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Hureaulite & Vivianite

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SER189904

Hureaulite & Vivianite

Description Tabs

Description
Locality: 
Cigana (Jocão), Galiléia, Minas Gerais, Brazil
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 4 × 4 cm
Description

Good specimen that shows bright pink hureaulite crystals and some blue vivianite

Mineral Data
What's on the rock

Hureaulite

Formula: 
(Mn,Fe)5(PO4)2(HPO4)2·4H2O
Strunz: 
8.CB.10
Hardness: 
5.0
Type Locality: 
Les Hureaux, Saint-Sylvestre, Haute-Vienne, Limousin, France

Vivianite

Formula: 
Fe2+3(PO4)2·8H2O
Strunz: 
8.CE.40
Crystal System: 
Monoclinic
Hardness: 
1.5 - 2.0
Type Locality: 
Wheal Kind (Wheal Kine), West Wheal Kitty group, St Agnes, St Agnes District, Cornwall, England, UK