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Strengite Stewartite & Bermanite

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BCK215861

Strengite Stewartite & Bermanite

Description Tabs

Description
Locality: 
Fletcher Mine, Groton, Grafton County, New Hampshire, United States of America
Size Range: 
Thumbnail (1-3cm)
Size: 
1.9 × 1 × 0.7 cm
Description

You are bidding on a small matrix specimen with rich balls and clusters of strengite with minor stewartite clusters and small druses of bermanite crystals. Classic material from this long defunct locality.

Mineral Data
What's on the rock

Strengite

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

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

Seller Information

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