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Formula: CaV5+2O6.2H2O
Vanadate
Crystal System: Triclinic
Specific gravity: 2.8 calculated
Hardness: 1 to 2
Colour: Very light yellow to pale grenish yellow, colourless to pale yellow in transmitted light
Solubility: Soluble in water
Environments
Metarossite is a secondary mineral resulting from the
dehydration of rossite (Mindat).
Localities
At the type locality, the Arrowhead tunnel, Bull Pen Canyon, San Miguel County, Colorado, USA, metarossite
forms small yellow veins in a light grey and friable carnotite-bearing
sandstone; it is coarse, platy in habit, but soft and friable.
Occasionally within the centre of masses of metarossite one can find small glassy kernels of
rossite. Associated minerals include
rossite, carnotite and
gypsum
(Proceedings of the U.S. National Museum: 72: 1-12, HOM).
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