Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Calcioandyrobertsite & Stranskiite

Views:
Watches:
DLN150936

Calcioandyrobertsite & Stranskiite

Type Locality

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Size Range: 
Micromount (under 1cm)
Size: 
0.7 × 0.5 × 0.2 cm
Description

Sky blue crystals of the extremely rare and extremely sought after mineral calcioandyrobertsite (!) associated to very rare stranskiite in a colorful specimen of a rarity from Tsumeb. Of course type locality for both species. Matrix is tennantite. Calcioandyrobertsite has been famous since a photo of the oustanding type specimen was pictured in the cover of The Mineralogical Record (vol.30, nº3) jointly with the original article and was labeled as RRR! in the Gebhard book (single specimen). Don't miss the oppourtunity to get such a excepcional rarity ! The specimen has a label of Crystal Classics-Kristalle that will be sent to the buyer. In addition, the sample was in the Karlheinz Grosch Collection. The analysis of the sample has been made by Dr.Keller and Dr.Grosch. For more info: www.mindat.org/min-6840.html
Note.- Shipping costs are intended for Certified Mail. If you prefer the cheaper ordinary mail, please ask.

Mineral Data
What's on the rock

Calcioandyrobertsite

Formula: 
KCaCu5(AsO4)4(H2AsO4)·2H2O
Strunz: 
8.DH.50
Crystal System: 
Monoclinic
Hardness: 
3.0
Type Locality: 
Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia

Stranskiite

Formula: 
Zn2Cu(AsO4)2
Strunz: 
8.AB.35
Hardness: 
4.0 - 0.0
Colour: 
Cyan-blue
Type Locality: 
Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia
DLN Minerals

Seller Information

Payment options: offline, paypal_wpp, paypal_wps