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Schorl Feldspar & Opal Var Hyalite

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HAN765612

Schorl Feldspar & Opal Var Hyalite

Description Tabs

Description
Locality: 
Erongo Mountains, Karibib, Erongo Region, Namibia
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
9.6 × 11.4 × 8.8 cm
Weight: 
471.00gr
Description

Large Schorl Tourmaline crystal perched on Feldspar with a last generation growth of Opal variety Hyalite . The Hyalite fluoresces green in UV SW and LW - Uranyl activated fluorescence.

Mineral Data
What's on the rock

Schorl

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

Feldspar

Group Parent: 
Feldspar Group

Opal

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

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

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

Seller's terms and conditions

After a sale we expect to receive the payment with Pay Pal within 48 hours. You can return the goods within 14 days of receiving them by registered priority mail with tracking number. Buyer pays the costs of the return shipping