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Tourmaline & Herderite

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MGR788891

Tourmaline & Herderite

Description Tabs

Description
Locality: 
Pederneira Mine, São José da Safira, Minas Gerais, Brazil
Class: 
Single Crystal
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.4 × 1.1 × 1 cm
Description

I showd several specimen of this very rare discovery "the purple pocket" at Pederneira mine! Finally the very best - 94mm tall with additional albite at the upper quarter. Further you can see a sharp, thin green zoning at the bottom. A Hederite crystal attached to the top makes it evene more special.

Mineral Data
What's on the rock

Tourmaline

Formula: 
A(D3)G6(T6O18)(BO3)3X3Z
Crystal System: 
Trigonal
Hardness: 
7

Herderite

Formula: 
CaBePO4(F,OH)
Strunz: 
8.BA.10
Crystal System: 
Monoclinic
Hardness: 
5.0 - 5.5
Type Locality: 
Sauberg Mine, Ehrenfriedersdorf, Erzgebirge, Saxony, Germany