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Ettringite On Calcite

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JWM943979

Ettringite On Calcite

Description Tabs

Description
Locality: 
Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Combination
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 2.5 × 1.7 cm
Weight: 
8.50gr
Description

A pale yellow hexagonal ettringite crystal on a base of gemmy white calcite crystals.  An aesthetic specimen.

Actual shipping cost will be calculated and added to the invoice.

Previous labels supplied (not photographed)
Mineral Data
What's on the rock

Ettringite

Formula: 
Ca6Al2(SO4)3(OH)12·26H2O
Strunz: 
7.DG.15
Hardness: 
2.0 - 2.5
Type Locality: 
Ettringer Feld, Western lava flow, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Current price

$

Starting price

$45
(reserve not met) (reserve met)

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Start 30 Nov 18:00
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Shipping Information

Postage Area Price
United States
$10
Europe
$20
Rest of world
$30

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

Seller's terms and conditions

Payment accepted through Paypal using the email [email protected].