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Boltwoodite With Calcite & Goethite

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TBM846246

Boltwoodite With Calcite & Goethite

Classic Locality

Description Tabs

Description
Locality: 
Goanikontes, Arandis, Erongo Region, Namibia
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 3.5 × 3.5 cm
Weight: 
88.00gr
Description

Very rare and top quality  sample with yellow egg  colors needles collected in tuft up to 1,5 mm long

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...

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Goethite

Formula: 
α-Fe3+O(OH)
Strunz: 
4.00.
Crystal System: 
Orthorhombic
Hardness: 
5.0 - 5.5
Type Locality: 
Hollertszug Mine (Hollerter Zug Mine), Dermbach, Herdorf, Siegerland, Rhineland-Palatinate, Germany

Current price

Starting price

250
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Start 06 Sep 18:00
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Shipping Information

Postage Area Price
ITALY
9.50
EUROPE ( AREA 1)
12.50
AMERICAN - UK - ASIA - AFRICA - OCEANIA ( AREA 2/3):
17