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Yofortierite

Named for Yves Oscar Fortier, the former director of the Geological Survey of Canada from 1964 to 1972. Found most notably from Mont Saint-Hilaire in Canada and the Lovozero Massif in Russia, Yofortierite occurs as “a late-stage hydrothermal mineral in pegmatite veins” such as at Mont Saint-Hilaire.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/yofortierite.pdf
- Formula
- Mn2+5Si8O20(OH)2ยท8-9H2O
- Crystal System
- Monoclinic
- Crystal Habit
- Radial, Acicular
- Color
- violet brown, light violet, pink
- Streak
- light pink
- Class
- Monoclinic - Domatic
- Fracture
- Elastic
- Hardness
- 2.5
- WebMineral
- View Yofortierite
- Mindat
- View Yofortierite
Yofortierite from Pegmatite #61, Karnasurt Mt., Lovozero Massif, Kola Peninsula, Russia

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