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Hureaulite Landesite

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SER727278

Hureaulite Landesite

Description Tabs

Description
Locality: 
Cigana (Jocão), Galiléia, Minas Gerais, Brazil
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 6.5 × 2.5 cm
Description

a large matrix specimen featuring a carpet of alterated correianevesite (landesite?) that hosts several also double terminated hureaulite crystals

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

Landesite

Formula: 
Mn2+3-xFe3+x(PO4)2(OH)x·(3-x)H2O
Strunz: 
8.CC.05
Hardness: 
3.0 - 3.5
Type Locality: 
Berry-Havey Quarry (Havey Quarry; Berry Quarry), Poland, Androscoggin Co., Maine, USA