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Roscherite & Ernstite

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SER505946

Roscherite & Ernstite

Rare Mineral

Description Tabs

Description
Locality: 
Ponte do Piauí Claim, Piauí Valley, Taquaral, Minas Gerais, Brazil
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.9 × 3.5 × 0.8 cm
Description

A rich specimen featuring brwon tufts of roscherite crystals on brown ernstite and white quartz crystals

Mineral Data
What's on the rock

Roscherite

Formula: 
Ca2Mn2+5Be4(PO4)6(OH)4·6H2O
Strunz: 
8.DA.10
Crystal System: 
Monoclinic Tabular crystals or platy aggregates
Hardness: 
4.5 - 0.0
Streak: 
White
Type Locality: 
Greifenstein Rocks, Ehrenfriedersdorf, Erzgebirge, Saxony, Germany

Ernstite

Formula: 
(Mn2+,Fe3+)Al(PO4)(OH,O)2·H2O
Strunz: 
8.DD.20
Hardness: 
3.0 - 3.5
Type Locality: 
Davib East Farm 61 (Davib Ost Farm), Karibib District, Erongo Region, Namibia