Dims:3.1x2.1x0.6" (7.9x5.3x1.5 cm)
Wt: 2.7oz. (76g)
Pershing cty., Nevada
At first glance, this specimen appears to be an impure mica schist. Upon examination with a loupe, however, the "mica" turns out to be thousands of tiny radiating needles of dumortierite in a quartz host. The needles range up to 0.1" (0.3cm) in length, and are translucent. These crystals are greenish in color. This is a fascinating specimen to examine under a loupe.