There are 2 Types of Tiger's Eye:
1. Crocidolite kind of yellow or brown, colored with iron oxides;
2. quartz with small inclusions of fibrous minerals and striped, golden or dark brown with silky glossy.
The origin of the original mineral - Crocidolite (alkaline amphibole) magmatic. Formed in granite with quartz and other minerals, where amphiboles formed along fractures.
Find conjunction with falcon eye.