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Olmiite & Bultfonteinite

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AMM1169801

Description Tabs

Description
Locality: 
NChwaning II Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 4 × 3 cm
Largest Crystal: 
10.00cm
Description

Fine specimen with large pale brown olmiite crystal aggregates on matrix. The olmiite shows a good lustre. In association with some white acicular bultfonteinite crystals.

Specimen from type locality for olmiite. Olmiite is only known from four localities worldwide.

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This auction exclusively features large collection specimens, with a minimum size of 3 centimetres (most pieces are significantly larger). These are exceptional or unusual collection specimens from times gone by, some with historical labels and, in most cases, with detailed information about their previous owners and other interesting facts.

Mineral Data
What's on the rock

Olmiite

Formula: 
CaMn2+[SiO3(OH)](OH)
Strunz: 
9.AF.90
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape Province, South Africa...

Bultfonteinite

Formula: 
Ca2(HSiO4)F·H2O
Strunz: 
9.AG.80
Hardness: 
4.5
Streak: 
white
Type Locality: 
Bultfontein, Lejweleputswa District, Free State Province, South Africa

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$10
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Start 15 Mar 18:00
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Shipping Information

Postage Area Price
Germany (insured parcel)
€6.50
Worldwide (tracked)
€10
USA (tracked)
€12
USA (tracked, > 0,5 kg)
€22
European Union (tracked, > 1 kg)
€18
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Combined shipping of multiple specimens is standard after full payment.

Multiple pieces may incur increased postage costs due to higher weight. 

For questions about shipping or possible costs, feel free to contact me: 

[email protected]

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

Seller's terms and conditions

Accepted payment methods: PayPal, bank transfer.

Money back guarantee is valid until 14 days after receiving the payment. The refund will be initiated immediately upon receiving the minerals back. Due to the return time, there may be a delay in the refund. 

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