Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Guimarãesite & Apatite

Views:
Watches:
SER808828

Guimarãesite & Apatite

Type Locality

Description Tabs

Description
Locality: 
Piauí Valley, Taquaral, Itinga, Minas Gerais, Brazil
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.2 × 6.5 × 5.5 cm
Description

a large specimen featuring thousands yellow platy guimaraesite crystals and white balls of apatite ; the specimen is crystallized all around and allows many micro specimen by its reduction

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

Apatite

Synonym Of: 

Chlorapatite

Formula: 
Ca5(PO4)3Cl
Strunz: 
8.BN.05
Hardness: 
5.0

Fluorapatite

Formula: 
Ca2Ca3(PO4)3F
Strunz: 
8.BN.05
Hardness: 
5.0

Hydroxylapatite

Formula: 
Ca5(PO4)3(OH)
Strunz: 
8.BN.05
Hardness: 
5.0
Crystal System: 
Hexagonal
Hardness: 
5