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Okenite Lévyne & Heulandite

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BGM541640

Okenite Lévyne & Heulandite

Description Tabs

Description
Locality: 
Strond Quarry, Borðoy Island, Faroe Islands, Denmark
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
5 × 6 × 9 cm
Weight: 
437.00gr
Description

White and creme okenite spheres. Thin, tabular needle crystals of levyne and vugs lined with glassy heulandite.

Condition: Very good!

Mineral Data
What's on the rock

Okenite

Formula: 
CaSi2O5·2H2O
Strunz: 
9.EA.40
Hardness: 
4.5 - 5.0
Type Locality: 
Qutdligssat (Kudlisat), Qeqertarsuaq Island (Disko Island), Qaasuitsup, Greenland

Lévyne

Strunz: 
77.1.2.8
Hardness: 
4 - 4½
Colour: 
White
Streak: 
White

Heulandite

Synonym Of: 

Heulandite-Ba

Formula: 
(Ba,Ca,K,Na,Sr)5Al9Si27O72·22H2O
Strunz: 
9.GE.05
Hardness: 
3.5

Heulandite-Ca

Formula: 
(Ca,Na)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Hardness: 
3.5 - 4.0

Heulandite-K

Formula: 
(K,Na,Ca)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Hardness: 
3.0 - 3.5

Heulandite-Na

Formula: 
(Na,Ca)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Hardness: 
3.0 - 3.5

Heulandite-Sr

Formula: 
(Sr,Na,Ca)2-3Al3(Al,Si)2Si13O36·12H2O
Strunz: 
9.GE.05
Hardness: 
3.0 - 3.5
Hardness: 
3 - 3.5
Colour: 
White
Streak: 
White

Seller Information

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