CLINOHEDRITE
Specimen clh-2

Dims: 5.5 x 3.5 x 2.9" (13.9 x 8.8 x 7.3 cm)

Wt: 2 lbs., 11.0 oz. (1.219 kg)

Franklin, New Jersey, U.S.A.

Under normal lighting, the massive Clinohedrite embedded in this specimen is essentially impossible to isolate- it is simply a pale brown mineral among other pale brown minerals that are embedded in a mottled brown rock. When exposed to shortwave ultraviolet light, however, one can easily see this mineral by its yellow-orange fluorescent glow. It shows no evidence of crystal form and has a dull luster. Among it are other nondescript minerals, such as willemite and hardystonite- these glow under u/v light also, with respective bright green and dull violet colors. The most easily seen mineral, in fact, is franklinite, which has a black color and submetallic luster, and does not glow under u/v light.

Dims: 2.48x1.97x1.14" (6.3x5.0x2.9cm)

Wt: 6.55oz (185.5g)

Franklin, New Jersey, USA

This mottled brown chunk of rock from the mines in Franklin, NC, shows nothing of interest under normal light. Under short-wave ultraviolet, however, two minerals glow. Bright green reveals the presence of willemite (barely visible in the image), and a yellow-orange glow reveals the presence of clinohedrite (the color is slightly different and less intense than the orange that the local calcite can glow). Unfortunately, the orange glow of the clinohedrite, while easy to see with a human eye, is not picked up by my camera. The clinohedrite is only present on one face of the specimen.