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Quartz & Siderite With Arsenopyrite & Chalcopyrite

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KSC568117

Quartz & Siderite With Arsenopyrite & Chalcopyrite

Description Tabs

Description
Locality: 
Panasqueira Mines, Covilhã, Castelo Branco District, Portugal
Class: 
Single Crystal
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.4 × 3 × 2 cm
Description

That's a really fine miniature of quartz from a European locality very well-known for other species! The gem crystals are terminated all around, even recrystallised at the base, show muscovite inlusions and bent special form! There are "s" faces near the terminations and glassy luster on all of the faces! On the side, there is a translucent, satin lustrous, ochre colered siderite crystal! There are tiny chalcopyrite crystals and an arsenopyrite crystal near the base! The piece is beautiful 360 degrees and visually prisitne!

Mineral Data
What's on the rock

Quartz

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

Siderite

Formula: 
FeCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White

Arsenopyrite

Formula: 
FeAsS
Strunz: 
2.EB.20
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0

Chalcopyrite

Formula: 
CuFeS2
Strunz: 
2.CB.10a
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0

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Start 28 Nov 18:00
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