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Tetrahedrite Var Freibergite

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QRI640960

Tetrahedrite Var Freibergite

Description Tabs

Description
Locality: 
La Confianza Mine, San Vicente District, Potosi Department, Bolivia
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.7 × 2.2 × 2.7 cm
Largest Crystal: 
0.40cm
Weight: 
26.00gr
Description

Elegant ore specimen featuring an open vein hosting a couple tetrahedrite crystals. The main crystal displays a perfect twinning, while the secondary ones appear to be single tetrahedrons. The vein is lined with secondary yellow-green crusts, mostly given by undetermined oxides.
Original informations coming with the label report it from 'Mina San Vicente, 1987'. Upon a quick search, it would appear that this is the name usually given to most specimens coming from the area, which however has a number of mines. I kept it with the original locality as I was not able to narrow it down.

A nice little sulfosalt from Bolivia!

Mineral Data
What's on the rock

Tetrahedrite

Formula: 
Cu6[Cu4(Fe,Zn)2]Sb4S13
Strunz: 
2.GB.05
Hardness: 
3.5 - 4.0

Freibergite

Formula: 
Ag6[Cu4Fe2]Sb4S13-x
Strunz: 
2.GB.05
Hardness: 
3.5 - 4.0
Colour: 
Grey
Type Locality: 
Reiche Zeche Mine, Himmelfahrt Mine, Freiberg, Freiberg District, Erzgebirge, Saxony, Germany

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

Seller's terms and conditions

Shipping within 15 days after payment received, unless specified/agreed otherwise.

NOTE:
Due to a very busy holiday schedule, specimens paid after Dec 14 will be shipped by Januar 7. For any information or combined shipping please contact me.

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