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Chalcocite & Nickeloan Siderite

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BSM40810

Chalcocite & Nickeloan Siderite

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.3 × 4 × 3.9 cm
Largest Crystal: 
1.70cm
Description

A very rich specimen with several significant complex crystals and crystal groups richly growing from matrix.   Scattered over are numerous tiny yellow nickel rich siderite crystals which suggests this specimen originated from the 46th level. 

The reference books claim that very few matrix specimens were ever collected.   This is one of them.

Mineral Data
What's on the rock

Chalcocite

Formula: 
Cu2S
Strunz: 
2.BA.05
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0

Nickeloan Siderite

Variety Of: 

Siderite

Formula: 
FeCO3
Strunz: 
5.AB.05
Hardness: 
3.5 - 4.5
Formula: 
A nickel rich variety of siderite

Seller Information

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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.