Other physical properties that are commonly seen in reflected light include evidence of mineral hardness and cleavage, and internal reflections in minerals that are not total opaque (these become dominant in silicates and other transparent minerals  note the calcite matrix in the graphite photo above).
Ralston, Wyoming. Ralston is a census-designated place (CDP) in Park County, Wyoming, United States. The population was 280 at the 2010 census.
The premise. Twenty-seven-year-old Aron Ralston ( James Franco) is a mechanical engineer and thrill-seeker. He is in Utah's Blue John Canyon when he falls down a narrow canyon, and his arm is pinned by a large chalkstone boulder. He watches as his fingers turn blue and gray from insufficient blood flow (ischemia).