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Jahnsite-(Ca Mn Mg) with Mitridatite


Jahnsite-(Ca Mn Mg) with Mitridatite

6 x 3.5 x 0.6 cm - Sm Cabinet 
CaMn2+Mg2Fe3+2(PO4)4(OH)2·8H2O (RRUFF)
Tip Top mine, Custer Co., South Dakota, United States
phosphate , pegmatite mineral

Tiny 0.5 to 1mm clove brown, tabular and striated crystals of Jahsite-(CaMnMg). This is the first Jahnsite discovered. Subsequently there have been several variations described all due to cation substitution. The brown balls are Mitridatite. The matrix is Quartz. Coverage on both sides.  These are well-defined and fabulous crystals.

Type Locality

Dr. Buford L. Nichols Collection
Special Info
Type Locality

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