Thortveitite
From Infogalactic: the planetary knowledge core
| Thortveitite | |
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Thortveitite
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| General | |
| Category | Mineral |
| Formula (repeating unit) |
(Sc,Y)2Si2O7 |
| Identification | |
| Crystal system | orthorhombic |
| Mohs scale hardness | 5-6 |
| Luster | vitreous |
| Streak | gray |
| Specific gravity | 3.3-3.8 |
Thortveitite is a mineral consisting of scandium yttrium silicate (Sc,Y)2Si2O7. It is the primary source of scandium. Occurrence is in granitic pegmatites. It was named after Olaus Thortveit, a Norwegian engineer. It is grayish-green, black or gray in color.
A transparent gem quality example was found in 2004, and reported in "The Journal of Gemmology", 2008 Volume 31.
See also
References
- Webmineral
- Mindat
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