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Bermanite & Stewartite

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PAV971620

Bermanite & Stewartite

Classic Locality

Description Tabs

Description
Locality: 
Pedra da Moura Mine, São Lourenço de Touvedo, Ponte da Barca, Viana do Castelo District, Portugal
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
1.3 × 2.3 × 1.7 cm
Description

Very rich and nice bermanite specimen from a little know and defunct locality.

Hundreds of perfect deep red crystals associated to stewartite.

Collected: 
2006
Boxed with Label
Mineral Data
What's on the rock

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

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