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Harmotome

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GF3708

Description Tabs

Description
Locality: 
Whitesmith Mine, Strontian, Argyll, Scotland, United Kingdom
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 6.5 × 4.2 cm
Description

Typical matrix overgrown with numerous brilliant white highly lustrous single crystals of varying size.

Mineral Data
What's on the rock

Harmotome

Formula: 
(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] ·12H2O
Strunz: 
9.GC.10
Crystal System: 
Monoclinic
Hardness: 
4.0 - 5.0
Streak: 
White
Type Locality: 
St Andreasberg, St Andreasberg District, Harz, Lower Saxony, Germany
Provenance

George Fletcher Collection

Tue, 2015-09-29 15:51 -- admin
Some History
Name: 
George Fletcher
Dates: 
d.2023
Type: 
Collector/Collection
Specialisms: 
Derbyshire/Midlands, Weardale, United Kingdom
About

George Fletcher lived, worked and collected a lot in the Derbyshire, Peak distrct however as a prolific collector travelled all over the...

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

Seller's terms and conditions
1. the successful bidding price is the price that will appear on your invoice. 2.Goods will be sent first class post within the UK and by small packet air mail to the US. Delivery will normally be within 7 days of despatch. Postage will be charged at cost and will be included on your invoice. 3. there are no additional charges for VAT or any other taxes. 4. insurance can be arranged, if requested, and will be charged as part of the shipping costs. 5. Goods will only be despatched on receipt of payment. For methods of payment please see "Payment Types" 6. We aim to give complete satisfaction at all times. Goods are supplied on 14 days approval. If you are not satisfied with your purchase and the goods are returned undamaged within that time we promise to refund the full value of the item(s) returned, excluding any postage incurred in the transaction. 7. Broadstone Minerals operates a Privacy policy. We do not disclose buyer's information to third parties. Cookies are used to keep track of the contents of your shopping trolley once you have selected an item, to store delivery addresses if the address book is used and to store your details if you select the "remember me " option.