Thortveitite
From Infogalactic: the planetary knowledge core
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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
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- Webmineral
- Mindat
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