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Boltwoodite

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MNT788133

Boltwoodite

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Description
Locality: 
Goanikontes, Arandis, Erongo Region, Namibia
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.2 × 3.2 × 2.1 cm
Description

Boltwoodite specimens from Goanikontes are increasingly rare. This one was found around 2004/2005 when quite a lot of nice specimens were extracted at the Goanikontes claim. It features small yellow to orange sprays of more or less acicular boltwoodite crystals with small quartz crystals settling on host rock matrix. Did not check for weeksite ;-)

Mineral Data
What's on the rock

Boltwoodite

Formula: 
(K,Na)(UO2)[HSiO4]·0.5H2O
Strunz: 
9.AK.15
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Pick's Delta Mine (Delta Mine; Pick's Mine), Delta, San Rafael District (San Rafael Swell), Emery Co., Utah, USA...

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Terms & Conditions

Thank you for your interest in my offers! Payment is possible via Paypal, bank transfer or cash if you pick up the item(s) personally. Bank data will be provided after settling the auction/transaction(s) if needed.

In case you are not happy with a specimen, you may send it back within 4 weeks. After receipt, i will refund the price minus shipping costs. Please inform me before sending an item back. If you have any questions (or maybe complaints) please feel free to contact me.

Best regards Roger