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Quartz

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QRI830064

Quartz

Former collection Christian Mavris
Classic Locality

Description Tabs

Description
Locality: 
Rio Tinto Mines, Huelva, Andalusia, Spain
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.5 × 8.5 × 7.1 cm
Largest Crystal: 
1.70cm
Weight: 
479.00gr
Description

This specimen is a piece of (mining) history. I collected it in 2014 in the framework of a research project on the hill of Quebrantahuesos in Rio Tinto. I found those quartz crystals as part of a vein on the top part of the local acidic alteration sequence and collected it as it was among the first quartz crystals I had seen in the mining area. On the way out, I was told that the the hill would have been blown up and collected for ore extraction within the same week (as it happened indeed). Therefore you can call the locality 'defunct'. 

Apart from being a crystallized quartz from the legendary area, mostly known for its beautiful sulphates and oxides, the specimen hosts a clear left quartz crystal, protected in the main vug. Quartz crystals also present some dark iron oxide crusts, most likely a mixture of goethite-hematite (as it turned out analytically on surrounding material).

It comes from my personal collection, and I have yet to see another one like it.

Mineral Data
What's on the rock

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

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10
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Start 11 Feb 13:00
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Shipping Information

Postage Area Price
Italy (Pacco Celere 3)
10
Europe/Mediterranean Basin (Tracked; Zone 1)
22
Americas, Asia, Africa (Tracked; Zone 2)
30
Australia & Oceania (Tracked; Zone 3)
40

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