Fluorite



Image copyright: http://www.getloupe.com/
Fluorite has CaF2. The uses are stainless steel, refrigerant, and plastic industeries. Pure fluorite has no color; the color variations are caused by variuos impourities. Fluorite occurs in all colors, including colorless, white, purple, blue, red, pink, orange, yellow, brown, green, gray, and black. May also be multicolored and banded. The streak is white

The hardness is a 4. Cleavage is perfect on {111}, very easy. Fluorspar (fluorite) is found in granite (igneous rock), it fills cracks and holes in sandstone, and it is found in large deposits in limestone (sedimentary rock). Fluorite colors may be very intense and almost electric. Fluorite may occur as a vein deposit, especially with metallic minerals.

Its crystals, commonly cubic, are transparent or translucent and under certain conditions exhibit fluorescence. Fluorite has a vitreous (glassy) luster. Luster describes how a mineral appears to reflects light.The fracture is splintery, Sub-Conchoidal.

Video Showing Many Pictures of Fluorite
https://www.youtube.com/watch?v=rrvs1n6tMcU
Links:
   Bullet  mindat /mineral data
   Bullet  mineralseducation
   Bullet  minerals
   Bullet  luope
   Bullet  fluorite pics
   Bullet  fluorite article
   Bullet  encyclopedia
   Bullet  fluorite luster
This page was edited by Joseph R (Teacher: Angela Ackley) using Web Poster Wizard.