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Fluorapatite Todorokite Bertrandite & Elbaite

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DVE88162

Fluorapatite Todorokite Bertrandite & Elbaite

Ex-David J. Eicher Collection

Description Tabs

Description
Locality: 
Golconda Pegmatite, Governador Valadares, Minas Gerais, Brazil
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 2.7 × 2.4 cm
Description

A complex specimen from Minas Gerais with a veritable cocktail of mineral species. The highlight comes from beautiful, gemmy lilac purple apatite crystals to 0.6 cm. Also present are tiny, sparkling bertrandite crystals, white albite, and small associated crystals of elbaite and todorokite.

Quite a combination!

Mineral Data
What's on the rock

Fluorapatite

Formula: 
Ca2Ca3(PO4)3F
Strunz: 
8.BN.05
Crystal System: 
Hexagonal
Hardness: 
5.0
Streak: 
White
Type Locality: 
Sauberg Mine, Ehrenfriedersdorf, Erzgebirge, Saxony, Germany

Todorokite

Formula: 
(Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)6O12·3H2O
Strunz: 
4.DK.10
Hardness: 
1.5
Type Locality: 
Todoroki mine, Yoichi, Shiribeshi Province, Hokkaido, Japan

Bertrandite

Formula: 
Be4(Si2O7)(OH)2
Strunz: 
9.BD.05
Crystal System: 
Orthorhombic
Hardness: 
6.0 - 7.0
Type Locality: 
Petit-Port, Nantes, Loire-Atlantique, Pays de Loire, France

Elbaite

Formula: 
Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Strunz: 
9.CK.05
Hardness: 
7.5
Streak: 
White
Type Locality: 
Fonte del Prete, San Piero in Campo, Campo nell'Elba, Elba Island, Livorno Province, Tuscany, Italy...
David J. Eicher

Seller Information

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