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Alumohydrocalcite

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PDM603545

Alumohydrocalcite

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Description
Locality: 
Montcada Hill Quarry , Montcada i Reixac, Vallès Occidental, Barcelona, Catalonia, Spain
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 5 × 1.8 cm
Description

Rare specimen of white fibrous crystals of alumohydrocalcite from Montcada (Barcelona), a classic locality in Spain. These secondary species have been intensively studied and analysed.

Ex. M. Moreno specimen.

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

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