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Erionite-K & Saponite

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CSW198117

Erionite-K & Saponite

Ex Harry J. Foy Collection
Classic Locality

Description Tabs

Description
Locality: 
Giants Causeway, County Antrim, Northern Ireland, United Kingdom
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.7 × 3.5 × 2.1 cm
Description

Basalt matrix with amygdales lined with brown saponite and containing white hair-like clusters of rare erionite-K crystals from a classic Irish zeolite locality. This specimen was collected by the late Harry J, Foy who contributed hugely to the knowledge of Irish minerals. He collected from the mid 1960's until ill health forced him to stop in the late 1990's. The specimen will come with a pdf copy of an article on Harry first published in Earth Science Ireland magazine and reproduced with their permission.

Mineral Data
What's on the rock

Erionite-K

Formula: 
(K2,Ca,Na2)2[Al4Si14O36]·15H2O
Strunz: 
9.GD.20
Crystal System: 
Hexagonal
Hardness: 
3.5 - 4.0
Type Locality: 
Rome, Marion Co., Oregon, USA

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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