metamorphic
Anyolite (Ruby in Zoisite)
Zoisite with inclusions of Hornblende and Ruby (Ca2Al3(SiO4)3(OH))
Hardness: 6-7 (Zoisite) to 9 (Ruby spots); Color: Bright green with black speckles (Hornblende); Luster: Vitreous to pearly; Crystal structure: Orthorhombic; Specific gravity: 3.35
- Hardness
- 6-7 (Zoisite) to 9 (Ruby spots)
- Color
- Bright green with black speckles (Hornblende)
- Luster
- Vitreous to pearly
Identified More metamorphic →
Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6-7 (Zoisite) to 9 (Ruby spots); Color: Bright green with black speckles (Hornblende); Luster: Vitreous to pearly; Crystal structure: Orthorhombic; Specific gravity: 3.35
Formation & geological history
Formed through regional metamorphism of igneous rock. Most specimens originate from the Mundarara Mine in Tanzania, dated to the Neoproterozoic Era.
Uses & applications
Primarily used for lapidary work including ornamental carvings, cabochons for jewelry, and as a popular specimen for mineral collectors.
Geological facts
The name 'Anyolite' is derived from the Maasai word 'anyoli', which means green. It is a unique combination of minerals found together in a single rock matrix.
Field identification & locations
Identify by its distinctive combination of vivid green zoisite and black pargasite/hornblende. It is almost exclusively found in Tanzania, making location a key identifier.
More like this
