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Hyalite On Schorl

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RAF719871

Hyalite On Schorl

Fluorescent

Description Tabs

Description
Locality: 
Erongo Mountains, Karibib, Erongo Region, Namibia
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.7 × 3.6 × 3.1 cm
Largest Crystal: 
3.00cm
Weight: 
55.00gr
Description

A nice Hyalite on Schorl specimen from the N'chwaning II Mine. This specimen has Schorl on one side and Hyalite crystals on the other side.  Very strong fluorescent.

Mineral Data
What's on the rock

Hyalite

Variety Of: 

Opal

Formula: 
SiO2·nH2O
Strunz: 
4.DA.10
Hardness: 
5.5 - 6.5
Formula: 
SiO2·nH2O
Hardness: 
5.5 - 6.5
Streak: 
white

Schorl

Formula: 
Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Strunz: 
9.CK.05
Hardness: 
7.0