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Mellite Var Gehlenite & Plombièrite

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Mellite Var Gehlenite & Plombièrite

Classic Locality

Description Tabs

Description
Locality: 
Scawt Hill, Larne, County Antrim, Northern Ireland, United Kingdom
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.3 × 3 × 2.8 cm
Weight: 
30.00gr
Description

Matrix with araeas of brown glassy gehlenite and yellow plombierite from a locality famous for its unusual suite of calc-silicate minerals formed by metasomatic action of a dolerite intrusion on chalk.

Mineral Data
What's on the rock

Mellite

Formula: 
Al2[C6(COO)6]·16H2O
Strunz: 
10.AC.05
Crystal System: 
Tetragonal
Hardness: 
2.0 - 2.5
Streak: 
White
Type Locality: 
Artern, Unstrut valley, Thuringia, Germany

Gehlenite

Formula: 
Ca2Al(AlSiO7)
Strunz: 
9.BB.10
Crystal System: 
Tetragonal
Hardness: 
5.0 - 6.0
Type Locality: 
Monzoni Mts, Fassa Valley, Trento Province, Trentino-Alto Adige, Italy

Plombièrite

Formula: 
[Ca4Si6O16(OH)2 · 2H2O]·(Ca·5H2O)
Group Parent: 
Tobermorite Group
Strunz: 
9.DG.08
Crystal System: 
Orthorhombic

Seller Information

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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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