Coconinoite
Encyclopedia
Coconinoite is a uranium ore that was discovered in Coconino County, Arizona
. It is a phosphate mineral; or uranyal phosphate mineral along with other subclass uranium U6+ minerals like blatonite, boltwoodite
, metazeunerite
and rutherfordine
.
is Fe2Al2(UO2)2(PO4)4(SO4)4(OH)2·20H2O.
The chemical formula was derived from the spectrographic analysis.
and a pale creamy yellow color. The mineral occurs as microscopic crystals, the largest found is 6 by 20 micrometres. It is a radioactive mineral, but not fluorescent. Upon heating for dehydration it is found the that mineral losses some of its SO2 at 600 to 800 °C.
, jarosite
, limonite
, quartz
, clay minerals and coal
ized wood at the Jomac mine,
Utah.
Coconinite was first described in 1966 for occurrences in the Huskon Mines, Cameron
, Cameron District and the Sun Valley Mine, Vermillion Cliffs District, Coconino County, Arizona
. It was named for Coconino County.
Coconino County, Arizona
-2010:Whereas according to the 2010 U.S. Census Bureau:*61.7% White*1.2% Black*27.3% Native American*1.4% Asian*0.1% Native Hawaiian or Pacific Islander*3.1% Two or more races*5.2% Other races*13.5% Hispanic or Latino -2000:...
. It is a phosphate mineral; or uranyal phosphate mineral along with other subclass uranium U6+ minerals like blatonite, boltwoodite
Boltwoodite
Boltwoodite is a hydrated potassium uranyl silicate mineral with formula HK·1.5. It is formed from the oxidation and alteration of primary uranium ores. It takes the form of a crust on some sandstones that bear uranium...
, metazeunerite
Metazeunerite
Metazeunerite is an arsenate mineral with a chemical formula of Cu22·8H2O. The origin of this mineral comes from the dehydration process that metazeunerite must go through, and it’s association with zeunerite. As dehydration occurs, zeunerite loses an electron and is then metamorphosed into...
and rutherfordine
Rutherfordine
Rutherfordine is a mineral containing almost pure uranyl carbonate. It crystallizes in the orthorhombic system in translucent lathlike, elongated, commonly radiating in fibrous, and in pulverulent, earthy to very fine-grained dense masses. It has a specific gravity of 5.7 and exhibits two...
.
Composition
The chemical formulaChemical formula
A chemical formula or molecular formula is a way of expressing information about the atoms that constitute a particular chemical compound....
is Fe2Al2(UO2)2(PO4)4(SO4)4(OH)2·20H2O.
The chemical formula was derived from the spectrographic analysis.
Physical properties
The mineral has a white streakStreak (mineralogy)
The streak of a mineral is the color of the powder produced when it is dragged across an unweathered surface. Unlike the apparent color of a mineral, which for most minerals can vary considerably, the trail of finely ground powder generally has a more consistent characteristic color, and is thus...
and a pale creamy yellow color. The mineral occurs as microscopic crystals, the largest found is 6 by 20 micrometres. It is a radioactive mineral, but not fluorescent. Upon heating for dehydration it is found the that mineral losses some of its SO2 at 600 to 800 °C.
Geologic occurrence
It occurs in the oxidized zone of vanadium-poor Colorado Plateau-type uranium deposits of Utah and Arizona. It occurs in association with gypsumGypsum
Gypsum is a very soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O. It is found in alabaster, a decorative stone used in Ancient Egypt. It is the second softest mineral on the Mohs Hardness Scale...
, jarosite
Jarosite
Jarosite is a basic hydrous sulfate of potassium and iron with a chemical formula of KFe3+362. This sulfate mineral is formed in ore deposits by the oxidation of iron sulfides...
, limonite
Limonite
Limonite is an ore consisting in a mixture of hydrated iron oxide-hydroxide of varying composition. The generic formula is frequently written as FeO·nH2O, although this is not entirely accurate as limonite often contains a varying amount of oxide compared to hydroxide.Together with hematite, it has...
, quartz
Quartz
Quartz is the second-most-abundant mineral in the Earth's continental crust, after feldspar. It is made up of a continuous framework of SiO4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall formula SiO2. There are many different varieties of quartz,...
, clay minerals and coal
Coal
Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure...
ized wood at the Jomac mine,
Utah.
Coconinite was first described in 1966 for occurrences in the Huskon Mines, Cameron
Cameron, Arizona
Cameron is a census-designated place in Coconino County, Arizona, United States. The population was 978 at the 2000 census. Most of the town's economy is tourist food and craft stalls, restaurants, and other services for north-south traffic from Flagstaff and Page...
, Cameron District and the Sun Valley Mine, Vermillion Cliffs District, Coconino County, Arizona
Coconino County, Arizona
-2010:Whereas according to the 2010 U.S. Census Bureau:*61.7% White*1.2% Black*27.3% Native American*1.4% Asian*0.1% Native Hawaiian or Pacific Islander*3.1% Two or more races*5.2% Other races*13.5% Hispanic or Latino -2000:...
. It was named for Coconino County.