flopkins
Ideal_Rock
- Joined
- Nov 15, 2004
- Messages
- 2,026
Rockdoc - you posted the following in Mine''s thread about spinels -
What do you mean by extinction? Does the color fade? I have not heard of this before.
Thanks!!
Spinel might be a good candidate as well. Just have to be careful of extinction in them.
Rockdoc
What do you mean by extinction? Does the color fade? I have not heard of this before.
Thanks!!