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Alumohydrocalcite & Nordstrandite

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FNW52044

Alumohydrocalcite & Nordstrandite

Description Tabs

Description
Locality: 
Rocabruna Mines, Bruguers, Gavà, Barcelona, Catalonia, Spain
Size Range: 
Thumbnail (1-3cm)
Size: 
2.6 × 2 × 2.1 cm
Description

This specimen features many aggregates of acicular crystal of alumohydrocalcite with some tiny spheres of nordstrandite.

Mineral Data
What's on the rock

Alumohydrocalcite

Formula: 
CaAl2(CO3)2(OH)4·4H2O
Strunz: 
5.DB.05
Hardness: 
2.5
Type Locality: 
Potekhina Village, Sorsk, Khakassia Republic (Khakassy Republic; Khakassiya Republic), Eastern-Siberian Region, Russia

Nordstrandite

Formula: 
Al(OH)3
Strunz: 
4.FE.10
Hardness: 
3.0
Type Locality: 
Gunong Kapor, Bau, Kuching, Sarawak, Borneo Island, Malaysia
Fine Minerals World
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