Mineral Species containing Gadolinium (Gd)

Element Properties, Isotopic Compositions for Gadolinium

**Gadolinium (Gd) Element Properties**
Atomic Mass	157.25
Atomic Number	64
Name Origins	Named after J. Gadolin, a Finnish chemist.
Year Discovered	1880
Discovery Credits	Discovered by J. C. Galissard de Marignac at Geneva, Switzerland. Isolated in 1886 by P. E. Lecoq de Boisbaudran at Paris, France.
Remarks	Silvery-white metal of rare earth group. Reacts slowly with oxygen and water, dissolves in acids. Used in magnets, electronics, neutron radiography, and alloys, with iron for magneto-optic recording devices. Diagnostic tests: There are no simple diagnostic tests to identify gadolinium. X-ray fluorescence spectroscopy is commonly employed to identify and analyze members of the Rare-Earth group 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 %
Gd	151.919786	152	64	0.2000%	110 x 10¹²	years	alpha	2.24	100.0%
Gd	153.920861	153	64	2.1800%		Stable
Gd	154.922618	154	64	14.8000%		Stable
Gd	155.922118	155	64	20.4700%		Stable
Gd	156.923956	156	64	15.6500%		Stable
Gd	157.924099	157	64	24.8400%		Stable
Gd	159.927049	159	64	21.8600%		Stable

Gadolinium (Gd) Minerals sorted by Descending Weight Percent

Click here for List sorted by Mineral Name

**31 Minerals containing Gadolinium (Gd) sorted by Descending Weight Percent**
% Gd	Mineral Name	Chemical Formula	MW
14.21 % Gd	Monazite-(Sm) !	SmPO4	221.25
11.08 % Gd	Churchite-(Dy) *	(Dy,Sm,Gd,Nd)(PO4)·2(H2O)	283.93
6.78 % Gd	Schuilingite-(Nd) #	PbCu(Nd,Gd,Sm,Y)(CO3)3(OH)·1.5(H2O)	696.16
4.46 % Gd	Mineevite-(Y)	Na25Ba(Y,Gd,Dy)2(HCO3)4(CO3)11(SO4)2ClF2	2,115.35
3.99 % Gd	Decrespignyite-(Y) !	(Y,REE)4Cu(CO3)4Cl(OH)5·2(H2O)	867.49
3.84 % Gd	Caysichite-(Y)	Y2(Ca,Gd)2Si4O10(CO3)3(H2O,O,OH)·3H20	819.17
2.73 % Gd	Aluminocerite-(Ce) !	(Ce,REE,Ca)9(Al,Fe+++)(SiO4)3[SiO3(OH)]4(OH)3	1,725.28
2.52 % Gd	Levinsonite-(Y) !	(Y,Nd,La)Al(SO4)2(C2O4)·12(H2O)	623.48
2.18 % Gd	Hingganite-(Y)	Y2([ ])Be2Si2O8(OH)2	433.65
2.13 % Gd	Percleveite-(Ce) !	(Ce,La,Nd)2Si2O7	442.72
1.91 % Gd	Pyatenkoite-(Y) !	Na5(Y,Dy,Gd)TiSi6O18·6(H2O)	821.63
1.84 % Gd	Lepersonnite-(Gd)	CaGd2(UO3)24(CO3)8(SiO4)4O4·60(H2O)	8,909.01
1.83 % Gd	Adamsite-(Y) !	NaY(CO3)2·6(H2O)	344.24
1.76 % Gd	Kamotoite-(Y)	(Y,Nd,Gd)2U++++++4(CO3)3O12·14.5(H2O)	1,790.08
1.65 % Gd	Kozoite-(La) !	La(CO3)(OH)	190.98
1.05 % Gd	Moskvinite-(Y) !	Na2K(Y,REE) [Si6O15]	598.41
1.00 % Gd	Iwashiroite-(Y) !	YTaO4	313.16
0.92 % Gd	Bussyite-(Ce) !	(Ce,REE)3(Na,H2O)6MnSi9Be5(O,OH)30F4	1,329.21
0.92 % Gd	Chukhrovite-(Nd) !	Ca3(Nd,Y)Al2(SO4)F13·12(H2O)	857.24
0.73 % Gd	Paratooite-(La) !	REE3(Ca,Sr)2NaCu(CO3)8	2,146.77
0.66 % Gd	Fluorcalciobritholite !	(Ca,REE)5[(Si,P)O4]3F	710.23
0.54 % Gd	Uedaite-(Ce) !	Mn++CeAl2Fe++(Si2O7)(SiO4)O(OH)	584.87
0.50 % Gd	Samarskite-(Yb) !	(Yb,Y,REE,U,Th,Ca,Fe++) (Nb,Ta,Ti)O4	312.29
0.44 % Gd	Agardite-(Ce) !	(Ce,Ca)Cu6(AsO4)3(OH)6·3(H2O)	1,070.95
0.28 % Gd	Johnsenite-(Ce) !	Na12(Ce,REE,Sr)3Ca6Mn3Zr3W(Si25O73)(CO3)(OH,Cl)2	3,374.09
0.17 % Gd	Cerite-(La) !	(La,Ce,Ca)9(Mg,Fe+++)(SiO4)6[SiO3(OH)](OH)3	1,825.93
0.14 % Gd	Vastmanlandite-(Ce) !	(Ce,La)3CaAl2Mg2[Si2O7][SiO4]3F(OH)2	1,094.51
0.14 % Gd	Plumboagardite !	(Pb,REE,Ca)Cu6(AsO4)3(OH)6·3(H2O)	1,097.39
0.10 % Gd	Piergorite-(Ce) !	Ca8Ce2(Al0.5 Fe+++0.5)([ ],Li,Be)2Si6B8O36(OH,F)2	1,498.89
0.07 % Gd	Hingganite-(Ce)	(Ce,Ca)2([ ],Fe)Be2Si2O8[(OH),O]2	460.63
0.03 % Gd	Dissakisite-(La) !	(Ca,Fe++,Th, La)(La,REE,Ca)(Al,Cr,Ti)2(Mg,Fe,Al)Si3O12(OH,F) with La > Ce	551.33

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