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Ettringite & Calcite

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SSM940519

Ettringite & Calcite

Description Tabs

Description
Locality: 
NChwaning II Mine, Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Combination
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.7 × 4.1 × 3.4 cm
Weight: 
22.88gr
Description

An aggregate of gemmy lemon-yellow drusy ettringite crystals associated with minor and tiny clear calcite, white barite and black gaudefroyite.

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

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

Seller's terms and conditions

 

Our parcels are normally sent via post office airmail with a tracking number, however courier services are available on request.

Delivery times will vary with destination. Please note that Customs can delay the shipment and this is out of our control. Kindly contact us to assist with tracking if you are experiencing longer than expected delays. 

Please note that all of our specimens are carefully packaged and marked as fragile. As soon as it has been posted, we shall e-mail you with the tracking number of the parcel.

Insurance will be taken out only if it is the buyer's expressed wish. 

If your country has Customs and Import duty fees, it will have to be for your account.