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Natrodufrénite & Strengite

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Natrodufrénite & Strengite

Rare Mineral

Description Tabs

Description
Locality: 
Sapucaia Mine, Sapucaia do Norte, Galiléia, Minas Gerais, Brazil
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2.9 × 2.1 cm
Description

Some vugs feature several green and dark green crystals of natrodufrenite with some light pink strengite balls

Mineral Data
What's on the rock

Natrodufrénite

Formula: 
NaFe2+Fe3+5(PO4)4(OH)6·2H2O
Strunz: 
8.DK.15
Hardness: 
3.5 - 4.5
Type Locality: 
Pluherlin Castle, Rochefort-en-Terre, Morbihan, Brittany, France

Strengite

Formula: 
FePO4·2H2O
Strunz: 
8.CD.10
Hardness: 
3.5 - 4.0
Streak: 
white
Type Locality: 
Eleonore Mine, Rodheim-Bieber, Wetzlar, Hesse, Germany