Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Gmelinite On Analcime

Views:
Watches:
PCZ156847

Gmelinite On Analcime

Type Locality

Description Tabs

Description
Locality: 
Little Deerpark Quarry, Glenarm, County Antrim, Northern Ireland, United Kingdom
Size Range: 
Cabinet (10-18 cm)
Size: 
11 × 6 × 2.5 cm
Description

This specimen has a 3.0 x 1.5 cm vug lined by water clear, highly reflective analcime crystals. On top of these rest a couple of well formed hexagonal gmelinite crystals, the larger being 0.9 cm across. As with last month all specimens in this auction have a starting bid of just $3 regardless of size, TL etc.

Mineral Data
What's on the rock

Gmelinite

Synonym Of: 

Gmelinite-Ca

Formula: 
(Ca,Na2)[Al2Si4O12]·6H2O
Strunz: 
9.GD.05
Hardness: 
4.5

Gmelinite-K

Formula: 
(K2,Na2,Ca)[Al2Si4O12]·6H2O
Strunz: 
9.GD.05
Hardness: 
4.5

Gmelinite-Na

Formula: 
(Na2,Ca)[Al2Si4O12]·6H2O
Strunz: 
9.GD.05
Hardness: 
4.5
Group Parent: 
Zeolite Group

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
Peter Crozier Minerals