Mineral Species containing Scandium (Sc)

Element Properties, Isotopic Compositions for Scandium

**Scandium (Sc) Element Properties**
Atomic Mass	44.95591
Atomic Number	21
Name Origins	From the Latin, Scandia, meaning "Scandinavia."
Year Discovered	1879
Discovery Credits	Discovered by L. F. Nilson at Uppsala, Sweden.
Remarks	Soft, silvery-white metal. Tarnishes in air and burns easily. Reacts with water to form hydrogen gas. Forms salts with acids. Little used. Diagnostic tests: There are no simple diagnostic tests to identify scandium. X-ray fluorescence spectroscopy is commonly employed to identify and analyze members of the group 3 elements.
References	Emsley, J., 1991; THE ELEMENTS : Sec. Ed., Clarendon Press, Oxford, 251 p.
See Also	WebElements, ChemiCool

**Naturally Occurring Isotopes**
Symbol	Isotope Mass	Isotope Nuclide Number	Isotope Number	Natural Abundance	Half-life	Half-life Units	Decay Mode	Decay Mode MeV	Decay Mode %
Sc	43.959404	44	21	0.0000%	3.93	Hours	beta -	3.655	100.00%
Sc	44.95591	45	21	100.0000%		Stable
Sc	45.95517	46	21	0.0000%	83.8	Days	beta -	2.367	100.00%
Sc	46.952408	47	21	0.0000%	3.42	Days	beta -	0.601	100.00%

Scandium (Sc) Minerals sorted by Descending Weight Percent

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**19 Minerals containing Scandium (Sc) sorted by Descending Weight Percent**
% Sc	Mineral Name	Chemical Formula	MW
32.13 % Sc	Pretulite !	ScPO4	139.93
24.08 % Sc	Thortveitite #	(Sc,Y)2Si2O7	280.05
23.99 % Sc	Kolbeckite #	ScPO4·2(H2O)	176.18
20.87 % Sc	Allendeite !	Sc4Zr3O12	648.47
15.51 % Sc	Heftetjernite !	ScTaO4	289.90
12.07 % Sc	Jervisite	(Na,Ca,Fe++)(Sc,Mg,Fe++)Si2O6	223.42
11.95 % Sc	Bazzite #	Be3(Sc,Al)2Si6O18	564.46
11.58 % Sc	Juonniite !	CaMgSc(PO4)2(OH)·4(H2O)	388.35
10.64 % Sc	Cascandite	Ca(Sc,Fe++)Si3O8(OH)	317.02
9.54 % Sc	Davisite !	Ca(Sc,Ti+++,Mg,Ti++++)AlSiO6	235.70
8.00 % Sc	Scandiobabingtonite !	Ca2(Fe++,Mn)ScSi5O14(OH)	562.16
5.25 % Sc	Kristiansenite !	Ca2ScSn(Si2O7)(Si2O6OH)	291.23
4.44 % Sc	Oftedalite !	(Sc,Ca)2KBe3Si12O30	973.03
1.19 % Sc	Magbasite	KBa(Al,Sc)(Mg,Fe++)6Si6O20F2	943.31
0.99 % Sc	Stavelotite-(La) !	La3Mn++3Cu++(Mn+++,Fe+++,Mn++++)26(Si2O7)6O30	3,438.35
0.25 % Sc	Lakargiite !	CaZrO3	177.87
0.17 % Sc	Samarskite-(Yb) !	(Yb,Y,REE,U,Th,Ca,Fe++) (Nb,Ta,Ti)O4	312.29
0.09 % Sc	Arrojadite-(SrFe) !	SrFe++Na2Ca(Fe++,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2	2,063.97
0.02 % Sc	Dissakisite-(La) !	(Ca,Fe++,Th, La)(La,REE,Ca)(Al,Cr,Ti)2(Mg,Fe,Al)Si3O12(OH,F) with La > Ce	551.33

( Bold - Valid Mineral Name)
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(! - New Dana Classification Number Has Been Changed or Added)
(? - IMA Discredited Mineral Species Name)
(# - Grandfathered as valid)