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Powellite On Apophyllite With Stilbite

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SHW735603

Powellite On Apophyllite With Stilbite

Description Tabs

Description
Locality: 
Yeola, Nashik District, Maharashtra, India
Class: 
Combination
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 1.3 × 1.3 cm
Weight: 
3.00gr
Description

Double terminated brigh honey yellow crystal of powellite on cubical clear apophyllite with stilbite and some quartz. There are some unknown crystals (probably hematite) grown over the surface of powellite crystal.

Mineral Data
What's on the rock

Powellite

Formula: 
Ca(MoO4)
Strunz: 
7.GA.05
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0
Type Locality: 
Peacock Mine (South Peacock; Darland; Peacock & South Peacock), Cuprum, Seven Devils District, Adams Co., Idaho, USA

Apophyllite

Synonym Of: 

Fluorapophyllite-(K)

Formula: 
KCa4(Si8O20)(F,OH)·8H2O
Strunz: 
9.EA.15
Hardness: 
4.5 - 5.0

Fluorapophyllite-(Na)

Formula: 
NaCa4(Si8O20)F·8H2O
Strunz: 
9.EA.15
Hardness: 
4.0 - 5.0

Hydroxyapophyllite-(K)

Formula: 
KCa4(Si8O20)(OH,F)·8H2O
Strunz: 
9.EA.15
Hardness: 
4.0 - 5.0

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

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