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Harmotome On Chalcedony

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SHS135870

Harmotome On Chalcedony

Description Tabs

Description
Locality: 
Basalt Quarry, Weitendorf, Leibnitz District, Styria, Austria
Size Range: 
Thumbnail (1-3cm)
Size: 
1.9 × 1 × 1.5 cm
Description

Harmotom crystals on chalcedony

Mineral Data
What's on the rock

Harmotome

Formula: 
(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] ·12H2O
Strunz: 
9.GC.10
Crystal System: 
Monoclinic
Hardness: 
4.0 - 5.0
Streak: 
White
Type Locality: 
St Andreasberg, St Andreasberg District, Harz, Lower Saxony, Germany

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