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Chabazite-Ca On Clinochlore Var Delessite & Calcite

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Chabazite-Ca On Clinochlore Var Delessite & Calcite

ex collection Walter Wittig
Classic Locality

Description Tabs

Description
Locality: 
Juchem Quarry, Niederwörresbach, Herrstein, Birkenfeld, Rhineland-Palatinate, Germany
Size Range: 
Cabinet (10-18 cm)
Size: 
11.3 × 8.8 × 6 cm
Description

A very interesting and uncommon specimen and the finest of this kind I've seen so far. Tiny, lustrous waterclear chabazite-ca crystals on green delessite with calcite.
I had to adjust he green a little which changed the calcite to a reddish pink. In natutre it's just brownish-beige. But the green looks almost natural on my screen.
Some damage on the calcite. If I'd keep it I'd think of getting rid of some of the calcite.

Mineral Data
What's on the rock

Chabazite-Ca

Formula: 
(Ca,K2,Na2)2[Al2Si4O12]2·12H2O
Strunz: 
9.GD.10
Hardness: 
4.0 - 5.0
Streak: 
White
Type Locality: 
Colle del Lares, San Nicolò Valley, Buffaure Group, Fassa Valley, Trento Province, Trentino-Alto Adige, Italy

Clinochlore

Formula: 
(Mg,Fe2+)5Al(AlSi3O10)(OH)8
Strunz: 
9.EC.55
Crystal System: 
Monoclinic
Hardness: 
2.0 - 2.5
Type Locality: 
Brinton's Quarry, West Chester, Westtown Township, Chester Co., Pennsylvania, USA...

Delessite

Variety Of: 

Clinochlore

Formula: 
(Mg,Fe2+)5Al(AlSi3O10)(OH)8
Strunz: 
9.EC.55
Hardness: 
2.0 - 2.5
Formula: 
(Mg,Fe,Fe,Al)(Si,Al)4O10(O,OH)8
Hardness: 
0.0

Calcite

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

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