Formula :
CaCo[OH/AsO4]
System: orthorhombic Hardness:4½ Rarity:very rare
Strunz id:VII/B.26-30 -
PHOSPHATES, ARSENATES and VANADATES
Name origin: Named by Ernest H. Nickel and William D. Birch in 1988 after Austin Flint Rogers (1877-1957), American mineralogist at Stanford University, and in allusion to the dominance of Co in the composition.
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