Sharp, beautiful golden-amber, crystal of Powellite 1,4 cm tall aesthetically perched on matrix with clacite in association.
Formula :
Ca[MoO4]
System: tetragonal Hardness:3½-4 Rarity:rare
Strunz id:VI/G.1-10 -
SULFATES, CHROMATES, MOLYBDATES and TUNGSTATES
Name origin: Named after the American geologist and explorer, John Wesley Powell (1834-1902), second Director of the U.S. Geological Survey.
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 Specimen weight:48 gr.
 Crystal size:mm. 14
 Overall size: 50mm x 40 mm x 25 mm
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