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Smoky Quartz With Stilbite & Feldspar

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BMM838495

Smoky Quartz With Stilbite & Feldspar

Description Tabs

Description
Locality: 
Strzegom, Strzegom-Sobótka Massif, Lower Silesian Voivodeship, Poland
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.2 × 5 × 3 cm
Description

Dark shiny and transparent smoky quartzes in combination with shiny golden stilbite and high-gloss feldspar crystals. All three minerals are grown in good balance on the matrix and result in a nice color contrast.

Mineral Data
What's on the rock

Smoky Quartz

Variety Of: 

Quartz

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

Stilbite

Synonym Of: 

Stilbite-Ca

Formula: 
NaCa4[Al9Si27O72]·nH2O
Strunz: 
9.GE.10
Hardness: 
3.5 - 4.0

Stilbite-Na

Formula: 
(Na,Ca,K)6-7[Al8Si28O72]·nH2O
Strunz: 
9.GE.10
Hardness: 
3.5 - 4.0
Hardness: 
3.5 - 4
Colour: 
White
Streak: 
White

Feldspar

Group Parent: 
Feldspar Group