- Thumbnail, 2.7 x 1.6 x 1.1 cm
- Kelly Mine, Randsburg, Rand District, Kern Co., California, USA
A very rich, old-time and uncommon silver ore specimen from the Kelly Mine of Randsburg, California. This sparkly, gray metallic piece is extremely miargyrite-rich silver ore and is loaded with euhedral microcrystals. Miargyrite is a rare silver, antimony sulfosalt. Ex. Cal Tech Collection.