Bayldonite  | ‪#‎Geology‬

Formula: PbCu3(AsO4)2(OH)2
System: Monoclinic
Colour: Green, apple-green, ...
Lustre: Resinous, Waxy, Greasy
Hardness: 4½


This is a complete-all-around, radiating spray of glistening, sparkly, grass-green bayldonite that has completely replaced a mimetite cluster. It dates from the first oxidation zone, 1890s-1910s at the latest. Ex. Sussman and Dr. Georg Gebhard Collections. 

Locality: Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia
 Size: 5 x 4 x 3.5 cm.

 Copyright © Rob Lavinsky