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86-455: The Beneful brand of dog food was introduced to the market in 2001. It was marketed on the basis of nutrition and appearance; it resembled stew and contained beef pieces. According to a company spokesperson, the term "Beneful" means "full of goodness". A $ 34-million Beneful television advertising campaign that aired that year was the largest in Nestle Purina's history. By the end of 2006, Beneful

172-513: A class action lawsuit was filed in the US District Court for Northern California against Nestle Purina Petcare alleging that the propylene glycol and mycotoxins contained in its Beneful dog food brand were toxins capable of poisoning and even killing pets. According to Purina, the company uses food-grade versions of the ingredients that are approved by the Food and Drug Administration (FDA) and

258-399: A fault . Water often lubricates faults, filling in fractures and jogs. About 10 kilometres (6.2 mi) below the surface, under very high temperatures and pressures, the water carries high concentrations of carbon dioxide, silica, and gold. During an earthquake, the fault jog suddenly opens wider. The water inside the void instantly vaporizes, flashing to steam and forcing silica, which forms

344-434: A solid solution series with the native element silver (as in electrum ), naturally alloyed with other metals like copper and palladium , and mineral inclusions such as within pyrite . Less commonly, it occurs in minerals as gold compounds, often with tellurium ( gold tellurides ). Gold is resistant to most acids, though it does dissolve in aqua regia (a mixture of nitric acid and hydrochloric acid ), forming

430-483: A dilute solution of gold(III) chloride or chlorauric acid . Unlike sulfur, phosphorus reacts directly with gold at elevated temperatures to produce gold phosphide (Au 2 P 3 ). Gold readily dissolves in mercury at room temperature to form an amalgam , and forms alloys with many other metals at higher temperatures. These alloys can be produced to modify the hardness and other metallurgical properties, to control melting point or to create exotic colors. Gold

516-572: A gold-from-seawater swindle in the United States in the 1890s, as did an English fraudster in the early 1900s. Fritz Haber did research on the extraction of gold from sea water in an effort to help pay Germany 's reparations following World War I . Based on the published values of 2 to 64 ppb of gold in seawater, a commercially successful extraction seemed possible. After analysis of 4,000 water samples yielding an average of 0.004 ppb, it became clear that extraction would not be possible, and he ended

602-830: A golden hue to metallic caesium . Common colored gold alloys include the distinctive eighteen-karat rose gold created by the addition of copper. Alloys containing palladium or nickel are also important in commercial jewelry as these produce white gold alloys. Fourteen-karat gold-copper alloy is nearly identical in color to certain bronze alloys, and both may be used to produce police and other badges . Fourteen- and eighteen-karat gold alloys with silver alone appear greenish-yellow and are referred to as green gold . Blue gold can be made by alloying with iron , and purple gold can be made by alloying with aluminium . Less commonly, addition of manganese , indium , and other elements can produce more unusual colors of gold for various applications. Colloidal gold , used by electron-microscopists,

688-544: A high-tech office park. The new office park was to mirror one built in 1970 in nearby Peachtree Corners , known as Technology Park/Atlanta. Spotting tiny Johns Creek on an old map, they named their mixed-use, master-planned community "Technology Park/Johns Creek". This is the first reference to Johns Creek as a place. The area grew over the years to become the home of 200 companies – many of them Fortune 500 firms – with nearly 11,000 people spread over 6,000,000 square feet (560,000 m ) of office, retail and industrial space. With

774-552: A large alluvial deposit. The mines at Roşia Montană in Transylvania were also very large, and until very recently, still mined by opencast methods. They also exploited smaller deposits in Britain , such as placer and hard-rock deposits at Dolaucothi . The various methods they used are well described by Pliny the Elder in his encyclopedia Naturalis Historia written towards the end of

860-501: A long-term strength and identity in healthcare innovation and wellness. The resolution passed a year later. Since then, the city has had over 700 companies and 1400 professionals in lifesciences as well as 450 companies and 13,000 jobs in healthcare, including recently Boston Scientific move, build, or work there. In 2022, the group was renamed Johns Creek Vitality. Johns Creek is located in northeastern Fulton County. The elevation ranges from 880 feet (270 m) above sea level along

946-462: A novel type of metal-halide perovskite material consisting of Au and Au cations in its crystal structure has been found. It has been shown to be unexpectedly stable at normal conditions. Gold pentafluoride , along with its derivative anion, AuF − 6 , and its difluorine complex , gold heptafluoride , is the sole example of gold(V), the highest verified oxidation state. Some gold compounds exhibit aurophilic bonding , which describes

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1032-488: A private residence in Johns Creek – was an overnight stop-over for Jackson. Much later, the home was also visited by famed humorist Will Rogers , the great, great-nephew of John Rogers. Johns Creek's name comes from John Rogers's son, Johnson K. Rogers. A local tributary was named after him, and the name "Johns Creek" eventually came to be the name of the area. In 1831, much of the land in the former Cherokee Nation north of

1118-591: A replica of a Creek Indian hut, an 1800s historic village, and wildlife in 46 acres (190,000 m ) of woodlands. Biking the 4-mile (6 km) Greenway along Georgia 141 is a popular pastime. The city has plans to develop and connect other pathways to the Greenway, which will tie in with other cities, adding several miles of trails. Atlanta-Fulton Public Library System operates the Northeast Spruill Oaks Library and Ocee Regional Library. Each April,

1204-401: A sheet of 1 square metre (11 sq ft), and an avoirdupois ounce into 28 square metres (300 sq ft). Gold leaf can be beaten thin enough to become semi-transparent. The transmitted light appears greenish-blue because gold strongly reflects yellow and red. Such semi-transparent sheets also strongly reflect infrared light, making them useful as infrared (radiant heat) shields in

1290-423: A soluble tetrachloroaurate anion . Gold is insoluble in nitric acid alone, which dissolves silver and base metals , a property long used to refine gold and confirm the presence of gold in metallic substances, giving rise to the term ' acid test '. Gold dissolves in alkaline solutions of cyanide , which are used in mining and electroplating . Gold also dissolves in mercury , forming amalgam alloys, and as

1376-517: A solution of Au(OH) 3 in concentrated H 2 SO 4 produces red crystals of gold(II) sulfate , Au 2 (SO 4 ) 2 . Originally thought to be a mixed-valence compound, it has been shown to contain Au 4+ 2 cations, analogous to the better-known mercury(I) ion, Hg 2+ 2 . A gold(II) complex, the tetraxenonogold(II) cation, which contains xenon as a ligand, occurs in [AuXe 4 ](Sb 2 F 11 ) 2 . In September 2023,

1462-470: Is Au with a half-life of 2.27 days. Gold's least stable isomer is Au with a half-life of only 7 ns. Au has three decay paths: β decay, isomeric transition , and alpha decay. No other isomer or isotope of gold has three decay paths. The possible production of gold from a more common element, such as lead , has long been a subject of human inquiry, and the ancient and medieval discipline of alchemy often focused on it; however,

1548-696: Is Au , which decays by proton emission with a half-life of 30 μs. Most of gold's radioisotopes with atomic masses below 197 decay by some combination of proton emission , α decay , and β decay . The exceptions are Au , which decays by electron capture, and Au , which decays most often by electron capture (93%) with a minor β decay path (7%). All of gold's radioisotopes with atomic masses above 197 decay by β decay. At least 32 nuclear isomers have also been characterized, ranging in atomic mass from 170 to 200. Within that range, only Au , Au , Au , Au , and Au do not have isomers. Gold's most stable isomer

1634-469: Is a bright , slightly orange-yellow, dense, soft, malleable , and ductile metal . Chemically, gold is a transition metal , a group 11 element , and one of the noble metals . It is one of the least reactive chemical elements, being the second-lowest in the reactivity series . It is solid under standard conditions . Gold often occurs in free elemental ( native state ), as nuggets or grains, in rocks , veins , and alluvial deposits . It occurs in

1720-648: Is also known, an example of a mixed-valence complex . Gold does not react with oxygen at any temperature and, up to 100 °C, is resistant to attack from ozone: Au + O 2 ⟶ ( no reaction ) {\displaystyle {\ce {Au + O2 ->}}({\text{no reaction}})} Au + O 3 → t < 100 ∘ C ( no reaction ) {\displaystyle {\ce {Au{}+O3->[{} \atop {t<100^{\circ }{\text{C}}}]}}({\text{no reaction}})} Some free halogens react to form

1806-520: Is also used in infrared shielding, the production of colored glass , gold leafing , and tooth restoration . Certain gold salts are still used as anti-inflammatory agents in medicine. Gold is the most malleable of all metals. It can be drawn into a wire of single-atom width, and then stretched considerably before it breaks. Such nanowires distort via the formation, reorientation, and migration of dislocations and crystal twins without noticeable hardening. A single gram of gold can be beaten into

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1892-427: Is always richer at the exposed surface of gold-bearing veins, owing to the oxidation of accompanying minerals followed by weathering; and by washing of the dust into streams and rivers, where it collects and can be welded by water action to form nuggets. Gold sometimes occurs combined with tellurium as the minerals calaverite , krennerite , nagyagite , petzite and sylvanite (see telluride minerals ), and as

1978-513: Is attributed to wind-blown dust or rivers. At 10 parts per quadrillion, the Earth's oceans would hold 15,000 tonnes of gold. These figures are three orders of magnitude less than reported in the literature prior to 1988, indicating contamination problems with the earlier data. A number of people have claimed to be able to economically recover gold from sea water , but they were either mistaken or acted in an intentional deception. Prescott Jernegan ran

2064-459: Is common in food items such as salad dressings and cake mix. According to the plaintiff, there were over 3,000 complaints from dog owners with pets showing symptoms consistent with mycotoxin poisoning, such as vomiting, diarrhea, weight loss and seizures. Veterinarians have said grieving pet owners often falsely attribute ambiguous, non-specific symptoms to food. Tests by the FDA found no contaminants in

2150-464: Is found in ores in rock formed from the Precambrian time onward. It most often occurs as a native metal , typically in a metal solid solution with silver (i.e. as a gold/silver alloy ). Such alloys usually have a silver content of 8–10%. Electrum is elemental gold with more than 20% silver, and is commonly known as white gold . Electrum's color runs from golden-silvery to silvery, dependent upon

2236-465: Is most often called the oldest since this treasure is the largest and most diverse. Gold artifacts probably made their first appearance in Ancient Egypt at the very beginning of the pre-dynastic period, at the end of the fifth millennium BC and the start of the fourth, and smelting was developed during the course of the 4th millennium; gold artifacts appear in the archeology of Lower Mesopotamia during

2322-649: Is not directly served by MARTA trains or buses. GRTA Xpress Route 408 connects Johns Creek with the Doraville MARTA station . In January 2018 significant plans were approved for the engineering phase to upgrade State Bridge Road and Pleasant Hill Road. There is community-wide support from the community in both neighboring Johns Creek and Duluth for the pedestrian river bridge for the project. It will serve to improve bike pedestrian safety, boost local economies by improving access to businesses, enhance connections with surrounding neighborhoods and improve traffic flow in

2408-528: Is now questioned. The gold-bearing Witwatersrand rocks were laid down between 700 and 950 million years before the Vredefort impact. These gold-bearing rocks had furthermore been covered by a thick layer of Ventersdorp lavas and the Transvaal Supergroup of rocks before the meteor struck, and thus the gold did not actually arrive in the asteroid/meteorite. What the Vredefort impact achieved, however,

2494-427: Is red if the particles are small; larger particles of colloidal gold are blue. Gold has only one stable isotope , Au , which is also its only naturally occurring isotope, so gold is both a mononuclidic and monoisotopic element . Thirty-six radioisotopes have been synthesized, ranging in atomic mass from 169 to 205. The most stable of these is Au with a half-life of 186.1 days. The least stable

2580-484: Is similarly unaffected by most bases. It does not react with aqueous , solid , or molten sodium or potassium hydroxide . It does however, react with sodium or potassium cyanide under alkaline conditions when oxygen is present to form soluble complexes. Common oxidation states of gold include +1 (gold(I) or aurous compounds) and +3 (gold(III) or auric compounds). Gold ions in solution are readily reduced and precipitated as metal by adding any other metal as

2666-585: Is the soluble form of gold encountered in mining. The binary gold halides , such as AuCl , form zigzag polymeric chains, again featuring linear coordination at Au. Most drugs based on gold are Au(I) derivatives. Au(III) (referred to as auric) is a common oxidation state, and is illustrated by gold(III) chloride , Au 2 Cl 6 . The gold atom centers in Au(III) complexes, like other d compounds, are typically square planar , with chemical bonds that have both covalent and ionic character. Gold(I,III) chloride

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2752-634: Is thought to have been delivered to Earth by asteroid impacts during the Late Heavy Bombardment , about 4 billion years ago. Gold which is reachable by humans has, in one case, been associated with a particular asteroid impact. The asteroid that formed Vredefort impact structure 2.020 billion years ago is often credited with seeding the Witwatersrand basin in South Africa with the richest gold deposits on earth. However, this scenario

2838-505: Is thought to have been produced in supernova nucleosynthesis , and from the collision of neutron stars , and to have been present in the dust from which the Solar System formed. Traditionally, gold in the universe is thought to have formed by the r-process (rapid neutron capture) in supernova nucleosynthesis , but more recently it has been suggested that gold and other elements heavier than iron may also be produced in quantity by

2924-416: Is unaffected by most acids. It does not react with hydrofluoric , hydrochloric , hydrobromic , hydriodic , sulfuric , or nitric acid . It does react with selenic acid , and is dissolved by aqua regia , a 1:3 mixture of nitric acid and hydrochloric acid . Nitric acid oxidizes the metal to +3 ions, but only in minute amounts, typically undetectable in the pure acid because of the chemical equilibrium of

3010-410: The 2010 U.S. census . In 2010, its population was 76,728; and the 2020 United States census numbered 82,453 people, 28,638 households, and 23,283 families residing in the city. Johns Creek's 2010 demographics showed an estimated $ 109,576 median household income, a $ 137,271 average household income and a $ 45,570 per capita income. According to the city's 2021 Annual Comprehensive Financial Report,

3096-555: The Atlanta Lawn Tennis Association (ALTA), one of the largest and oldest organized recreation leagues in the country. Johns Creek , which is bordered by 13.5 miles (21.7 km) of the Chattahoochee River, has multiple nearby spots where paddlers can put in or take out their boats. It has shoals and low-level rapids. It also offers prime trout fishing. Autrey Mill Nature Preserve and Heritage Center offers

3182-563: The Chattahoochee River to 1,180 feet (360 m) in the Ocee area along the Alpharetta border. Johns Creek is bounded to the south by the Chattahoochee River and Gwinnett County , and on the northeast by McGinnis Ferry Road and Forsyth County . It is bounded by Roswell to the west, Alpharetta to the northwest, Suwanee to the east, and Duluth , Berkeley Lake , and Peachtree Corners to

3268-645: The Chu (state) circulated the Ying Yuan , one kind of square gold coin. In Roman metallurgy , new methods for extracting gold on a large scale were developed by introducing hydraulic mining methods, especially in Hispania from 25 BC onwards and in Dacia from 106 AD onwards. One of their largest mines was at Las Medulas in León , where seven long aqueducts enabled them to sluice most of

3354-583: The Old Testament , starting with Genesis 2:11 (at Havilah ), the story of the golden calf , and many parts of the temple including the Menorah and the golden altar. In the New Testament , it is included with the gifts of the magi in the first chapters of Matthew. The Book of Revelation 21:21 describes the city of New Jerusalem as having streets "made of pure gold, clear as crystal". Exploitation of gold in

3440-641: The Varna Necropolis near Lake Varna and the Black Sea coast, thought to be the earliest "well-dated" finding of gold artifacts in history. Several prehistoric Bulgarian finds are considered no less old – the golden treasures of Hotnitsa, Durankulak , artifacts from the Kurgan settlement of Yunatsite near Pazardzhik , the golden treasure Sakar, as well as beads and gold jewelry found in the Kurgan settlement of Provadia – Solnitsata ("salt pit"). However, Varna gold

3526-470: The reducing agent . The added metal is oxidized and dissolves, allowing the gold to be displaced from solution and be recovered as a solid precipitate. Less common oxidation states of gold include −1, +2, and +5. The −1 oxidation state occurs in aurides, compounds containing the Au anion . Caesium auride (CsAu), for example, crystallizes in the caesium chloride motif; rubidium, potassium, and tetramethylammonium aurides are also known. Gold has

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3612-619: The Beneful Dream Dog Park Contest, in which dog park designs are submitted for renovations. In 2013, 1,000 dog park designs were submitted for the $ 500,000 renovation. The program has produced parks in Johns Creek, Georgia , Alabaster, Alabama , and Lancaster, Pennsylvania . Beneful exclusively produces food for dogs including dry food, wet or canned food, and various snacks. The Beneful Healthy Harvest product line, added in June 2005,

3698-647: The Chattahoochee River, will take into account the environmental impacts of each option, and will restore the working bike/pedestrian connection between Duluth and Johns Creek. This will allow access to the planned 133 acre parkland under development in Johns Creek, and will allow Fulton County residents access to Rogers Bridge Park , the Chattapoochee Dog Park, and the Western Gwinnett Bikeway currently under development by Gwinnett County. The Johns Creek Police Department launched April 27, 2008, and

3784-584: The Chattahoochee was combined into the massive Cherokee County . When Milton County was formed in 1858, the Johns Creek area was folded into it. In the 1930s, during the Great Depression , Milton County was dissolved and all of its land was then absorbed into Fulton County. The four main crossroad communities — Ocee, Newtown, Sheltonville and Warsaw — remained the social, educational and business centers of rural, unincorporated northeast Fulton County. For

3870-591: The City of Johns Creek becoming official December 1, 2006. Newtown Elementary School , built in 1929, is Johns Creek's only listing on the National Register of Historic Places . It was listed in August 2006, with location described as "near Alpharetta ", before Johns Creek's incorporation was completed. In 2017, an iHeartJC initiative has been growing to have the city's residential, business and innovation ecosystem develop

3956-555: The area. In addition, the upgrade will serve to ease inspection and maintenance of the bridge in the future. In March 2018, the Gwinnett County Commissioners approved the agreement with the Johns Creek City Council. Both sides have agreed to remove the sidewalks from the existing bridges in order to widen the roads. To improve safety for pedestrians, a new pedestrian bridge will be constructed on one side of

4042-536: The city hosts the annual Johns Creek International Festival . In 2017, over 23,000 visitors attended the event. It is one of the most culturally diverse cities in the state and nation, representing many countries and cultures from around the world. This free community event features restaurants and food trucks, vendors, international beer and wine garden, live music and dance performances, and fun kids’ activities. Public schools are operated by Fulton County Schools . Schools located in Johns Creek include: Johns Creek

4128-608: The community celebrates the city's incorporation with activities and a parade. The Fall Family Festival in September is a community get-together at Newtown Park. Arts on the Creek is a juried art show, and also has musical and stage performers. "The Taste of Johns Creek" is an annual food festival in the fall that features more than 40 local restaurants with proceeds supporting public school extracurricular activities. There are six golf facilities (five private, one public) in Johns Creek, including

4214-662: The community of Sheltonville (or Shakerag), was a ferry crossing site, with the McGinnis Ferry and Rogers Ferry carrying people and livestock across the river for a small fee. Further south, the Nesbit Ferry did the same near another crossroads community known as Newtown. In the 1820s, the discovery of gold in the foothills of northeast Georgia within the Cherokee Nation – approximately 45 miles (72 km) north of today's Johns Creek – led to America's second major Gold Rush ,

4300-1409: The corresponding gold halides. Gold is strongly attacked by fluorine at dull-red heat to form gold(III) fluoride AuF 3 . Powdered gold reacts with chlorine at 180 °C to form gold(III) chloride AuCl 3 . Gold reacts with bromine at 140 °C to form a combination of gold(III) bromide AuBr 3 and gold(I) bromide AuBr, but reacts very slowly with iodine to form gold(I) iodide AuI: 2 Au + 3 F 2 → Δ 2 AuF 3 {\displaystyle {\ce {2Au{}+3F2->[{} \atop \Delta ]2AuF3}}} 2 Au + 3 Cl 2 → Δ 2 AuCl 3 {\displaystyle {\ce {2Au{}+3Cl2->[{} \atop \Delta ]2AuCl3}}} 2 Au + 2 Br 2 → Δ AuBr 3 + AuBr {\displaystyle {\ce {2Au{}+2Br2->[{} \atop \Delta ]AuBr3{}+AuBr}}} 2 Au + I 2 → Δ 2 AuI {\displaystyle {\ce {2Au{}+I2->[{} \atop \Delta ]2AuI}}} Gold does not react with sulfur directly, but gold(III) sulfide can be made by passing hydrogen sulfide through

4386-424: The densest element, osmium , is 22.588 ± 0.015 g/cm . Whereas most metals are gray or silvery white, gold is slightly reddish-yellow. This color is determined by the frequency of plasma oscillations among the metal's valence electrons, in the ultraviolet range for most metals but in the visible range for gold due to relativistic effects affecting the orbitals around gold atoms. Similar effects impart

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4472-676: The early 19th century, the Johns Creek area was dotted with trading posts along the Chattahoochee River in what was then Cherokee territory. The Cherokee Nation at the time was a confederacy of agrarian villages led by a chief. After European settlement, the Cherokee developed an alphabet , and a legislature and judiciary system patterned after the American model. Some trading posts gradually became crossroads communities where pioneer families – Rogers, McGinnis, Findley, Buice, Cowart, Medlock and others – gathered to visit and sell their crops. By 1820,

4558-664: The early 4th millennium. As of 1990, gold artifacts found at the Wadi Qana cave cemetery of the 4th millennium BC in West Bank were the earliest from the Levant. Gold artifacts such as the golden hats and the Nebra disk appeared in Central Europe from the 2nd millennium BC Bronze Age . The oldest known map of a gold mine was drawn in the 19th Dynasty of Ancient Egypt (1320–1200 BC), whereas

4644-552: The eventual takeover of the Cherokee Nation by the U.S. government in 1830, and the subsequent forced exile (the " Trail of Tears ") of Cherokee Indians to Oklahoma and other areas of the American West. A few Cherokees remained, the most famous being Sarah Cordery (1785–1842), the half-blood Cherokee wife of pioneer John Rogers (1774–1851), and their 12 children. Rogers was a respected, influential plantation owner and colleague of President Andrew Jackson . Rogers's 1828 home – today,

4730-516: The fire department launched October 27, 2008. The police department was certified by the Georgia Association of Chiefs of Police and accredited by the Commission on Accreditation for Law Enforcement within two years of the department's formation. Gold Gold is a chemical element with the chemical symbol Au (from Latin aurum ) and atomic number 79. In its pure form, it

4816-574: The first written reference to gold was recorded in the 12th Dynasty around 1900 BC. Egyptian hieroglyphs from as early as 2600 BC describe gold, which King Tushratta of the Mitanni claimed was "more plentiful than dirt" in Egypt. Egypt and especially Nubia had the resources to make them major gold-producing areas for much of history. One of the earliest known maps, known as the Turin Papyrus Map , shows

4902-403: The gold acts simply as a solute, this is not a chemical reaction . A relatively rare element, gold is a precious metal that has been used for coinage , jewelry , and other works of art throughout recorded history . In the past, a gold standard was often implemented as a monetary policy . Gold coins ceased to be minted as a circulating currency in the 1930s, and the world gold standard

4988-563: The highest electron affinity of any metal, at 222.8 kJ/mol, making Au a stable species, analogous to the halides . Gold also has a –1 oxidation state in covalent complexes with the group 4 transition metals, such as in titanium tetraauride and the analogous zirconium and hafnium compounds. These chemicals are expected to form gold-bridged dimers in a manner similar to titanium(IV) hydride . Gold(II) compounds are usually diamagnetic with Au–Au bonds such as [ Au(CH 2 ) 2 P(C 6 H 5 ) 2 ] 2 Cl 2 . The evaporation of

5074-405: The jobs came houses and shopping centers, and the population increased to about 60,000. By 2000, a grassroots movement to incorporate the Johns Creek area into a city was slowly developing. Residents wanted more control over issues such as traffic, growth, development and quality of life. They also sought a level of service that was a challenge for the sprawling Fulton County to provide. Following

5160-542: The mineral quartz, and gold out of the fluids and onto nearby surfaces. The world's oceans contain gold. Measured concentrations of gold in the Atlantic and Northeast Pacific are 50–150 femtomol /L or 10–30 parts per quadrillion (about 10–30 g/km ). In general, gold concentrations for south Atlantic and central Pacific samples are the same (~50 femtomol/L) but less certain. Mediterranean deep waters contain slightly higher concentrations of gold (100–150 femtomol/L), which

5246-469: The nearby city of Sandy Springs ’ successful incorporation in 2005, a legislative campaign was started to incorporate the Johns Creek community. House Bill 1321 was passed by the state legislature, signed by Gov. Sonny Perdue in March 2006, and approved by the residents of northeast Fulton County in a July 18, 2006 voter referendum. In November 2006, the city's first elected officials were voted into office, with

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5332-444: The next 50 years, these communities helped bring a sense of identity to this largely undeveloped and underpopulated area, as the nearby cities of Roswell , Alpharetta , Duluth and Suwanee and adjoining Forsyth and Gwinnett counties continued to grow and develop. In 1981, a group of Georgia Institute of Technology graduates bought 1,700 acres (6.9 km ) of farmland and woods near McGinnis Ferry and Medlock Bridge Roads for

5418-411: The noble metals, it still forms many diverse compounds. The oxidation state of gold in its compounds ranges from −1 to +5, but Au(I) and Au(III) dominate its chemistry. Au(I), referred to as the aurous ion, is the most common oxidation state with soft ligands such as thioethers , thiolates , and organophosphines . Au(I) compounds are typically linear. A good example is Au(CN) − 2 , which

5504-563: The plan of a gold mine in Nubia together with indications of the local geology . The primitive working methods are described by both Strabo and Diodorus Siculus , and included fire-setting . Large mines were also present across the Red Sea in what is now Saudi Arabia . Gold is mentioned in the Amarna letters numbered 19 and 26 from around the 14th century BC. Gold is mentioned frequently in

5590-707: The poster promotion, in 2011, Beneful started airing television ads in Austria that included high pitch noises only dogs could hear to elicit a response from pets. Interactive billboards from Beneful were released in New York in May 2012, allowing people to play virtual fetch in a subway station. The dogs on the billboard can be customized and will follow a passerby to engage them. The billboards have also been installed in Chicago, Los Angeles, Atlanta and St. Louis. Beneful hosts an annual competition,

5676-456: The product. The lawsuit was later changed to a claim of false advertising rather than harm to pets, but eventually all claims against Nestlé Purina were dismissed by the court. Johns Creek, Georgia Johns Creek is a city in Fulton County, Georgia , United States. According to the 2020 census , the population was 82,453. The city is a northeastern suburb of Atlanta . In

5762-459: The project. The earliest recorded metal employed by humans appears to be gold, which can be found free or " native ". Small amounts of natural gold have been found in Spanish caves used during the late Paleolithic period, c.  40,000 BC . The oldest gold artifacts in the world are from Bulgaria and are dating back to the 5th millennium BC (4,600 BC to 4,200 BC), such as those found in

5848-632: The r-process in the collision of neutron stars . In both cases, satellite spectrometers at first only indirectly detected the resulting gold. However, in August 2017, the spectroscopic signatures of heavy elements, including gold, were observed by electromagnetic observatories in the GW170817 neutron star merger event, after gravitational wave detectors confirmed the event as a neutron star merger. Current astrophysical models suggest that this single neutron star merger event generated between 3 and 13 Earth masses of gold. This amount, along with estimations of

5934-620: The rare bismuthide maldonite ( Au 2 Bi ) and antimonide aurostibite ( AuSb 2 ). Gold also occurs in rare alloys with copper , lead , and mercury : the minerals auricupride ( Cu 3 Au ), novodneprite ( AuPb 3 ) and weishanite ( (Au,Ag) 3 Hg 2 ). A 2004 research paper suggests that microbes can sometimes play an important role in forming gold deposits, transporting and precipitating gold to form grains and nuggets that collect in alluvial deposits. A 2013 study has claimed water in faults vaporizes during an earthquake, depositing gold. When an earthquake strikes, it moves along

6020-420: The rate of occurrence of these neutron star merger events, suggests that such mergers may produce enough gold to account for most of the abundance of this element in the universe. Because the Earth was molten when it was formed , almost all of the gold present in the early Earth probably sank into the planetary core . Therefore, as hypothesized in one model, most of the gold in the Earth's crust and mantle

6106-935: The reaction. However, the ions are removed from the equilibrium by hydrochloric acid, forming AuCl − 4 ions, or chloroauric acid , thereby enabling further oxidation: 2 Au + 6 H 2 SeO 4 → 200 ∘ C Au 2 ( SeO 4 ) 3 + 3 H 2 SeO 3 + 3 H 2 O {\displaystyle {\ce {2Au{}+6H2SeO4->[{} \atop {200^{\circ }{\text{C}}}]Au2(SeO4)3{}+3H2SeO3{}+3H2O}}} Au + 4 HCl + HNO 3 ⟶ HAuCl 4 + NO ↑ + 2 H 2 O {\displaystyle {\ce {Au{}+4HCl{}+HNO3->HAuCl4{}+NO\uparrow +2H2O}}} Gold

6192-449: The renowned Atlanta Athletic Club , home of the 2011 PGA Championship and the 2014 U.S. Amateur . Other golf facilities include Country Club of the South, Rivermont Golf and Country Club, River Pines Golf, St. Ives Country Club, and The Standard Club. The Atlanta Athletic Club was the site of the inaugural Atlanta Tennis Championships in 2010. Johns Creek is home to thousands of members of

6278-464: The rest of the gold on Earth is thought to have been incorporated into the planet since its very beginning, as planetesimals formed the mantle . In 2017, an international group of scientists established that gold "came to the Earth's surface from the deepest regions of our planet", the mantle, as evidenced by their findings at Deseado Massif in the Argentinian Patagonia . On Earth, gold

6364-418: The river. A pedestrian underpass linking both sides of the wider road is being considered to further improve access and provide for a safer crossing of the road. The Rogers bridge project is another significant plan is to connect to Duluth via reconstructing a bike/pedestrian bridge across the Chattahoochee River. The engineers will determine whether to replace or rehabilitate the existing Rogers Bridge over

6450-474: The same result and showing that the isotopes of gold produced by it were all radioactive . In 1980, Glenn Seaborg transmuted several thousand atoms of bismuth into gold at the Lawrence Berkeley Laboratory. Gold can be manufactured in a nuclear reactor, but doing so is highly impractical and would cost far more than the value of the gold that is produced. Although gold is the most noble of

6536-486: The silver content. The more silver, the lower the specific gravity . Native gold occurs as very small to microscopic particles embedded in rock, often together with quartz or sulfide minerals such as " fool's gold ", which is a pyrite . These are called lode deposits. The metal in a native state is also found in the form of free flakes, grains or larger nuggets that have been eroded from rocks and end up in alluvial deposits called placer deposits . Such free gold

6622-446: The south-east corner of the Black Sea is said to date from the time of Midas , and this gold was important in the establishment of what is probably the world's earliest coinage in Lydia around 610 BC. The legend of the golden fleece dating from eighth century BCE may refer to the use of fleeces to trap gold dust from placer deposits in the ancient world. From the 6th or 5th century BC,

6708-423: The south. Downtown Atlanta is 27 miles (43 km) to the southwest. According to the U.S. Census Bureau , the city of Johns Creek has a total area of 31.3 square miles (81.0 km ), of which 30.7 square miles (79.6 km ) is land and 0.54 square miles (1.4 km ), or 1.76%, is water. Johns Creek has a humid subtropical climate ( Köppen climate classification Cfa ). Johns Creek first appeared in

6794-436: The tendency of gold ions to interact at distances that are too long to be a conventional Au–Au bond but shorter than van der Waals bonding . The interaction is estimated to be comparable in strength to that of a hydrogen bond . Well-defined cluster compounds are numerous. In some cases, gold has a fractional oxidation state. A representative example is the octahedral species {Au( P(C 6 H 5 ) 3 )} 2+ 6 . Gold

6880-596: The top employers in the city were: Johns Creek has metro Atlanta's only part-time, fully professional symphony orchestra, the Johns Creek Symphony Orchestra. Under the leadership of Music Director J. Wayne Baughman, the orchestra performs several times each year. The Johns Creek Arts Center offers classes and camps for aspiring artists in multiple media throughout the year. There also are several festivals year-round, such as Founders Week in December in which

6966-403: The transmutation of the chemical elements did not become possible until the understanding of nuclear physics in the 20th century. The first synthesis of gold was conducted by Japanese physicist Hantaro Nagaoka , who synthesized gold from mercury in 1924 by neutron bombardment. An American team, working without knowledge of Nagaoka's prior study, conducted the same experiment in 1941, achieving

7052-417: The visors of heat-resistant suits and in sun visors for spacesuits . Gold is a good conductor of heat and electricity . Gold has a density of 19.3 g/cm , almost identical to that of tungsten at 19.25 g/cm ; as such, tungsten has been used in the counterfeiting of gold bars , such as by plating a tungsten bar with gold. By comparison, the density of lead is 11.34 g/cm , and that of

7138-783: Was abandoned for a fiat currency system after the Nixon shock measures of 1971. In 2020, the world's largest gold producer was China, followed by Russia and Australia. As of 2020 , a total of around 201,296 tonnes of gold exist above ground. This is equal to a cube, with each side measuring roughly 21.7 meters (71 ft). The world's consumption of new gold produced is about 50% in jewelry, 40% in investments , and 10% in industry . Gold's high malleability, ductility, resistance to corrosion and most other chemical reactions, as well as conductivity of electricity have led to its continued use in corrosion-resistant electrical connectors in all types of computerized devices (its chief industrial use). Gold

7224-520: Was generating $ 300 million in revenues. In the same year the company invested $ 36 million to upgrade facilities in St. Joseph, Missouri to produce more wet food. In 2010, Beneful attempted to "humanize" its dog food and introduced IncrediBites, a food in stay-fresh packaging with a smaller kibble size. Beneful released a series of posters in Germany designed to attract dogs by releasing the smell of dog food. Following

7310-538: Was the company's first premium dry dog food to feature soy as the main protein source rather than meat. Beneful Prepared Meals were introduced in March 2006. With eight flavors, the line featured resealable, multipurpose packaging where the containers also serve as a dog food bowl. Beneful's packaging was recognized with the Pack Expo Selects Award at the Showcase of Packaging Innovations in 2007. In February 2015,

7396-605: Was to distort the Witwatersrand basin in such a way that the gold-bearing rocks were brought to the present erosion surface in Johannesburg , on the Witwatersrand , just inside the rim of the original 300 km (190 mi) diameter crater caused by the meteor strike. The discovery of the deposit in 1886 launched the Witwatersrand Gold Rush . Some 22% of all the gold that is ascertained to exist today on Earth has been extracted from these Witwatersrand rocks. Much of

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