Ottrelite
A variety of Minerals
What is Ottrelite?
Ottrelite is a form of chloritoid. Its empirical formula is (Mn,Fe,Mg)2Al4Si2O10(OH)4.
Ottrelite Market Value Calculator
Estimate the market value of Ottrelite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Ottrelite Localities Map
See where Ottrelite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Map preview
North ZoneCentral RidgeSouth Basin
Quick Facts
Physical Properties
- Color
- Pistachio-green, greenish to dark grey
- Hardness (Mohs)
- 6 - 7
- Streak
- Greenish, greyish
Chemical Properties
- Chemical Formula
- (Mn2+,Fe2+,Mg)Al2(SiO4)O(OH)2
- Elements
- Al, Fe, H, Mg, Mn, O, Si
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