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Powellite is a calcium molybdate mineral with formula CaMoO 4 . Powellite crystallizes with tetragonal – dipyramidal crystal structure as transparent adamantine blue, greenish-brown, yellow-to-grey typically anhedral forms. It exhibits distinct cleavage , and has a brittle-to-conchoidal fracture. It has a Mohs hardness of 3.5 to 4 and a specific gravity of 4.25. It forms a solid solution series with scheelite (calcium tungstate, CaWO 4 ). It has refractive index values of n ω =1.974 and n ε =1.984.

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13-670: Powellite was first described by William Harlow Melville in 1891 for an occurrence in the Peacock Mine, Adams County, Idaho , and named for American explorer and geologist, John Wesley Powell (1834–1902). It occurs in hydrothermal ore deposits of molybdenum within the near-surface oxidized zones. It also appears as a rare mineral phase in pegmatite , tactite and basalt . Minerals found in association with powellite include molybdenite , ferrimolybdite , stilbite , laumontite and apophyllite . [REDACTED] Media related to Powellite at Wikimedia Commons This article about

26-469: A household in the county was $ 28,423, and the median income for a family was $ 32,335. Males had a median income of $ 29,097 versus $ 14,408 for females. The per capita income for the county was $ 14,908. About 11.70% of families and 15.10% of the population were below the poverty line , including 16.90% of those under age 18 and 11.70% of those age 65 or over. As of the 2010 United States Census , there were 3,976 people, 1,748 households, and 1,185 families in

39-499: A specific mineral or mineraloid is a stub . You can help Misplaced Pages by expanding it . Adams County, Idaho Adams County is a rural county in the state of Idaho . As of the 2020 census, the county had a population of 4,379, making it the sixth-least populous county in Idaho. The county seat and largest city is Council . Established in 1911, the county was named for second U.S. President John Adams . Adams County

52-610: Is home to the Brundage Mountain ski area , northeast of New Meadows , and the Little Ski Hill , just west of McCall . The west boundary line of Adams County abuts the east line of the state of Oregon , across the Snake River . According to the U.S. Census Bureau , the county has a total area of 1,370 square miles (3,500 km ), of which 1,363 square miles (3,530 km ) is land and 6.7 square miles (17 km ) (0.5%)

65-447: Is often difficult, since methodologies, definitions and data quality can vary greatly. Since the 1990s, the OECD has conducted regular surveys among its 38 member countries using a standardized methodology and set of questions. Per capita income is often used to measure a sector's average income and compare the wealth of different populations. Per capita income is also often used to measure

78-519: Is water. As of the 2000 United States Census , there were 3,476 people, 1,421 households, and 1,031 families in the county. The population density was 2.5 people per square mile (0.97 people/km ). There were 1,982 housing units at an average density of 2 per square mile (0.77/km ). The racial makeup of the county was 96.29% White , 1.41% Native American , 0.14% Asian , 0.06% Black or African American , 0.03% Pacific Islander , 0.92% from other races , and 1.15% from two or more races. 1.55% of

91-489: The average income earned per person in a given area (city, region, country, etc.) in a specified year. In many countries, per capita income is determined using regular population surveys, such as the American Community Survey . This allows the calculation of per capita income for both the country as a whole and specific regions or demographic groups. However, comparing per capita income across different countries

104-416: The county. The population density was 2.9 inhabitants per square mile (1.1/km ). There were 2,636 housing units at an average density of 1.9 per square mile (0.73/km ). The racial makeup of the county was 96.1% white, 1.0% American Indian, 0.4% Asian, 0.1% Pacific islander, 0.1% black or African American, 0.7% from other races, and 1.7% from two or more races. Those of Hispanic or Latino origin made up 2.4% of

117-530: The following table is based on the 2010 census of Adams County. † county seat School districts include: Residents are in the area (but not the taxation zone) for College of Western Idaho . The county is served by the Southwest Idaho Health District. 44°54′N 116°27′W  /  44.90°N 116.45°W  / 44.90; -116.45 Per capita income Per capita income ( PCI ) or average income measures

130-468: The population were Hispanic or Latino of any race. 25.6% were of American , 17.9% German , 11.8% English and 7.0% Irish ancestry. There were 1,421 households, out of which 28.00% had children under the age of 18 living with them, 63.30% were married couples living together, 5.70% had a female householder with no husband present, and 27.40% were non-families. 23.20% of all households were made up of individuals, and 9.90% had someone living alone who

143-420: The population. In terms of ancestry, 26.3% were German , 18.0% were English , 14.6% were Irish , and 4.9% were American . Of the 1,748 households, 22.3% had children under the age of 18 living with them, 58.6% were married couples living together, 5.8% had a female householder with no husband present, 32.2% were non-families, and 26.8% of all households were made up of individuals. The average household size

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156-487: Was 2.26 and the average family size was 2.70. The median age was 50.0 years. The median income for a household in the county was $ 36,004 and the median income for a family was $ 45,590. Males had a median income of $ 31,050 versus $ 26,413 for females. The per capita income for the county was $ 22,730. About 8.8% of families and 12.4% of the population were below the poverty line , including 13.5% of those under age 18 and 13.5% of those age 65 or over. The population ranking of

169-441: Was 65 years of age or older. The average household size was 2.42 and the average family size was 2.83. The county population contained 23.90% under the age of 18, 4.60% from 18 to 24, 22.60% from 25 to 44, 32.70% from 45 to 64, and 16.10% who were 65 years of age or older. The median age was 44 years. For every 100 females, there were 105.40 males. For every 100 females age 18 and over, there were 102.10 males. The median income for

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