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Stibnite & Chalcedony

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MNR689245

Stibnite & Chalcedony

Description Tabs

Description
Locality: 
Kremnica, Žiar nad Hronom County, Banská Bystrica Region, Slovakia (Slovak Republic)
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.2 × 5 × 3 cm
Largest Crystal: 
1.00cm
Description

Interesting stibnite sample covered by layers of chalcedony.  It's very rich with multiple stibnite sprays at one side and stalactites of chalcedony growing and covering stibnite needles up to 1 cm. Stibnite is kind of frozen in botryoidal chalcedony.

Unusual sample, very few found at locality. The sample was found in 1998.
 

Mineral Data
What's on the rock

Stibnite

Formula: 
Sb2S3
Strunz: 
2.DB.05
Hardness: 
2.0
Streak: 
Lead grey

Chalcedony

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
Kadıköy (Chalcedon), Istanbul Province, Marmara Region, Turkey