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Waylandite & Rooseveltite

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CHP818936

Waylandite & Rooseveltite

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Description
Locality: 
Serra de Santa Justa #2 Mine, Arcos, Ponte de Lima, Viana do Castelo District, Portugal
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.9 × 1.7 cm
Description

specimen with white or yellow crystalline aggregate of waylandite with associate white balls of rare rooseveltite. ex collection Pedro Alves.

c. 680

 

Mineral Data
What's on the rock

Waylandite

Formula: 
BiAl3(PO4)2(OH)6
Strunz: 
8.BL.13
Hardness: 
4.0 - 5.0
Colour: 
White
Type Locality: 
Wampewo Hill, Busiiro Co. (Bushiro Co.), Wakiso District, Uganda

Rooseveltite

Formula: 
Bi(AsO4)
Strunz: 
8.AD.50
Hardness: 
4.0 - 4.5
Type Locality: 
Santiaguillo, Macha area, Chayanta Province, Potosí Department, Bolivia

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