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Knebelite 
Summary
Knebelite is a manganese variety of the fayalite-tephroite series with formula (Fe,Mn)2SiO4. It forms dark green orthorhombic crystals. It is reported from a variety of locations in Sweden as well as South Africa, Russia, British Columbia, New Hampshire, and Rhode Island.[1]
| Knebelite | |
|---|---|
| General | |
| Category | Mineral |
| Formula (repeating unit) | (Fe,Mn)2SiO4 |
| Crystal system | Orthorhombic |
| Identification | |
| Color | dark green |
References edit
- ^ Knebelite on Mindat