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Guimarãesite & Roscherite

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SER111979

Guimarãesite & Roscherite

Type Locality

Description Tabs

Description
Locality: 
Taquaral, Itinga, Minas Gerais, Brazil
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.2 × 8.1 × 5.6 cm
Description

a clevelandite matrix full of yellow, rounded guimaraesite crystals and numerous brown balls of roscherite from Guimaraesite occurence, Piaui' valley, Taquaral

Mineral Data
What's on the rock

Guimarãesite

Formula: 
Ca2(Zn,Mg,Fe2+)5Be4(PO4)6(OH)4·6H2O
Strunz: 
8.DA.10
Hardness: 
0.0
Type Locality: 
Guimarãesite occurrence, Piauí valley, Taquaral, Itinga, Jequitinhonha valley, Minas Gerais, Brazil

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