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Opal-AN On Fluorite On Schorl

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SMS1112965

Opal-AN On Fluorite On Schorl

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Description Tabs

Description
Locality: 
Erongo Mountains, Karibib, Erongo Region, Namibia
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.4 × 5.9 × 4.4 cm
Weight: 
130.38gr
Description

The specimen has a cross section of a feldspar crystal finished in schorl as a core which has formed a ball like surround. The ball-like surrounded of schorl merges into an outer shell of fluorite that is penetrated by schorl and is itself made up of small transparent pale green zoned to violet coloured cuboctahedral crystals. The mass of opal-AN on the top is made up of radial narrow sprays culminating into a cauliform spread of amorphous crystals.

Mineral Data
What's on the rock

Opal-AN

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

Fluorite

Formula: 
CaF2
Strunz: 
3.AB.25
Crystal System: 
Isometric
Hardness: 
4.0
Streak: 
White
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

Schorl

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

Current price

$

Starting price

$10
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Shipping Information

Postage Area Price
Europe up to 500 grams
$12
Europe up to 1 kilogram
$16
United States up to 500 grams
$14
United States up to 1 kilogram
$18
Rest of world up to 500 grams
$14
Rest of world up to 1 kilogram
$18
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Processing Time: Paid orders are typically processed and shipped within 2 to 3 business days.

Estimated Delivery Time: Once shipped, the estimated delivery time is 4 to 7 business days worldwide.

Shipping Carrier: Orders are shipped using FedEx International Priority.

Important Notes:

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Combined Shipping: We do offer combined shipping. The cost is $4 added to the shipping cost per additional 500 grams. Please note that the packaging weight also needs to be taken into account. The average packaging weight is 150 grams to 300 grams for larger parcels.

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