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Laumontite & Stilbite

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CFL1087655

Description Tabs

Description
Locality: 
Halls Harbour, Kings County, Nova Scotia, Canada
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.3 × 5.7 × 1.2 cm
Description

Superb ''floater'' specimen of laumontite crystals associated with stilbite.  Stilbite forms the matrix of this specimen.

Mineral Data
What's on the rock

Laumontite

Formula: 
CaAl2Si4O12·4H2O
Strunz: 
9.GB.10
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Huelgoat (Locmaria-Berrien), Finistère, Brittany, France

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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Canada
$14
USA
$14
Europe
$15
Rest of World
$17

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