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Gobbinsite Analcime & Saponite

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CSW142510

Gobbinsite Analcime & Saponite

Description Tabs

Description
Locality: 
North Gobbins Cliffs, Island Magee, County Antrim, Northern Ireland, United Kingdom
Size Range: 
Small cabinet (7-10 cm)
Size: 
5.5 × 7 × 4 cm
Description

Basalt matrix with multiple amygdales filled with pale orange radiating gobbinsite. Gobbinsite from Northern Ireland is more normally white in colour whoever the colour in this specimen may be due in part to cation exchange of Ca and Na ions from sea water. Other amygdales contain transparent analcime crystals overgrowing saponite balls and small white ball's which may be gonnardite.

Mineral Data
What's on the rock

Gobbinsite

Formula: 
Na4(Ca,Mg,K2)Al6Si10O32·12H2O
Strunz: 
9.GC.05
Hardness: 
4.0
Type Locality: 
Hills Port, Gobbins, Island Magee, Co. Antrim, Northern Ireland, UK

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

Saponite

Formula: 
Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2·nH2O
Strunz: 
9.EC.45
Hardness: 
1.5 - 2.0
Type Locality: 
Lizard Point, Landewednack, Lizard Peninsula, Cornwall, England, UK

Seller Information

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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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