Dims: 2.0 x 1.8 x 0.9" (5.1 x 4.6 x 2.3 cm)
Wt: 1.40 oz. (39.8 g)
Broken Hill Mine, New South Wales, Australia
This small hand specimen consists of a broken chunck of Microcline, a member of the feldspar group. This piece is in fair to poor condition, showing much breakage, and has crystalline tendencies but no actual crystal form. Some surfaces are flat and apparently cleaved- these have a pearly luster- but others are obviously freshly broken, and have a brighter, vitreous luster. The grass-green color of the material is quite striking, however, as is the fact that it is translucent and contains areas of dim transaprence. There are a few bits of broken, crystalline galena present, and possibly some milky quartz, though it could just be more Microcline with a gray coloration.