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Powellite & Hyalite

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BSM195948

Powellite & Hyalite

ex Peter Tye Collection
Fluorescent

Description Tabs

Description
Locality: 
Coaldale District, Esmeralda County, Nevada, United States of America
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.4 × 4.3 × 3.5 cm
Description

 A beige coloured mass with minor flakes of mica and a cream coloured layer of powellite.  There is a very thin coating of hyalite which gives a very pale green tinge in places under ultraviolet light.  The fluorescence of the powellite is the dominant feature. 

Mineral Data
What's on the rock

Powellite

Formula: 
Ca(MoO4)
Strunz: 
7.GA.05
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0
Type Locality: 
Peacock Mine (South Peacock; Darland; Peacock & South Peacock), Cuprum, Seven Devils District, Adams Co., Idaho, USA

Hyalite

Variety Of: 

Opal

Formula: 
SiO2·nH2O
Strunz: 
4.DA.10
Hardness: 
5.5 - 6.5
Formula: 
SiO2·nH2O
Hardness: 
5.5 - 6.5
Streak: 
white

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.