Mineral Identification

So far the mineral you are identifying is a light colored non-metallic mineral with a hardness less than 5 that exhibits fracture.

You now have enough information to begin identifying your mineral. The chart below contains all common rock forming minerals that have the specific properties you have described. To identify you mineral read through the following descriptions and determine which mineral best matches your sample

Hardness
Description
Name
Additional Data
1
  • Opaque white, gray or green.
  • can be scratched by fingernail
  • soapy feel
Talc
1-2
  • Opaque earthy white to light brown.
  • often powdery
Kaolinite
1.5-2
  • Yellow crystals or earthy masses
Sulfur
2-5
  • Opaque green, yellow or gray
  • silky or greasy feel
Serpentine

 

©2006 Sean Tvelia