Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Gaudefroyite & Ettringite

Views:
Watches:
SLN748430

Gaudefroyite & Ettringite

Description Tabs

Description
Locality: 
Wessels Mine, Hotazel, Kalahari, Northern Cape Province, South Africa
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.5 × 5.7 × 3.6 cm
Weight: 
112.00gr
Description

Nice specimen from South Africa with a myriad of sparkling prismatic-hexagonal black Gaudefroyite crystals in association with pale yellow Ettringite

Mineral Data
What's on the rock

Gaudefroyite

Formula: 
Ca4Mn3+2-3(BO3)3(CO3)(O,OH)3
Strunz: 
6.AB.60
Hardness: 
6.0
Type Locality: 
Tachgagalt Mine, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco

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

Seller Information

Payment options: offline, paypal_wpp, paypal_wps