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Thortveitite is a rare
mineral consisting of
scandium yttrium silicate (Sc,Y)2Si2O7. It is the
primary source of scandium.
Occurrence is in
granitic pegmatites...
- and
Madagascar such as
thortveitite, euxenite, and
gadolinite are the only
known concentrated sources of this element.
Thortveitite can
contain up to 45%...
- of 2:7. The Nickel–Strunz
classification is 09.B.
Examples include:
Thortveitite – (Sc,Y)2(Si2O7)
Hemimorphite (calamine) – Zn4(Si2O7)(OH)2·H2O Lawsonite...
- Thomasclarkite-(Y)
Thomsenolite Thomsonite (series of zeolites)
Thorianite Thorite Thortveitite Tiemannite Tienshanite Tilleyite Tin
Tinaksite Tincalconite Titanite...
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minerals from
Scandinavia and
Madagascar such as gadolinite, euxenite, and
thortveitite are the only
known concentrated sources of this element, the
latter containing...
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scandium produced by the
mining industry. Scandium-rich ores, such as
thortveitite (Sc,Y)2(Si2O7) and
kolbeckite ScPO4·2H2O are rare,
however trace amounts...
- Tssp
Tondiite Ton
Troilite Tro
Tuscanite Tus
Taramite Trm
Terskite Ter
Thortveitite Tvt
Tongbaite Tgb
Trolleite Tll
Tusionite Tsn
Taranakite Tar Tertschite...
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polymorph of SiO2), in Ph3Si–O–SiPh3, and in the [O3Si–O–SiO3]6− ion in
thortveitite, Sc2Si2O7. It
increases progressively from 133° to 180° in Ln2Si2O7 as...
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tetrachloride – SiCl4
Silicon tetrafluoride – SiF4
Silicon tetraiodide – SiI4
Thortveitite – (Sc,Y)2Si2O7 Silver(I)
fluoride – AgF Silver(II)
fluoride – AgF2 Silver...
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scandium and fluorine. It is also
formed during the
extraction from the ore
thortveitite by the
reaction of Sc2O3 with
ammonium bifluoride at high temperature:...
