Mineralpedia Details for Donpeacorite
Donpeacorite
Named for mineralogist Dr. Donald R. Peacor of the University of Michigan in Ann Arbor, Michigan, USA, who studied pyroxenes and manganese minerals. Donpeacorite is a rare mineral that can be found in its type locality at the ZCA No. 4 mine at Balmat in New York, USA, at the Tatehira mine in Hokkaido, Japan, at Bulaydah in the Semail Ophiolite in Oman, and in the United Arab Emirates. It occurs in manganese and silicon rich marbles that have been metamorphosed to the upper amphibolites facies at its type locality.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/donpeacorite.pdf
- Formula
- Mn2+MgSi2O6
- Crystal System
- Orthorhombic
- Cleavage
- Perfect, None, None
- Luster
- Vitreous (Glassy)
- Color
- yellow orange
- Class
- Orthorhombic - Dipyramidal
- Hardness
- 5-6
- WebMineral
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- Mindat
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Donpeacorite from Balmat, St. Lawrence Co., New York, United States
- Special Info
- Type Locality
Orange crystal grains throughout matrix with Turneaureite.
Click thumbnail images for larger view.
