Scandium

scandium

thortveitite

euxenite

gadolinite

Images

Symbol: Sc
Element, transition metal and rare earth, does not occur naturally in the native state
Specific gravity: 3.0
Colour: Silvery white
Solubility: Scandium reacts with many acids
Melting point: 1540oC
Boiling point: 2830oC
Abundance in the Earth’s crust: 22 parts per million by mass, 10 parts per million by moles (ChC)
Abundance in the Solar System: 40 parts per billion by mass, 1 part per billion by moles (ChC)
When present in compounds, scandium exists usually in the trivalent state, Sc3+.
thortveitite, euxenite-(Y) and gadolinite are the only known concentrated sources of the element (the chemical formulae for euxenite-(Y) and gadolinite, however, do not contain essential scandium).
Naturally occurring scandium consists of its one stable isotope, 45Sc, although 13 other isotopes are known (ChC).

Scandium-bearing minerals are not many; only 19 valid species contain essential scandium; they include:

Oxides
nioboheftetjernite
shakhdaraite-(Y)

Phosphates
kolbeckite

Sorosilicates
thortveitite

Back to Minerals