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Sturmanite & Ettringite

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MBM1165794

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Description
Locality: 
NChwaning Mines, Kuruman, Northern Cape Province, South Africa
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 3 × 2.5 cm
Description

Interesting Sturmanite - Ettringite up to 2mm from the NChwaning Mines, Kuruman in South Africa.

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

Ettringite

Formula: 
Ca6Al2(SO4)3(OH)12·26H2O
Strunz: 
7.DG.15
Hardness: 
2.0 - 2.5
Type Locality: 
Ettringer Feld, Western lava flow, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany

Current price

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€10
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Start 15 Feb 18:00
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Shipping Information

Postage Area Price
Germany
€7
Europe
€10
Worldwide
€14
USA (tracked and injured)
€30
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Shipping generally after payment if not otherwise negotiated, usually at the weekend after receipt. Standard shipping is via registered airmail to Europe and worldwide. In order to save shipping costs it is possible to combine shipping of multiple won auctions/purchased items. If you want to use this option, please tell me via mail BEFORE you make payment of single items! This avoids double packing work and i will send a combined invoice when you are ready. Please note that i can not hold any responsibility for transport damages or loss of shipped goods if you do not select insured shipping, which can be asked for. Transport damages are to be claimed directly to the transport company in case of insured shipment. The recipients are solely responsible for the compliance of the shipped items with local customs restrictions and tax issues.

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