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Phosphosiderite Bermanite & Ferrisicklerite

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PDM1029822

Phosphosiderite Bermanite & Ferrisicklerite

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Description Tabs

Description
Locality: 
Buranga Pegmatite, Gatumba, Ngororero District, Western Province, Rwanda
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.7 × 4.6 × 3.3 cm
Weight: 
119.00gr
Description

Superb aggregate of blue phosphosiderite (labelled strengite) in a matrix of brownish red bermanite, black ferrisicklerite and greenish triphylite. This and similar specimens were analysed by XRD and SEM. The sample was collected in 1966 by Professor Albert Delvaux (1919-1998). Later in the stock of Jacques Deblandre, it comes with his stock label.

Combine specimens to reduce shipping costs!.

Mineral Data
What's on the rock

Phosphosiderite

Formula: 
FePO4·2H2O
Strunz: 
8.CD.05
Hardness: 
3.5 - 4.0
Type Locality: 
Kalterborn Mine, Eiserfeld, Siegerland, North Rhine-Westphalia, Germany

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

Ferrisicklerite

Formula: 
Li1-x(Fe3+xFe2+1-x)PO4
Strunz: 
8.AB.10
Hardness: 
4.0
Type Locality: 
Sidi Bou Othmane, El Kelaâ des Sraghna Province, Marrakech-Tensift-El Haouz Region, Morocco

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