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Gmelinite-Na & Analcime

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CSW1057203

Description Tabs

Description
Locality: 
Little Deerpark Quarry, Glenarm, County Antrim, Northern Ireland, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.6 × 5.3 × 4.2 cm
Description

Basalt matrix with an amygdale containing an unusually large example of a bright orange gmelinite-Na crystal associated with small, colourless analcime crystals. Other amygdales are lined with smaller gmelinite crystals. A6

Mineral Data
What's on the rock

Gmelinite-Na

Formula: 
(Na2,Ca)[Al2Si4O12]·6H2O
Strunz: 
9.GD.05
Crystal System: 
Hexagonal
Hardness: 
4.5
Type Locality: 
Nero Mt., San Pietro, Montecchio Maggiore, Vicenza Province, Veneto, Italy

Analcime

Formula: 
Na2(Al2Si4O12)·2H2O
Strunz: 
9.GB.05
Crystal System: 
Triclinic
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Cyclopean Islands, Acitrezza (Aci Trezza), Etna Volcanic Complex, Catania Province, Sicily, Italy

Seller Information

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