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Stewartite & Bermanite

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CHP909653

Stewartite & Bermanite

Classic Locality

Description Tabs

Description
Locality: 
Vela Nordeste Quarry, Vela, Guarda, Guarda District, Portugal
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.8 × 3.2 × 2.5 cm
Description

specimen with some beautiful groups of yellow crystals of stewartite with associate orange-reddis crystalline bermanite on matrix.

c. 4176

Mineral Data
What's on the rock

Stewartite

Formula: 
Mn2+Fe3+2(PO4)2(OH)2·8H2O
Strunz: 
8.DC.30
Hardness: 
0.0
Streak: 
White
Type Locality: 
Stewart Mine (MS 6162; Stewart Lithia mine), Tourmaline Queen Mountain (Pala Mtn; Queen Mtn), Pala, Pala District, San Diego Co., California, USA

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

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