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Sturmanite

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PDM1152711

Description Tabs

Description
Locality: 
NChwaning Mines, Kuruman, Northern Cape Province, South Africa
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.1 × 4.2 × 2.7 cm
Weight: 
94.00gr
Description

Brown pseudohexagonal pseudodipyramidal crystals of sturmanite on a matrix of the same cream colour. Some areas have lustrous crystals of a yellow colour. Specimen from the “N'Chwaning mines”, with a label from Willy Israël, who sold it on March 23rd 1986 to Mr. Gustaf. Ex Gustaf collection #320, with his handwritten label.

Combine specimens to reduce shipping costs!.

Mineral Data
What's on the rock

Sturmanite

Formula: 
Ca6(Fe3+,Al,Mn3+)2(SO4)2[B(OH)4](OH)12·25H2O
Strunz: 
7.DG.15
Crystal System: 
Trigonal
Hardness: 
2.5
Type Locality: 
Black Rock Mine, Black Rock, Kalahari manganese field, Northern Cape Province, South Africa

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10
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Start 27 Nov 18:00
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Shipping Information

Postage Area Price
Belgium (Tracked)
7
NL, DE, FR, LU (Tracked)
10
EUROPE 1 (Tracked)
12
EUROPE 2 (Tracked)
15
USA, CANADA (Tracked)
21
REST (Tracked)
22

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

Bid History

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