This preview shows page 1. Sign up to view the full content.
Unformatted text preview: Luster is the way a material reflects light, crystals form with planar surfaces or facets, and a minerals habit is its distinctive shape. A minerals hardness is determined by scratching and cleavage is a breakage surface which is smooth. Color is the observed color of the mineral and streak is more reliable form of color identification, obtained by rubbing the material on a streak plate to see the true color. Density is how light or heavy a material feels. The major difference between minerals and rocks is that rocks are aggregates, which means that they are made up of minerals and or other materials stuck together....
View Full Document
This note was uploaded on 01/20/2011 for the course SCI 245 sci 245 taught by Professor Cram during the Spring '10 term at University of Phoenix.
- Spring '10