- Eureka Farm, Usakos, Karibib District, Erongo Region, Namibia
- Miniature, 4.3 x 2.8 x 1.2 cm
- Ex. Charlie Key
A superb book of sharp complex Biotite Mica intergrown with Orthoclase Feldspar. The luster and form are both superb, and the crystal is a very impressive 4.2 cm across. Ex. Charlie Key.