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Gmelinite Analcime & Calcite

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Gmelinite Analcime & Calcite

Classic Locality

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Description
Locality: 
Little Deerpark Quarry, Glenarm, County Antrim, Northern Ireland, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
11 × 8.5 × 5.5 cm
Weight: 
470.00gr
Description

A unique specimen from the former gmelinite Type Locality displaying an amygdale in basalt matrix lined with small analcime crystals, coloured green by underlying saponite. On top of these have grown a lovely cluster of tabular, cream and orange coloured gmelinite crystals followed by a second generation of smaller cream coloured gmelinite crystals. Clusters of small calcite crystals finish off this attractive paragenesis. The specimen was collected by myself and was up until now in my personal collection.

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

Calcite

Polymorph of: 
Aragonite and Vaterite
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Current price

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Starting price

$65
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Shipping Information

Postage Area Price
UK
$6
Europe
$20
USA
$30
Rest of World
$25
View sellers shipping policy

Postage will be by 1st Class Royal Mail post within UK and by Tracked Insured Courier for international sales.

Simply let me know if you would like to accumulate orders and 'keep a box open' to benefit from combined postage savings.

If you have any queries feel free to drop me an email.

Many thanks, Trevor

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

Seller's terms and conditions

Thank you for viewing my auctions. It goes without saying that maintaining high standards in both specimen quality and customer service are extremely important to me. If for any reason you are not happy with any aspect of your transaction then please let me know as soon as possible, ideally within 1 week of receiving your specimen. I will happily do all in my power to resolve the situation to your satisfaction. If your specimen is damaged upon delivery simply send me some photos to verify this and I'll provide you with a full refund or a replacement specimen, whichever you prefer. 

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