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Colquiriite Serrabrancaite Bermanite & Phosphosiderite

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SER511804

Colquiriite Serrabrancaite Bermanite & Phosphosiderite

Rare Mineral

Description Tabs

Description
Locality: 
Serra Branca Pegmatite, Pedra Lavrada, Borborema Province, Paraiba, Brazil
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3.5 × 2.1 cm
Description

In accord with prof. R. Wegner, that I knew this year in Campina Grande University (Paraiba), this mineral in Serra Branca pegmatite can offer prismatic, double terminated, colourless crystals. This specimen is one of the best I found in the dumps and features several colourless colquiriite crystals (photo1, 2, 3 and 7) on brown tufts of serrabrancaite, tiny red bermanite and wonderful purple phosphosiderite

Mineral Data
What's on the rock

Colquiriite

Formula: 
CaLi[AlF6]
Strunz: 
3.CB.20
Hardness: 
0.0
Type Locality: 
Colquiri mine, Colquiri, Inquisivi Province, La Paz Department, Bolivia

Serrabrancaite

Formula: 
MnPO4·H2O
Strunz: 
8.CB.05
Crystal System: 
Monoclinic
Hardness: 
3.5
Type Locality: 
Serra Branca pegmatite, Pedra Lavrada, Borborema mineral province, Paraíba, Brazil

Bermanite

Formula: 
Mn2+Mn3+2(PO4)2(OH)2·4H2O
Strunz: 
8.DC.20
Crystal System: 
Monoclinic
Hardness: 
3.5
Type Locality: 
7U7 Ranch (7-U-7 Ranch), Bagdad Mine area, Hillside, Eureka District, Yavapai Co., Arizona, USA

Phosphosiderite

Formula: 
FePO4·2H2O
Strunz: 
8.CD.05
Hardness: 
3.5 - 4.0
Type Locality: 
Kalterborn Mine, Eiserfeld, Siegerland, North Rhine-Westphalia, Germany