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Clinochlore Var Delessite On Amethyst

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CLB134482

Clinochlore Var Delessite On Amethyst

Classic Locality

Description Tabs

Description
Locality: 
Juchem Quarry, Niederwörresbach, Herrstein, Birkenfeld, Rhineland-Palatinate, Germany
Size Range: 
Museum (18cm plus)
Size: 
19.5 × 11.5 × 6 cm
Description

Delessite is not that rare at the Juchem quarry, but this specimen is exceptionally big and rich. A piece of a giant amethyst druse with really a lot of the botryoidal, green clinochlore variety.

Mineral Data
What's on the rock

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

Amethyst

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Formula: 
SiO2
Hardness: 
0.0
Colour: 
Purple

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