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Chalcedony & Riebeckite Tiger's Eye

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DVE92231

Chalcedony & Riebeckite Tiger's Eye

Ex-David J. Eicher Collection

Description Tabs

Description
Locality: 
Griqualand, Northern Cape Province, South Africa
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.2 × 6.8 × 0.5 cm
Description

Excellent polished slab of this chatoyant quartz that contains amphibole fibers altered into limonite. Great color and flash!

Mineral Data
What's on the rock

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

Riebeckite

Formula: 
◻[Na2][Fe2+3Fe3+2]Si8O22(
Strunz: 
9.DE.25
Hardness: 
5.0 - 5.5
Type Locality: 
Socotra Island, Adan Governorate, Yemen

Tiger's Eye

Mixture Of: 

Crocidolite

Hardness: 
0.0

Riebeckite

Formula: 
◻[Na2][Fe2+3Fe3+2]Si8O22(
Strunz: 
9.DE.25
Hardness: 
5.0 - 5.5

Chalcedony

Hardness: 
6.5 - 7.0
David J. Eicher

Seller Information

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