Phosphosiderite & Strengite

Bull Moose mine, Custer County, South Dakota, USA

1431

Two cavities in a large thumbnail specimen host a mix of rare phosphates with red and salmon pink Phosphosiderite (Metastrengite) and purple Strengite.  Part of the Bloch collection, with an Si & Ann Frazier private collection label. The label gives the collector as Bill Roberts whom the mineral Robertsite was named after.

Formulas: Phosphosiderite & Strengite FePO4 . 2H2O (Dimorphs)

Status: Sold

Dimensions: 30x18x28mm

Size: Thumbnail (T)

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