AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from South Dakota > Robertsite with Whitlockite |
DESCRIPTION: | No. 73913 |
Mineral: | Robertsite with Whitlockite |
Locality: | Tip Top Mine, Custer County, South Dakota (Type Locality for Robertsite) |
Description: | Dark brown-black robertsite microcrystals in hemispherical aggregates in a small cavity in dark red-brown crystallized phosphate matrix with yellow unidentified mineral (whiteite?) and a colorless pale-yellow whitlockite crystal in a small cavity. Ex. Willard Bill L. Roberts (1923-1987), author Mineralogy of the Black Hills (mineral namesake) |
Overall Size: | 16x11x9 mm |
Crystals: | micro |
Archived: | For reference only |
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