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Cassiterite Arsenopyrite Jamesonite & Siderite

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MNT763158

Cassiterite Arsenopyrite Jamesonite & Siderite

Classic Locality

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Description
Locality: 
Viloco Mine, Loayza Province, La Paz Department, Bolivia
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.2 × 2.7 × 3 cm
Description

Nice paragenesis specimen from the Viloco mine: a matrix of arsenopyrite with nice lustrous crystals hosts light yellowish brownish partly translucent cassiterite crystals with almost opaque look due to high lustre, some brownish siderite and steel gray sprays of allegedly jamesonite. The acicular sulfosalt was not formally identified.

 

Mineral Data
What's on the rock

Cassiterite

Formula: 
SnO2
Strunz: 
4.DB.05
Crystal System: 
Tetragonal
Hardness: 
6.0 - 7.0

Arsenopyrite

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

Jamesonite

Formula: 
Pb4FeSb6S14
Strunz: 
2.HB.15
Crystal System: 
Monoclinic
Hardness: 
2.5
Type Locality: 
Cornwall, England, UK

Siderite

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

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Terms & Conditions

Thank you for your interest in my offers! Payment is possible via Paypal, bank transfer or cash if you pick up the item(s) personally. Bank data will be provided after settling the auction/transaction(s) if needed.

In case you are not happy with a specimen, you may send it back within 4 weeks. After receipt, i will refund the price minus shipping costs. Please inform me before sending an item back. If you have any questions (or maybe complaints) please feel free to contact me.

Best regards Roger

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