the world > the earth > minerals > types of mineral > sulphates > [noun] > gypsum > selenite (7)
Mineralogy. Sulphate of lime (gypsum) in a crystalline or foliated form. Also, a slip or film of this mineral used for the polarization of light.
Mineralogy. = selenite, n.1 2.
Something used for stanching blood, a styptic. dialect. Selenite or powdered gypsum.
A mineral formed in translucent sheets or flakes, either mica or selenite (gypsum).