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Gismondine & Calcite

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SCH37053

Gismondine & Calcite

Description Tabs

Description
Locality: 
Campos de Calatrava, Ciudad Real, Castilla La Mancha, Spain
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.4 × 3.6 × 3 cm
Description

Groups of pseudotetragonal colorless gismondine pyramid-crystals in open vugs associated with nice groups of clear brown cauliflower-like calcite.

Mineral Data
What's on the rock

Gismondine

Synonym Of: 

Gismondine-Ca

Formula: 
CaAl2Si2O8·4H2O
Strunz: 
9.GC.05
Hardness: 
0.0
Group Parent: 
Zeolite Group

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White
schani

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