Mineral Species containing Lanthanum (La)

Element Properties, Isotopic Compositions for Lanthanum

**Lanthanum (La) Element Properties**
Atomic Mass	138.9055
Atomic Number	57
Name Origins	From the Greek, lanthanein = "to lie hidden."
Year Discovered	1839
Discovery Credits	Discovered by C. G. Mosander at Stockholm, Sweden.
Remarks	Soft, silvery-white metal; rapidly tarnishes in air and burns easily. Reacts with water to give hydrogen gas. Used in optical glass and for flints. La²⁺ is used as a biological tracer for calcium Ca²⁺. Diagnostic tests: There are no simple diagnostic tests to identify lanthanum. 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 %
La	137.907105	138	57	0.0900%		Stable
La	138.906346	139	57	99.9100%		Stable

Lanthanum (La) Minerals sorted by Descending Weight Percent

Click here for List sorted by Mineral Name

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**132 Minerals containing Lanthanum (La) sorted by Descending Weight Percent**
% La	Mineral Name	Chemical Formula	MW
2.55 % La	Ilmajokite	(Na,Ce,La,Ba)2TiSi3O5(OH)10·n(H2O) (?)	544.12
2.35 % La	Bussyite-(Ce) !	(Ce,REE)3(Na,H2O)6MnSi9Be5(O,OH)30F4	1,329.21
2.23 % La	Levinsonite-(Y) !	(Y,Nd,La)Al(SO4)2(C2O4)·12(H2O)	623.48
2.08 % La	Zugshunstite-(Ce) !	(Ce,Nd,La)Al(SO4)2(C2O4)·8(H2O)	667.51
2.04 % La	Graulichite-(Ce) !	CeFe+++3(AsO4)2(OH)6	680.93
2.04 % La	Kuannersuite-(Ce) !	Ba6Na2REE2(PO4)6FCl	1,704.53
1.96 % La	Hibonite #	(Ca,Ce)(Al,Ti,Mg)12O19	708.81
1.95 % La	Agardite-(Ce) !	(Ce,Ca)Cu6(AsO4)3(OH)6·3(H2O)	1,070.95
1.94 % La	Chukhrovite-(Nd) !	Ca3(Nd,Y)Al2(SO4)F13·12(H2O)	857.24
1.86 % La	Bario-olgite !	Na(Ba,Sr,Na,REE)PO4	223.77
1.86 % La	Davidite-(Ce)	(Ce,La)(Y,U)(Ti,Fe+++)20O38	1,871.41
1.65 % La	Plumboagardite !	(Pb,REE,Ca)Cu6(AsO4)3(OH)6·3(H2O)	1,097.39
1.60 % La	Carbokentbrooksite !	(Na,[ ])12(Na,Ce)3Ca6Mn3Zr3Nb(Si25O73)(OH)3(CO3)·H2O	3,121.55
1.57 % La	Crichtonite #	(Sr,La,Ce,Y)(Ti,Fe+++,Mn)21O38	1,772.61
1.36 % La	Johnsenite-(Ce) !	Na12(Ce,REE,Sr)3Ca6Mn3Zr3W(Si25O73)(CO3)(OH,Cl)2	3,374.09
1.31 % La	Agardite-(Nd) !	(Pb,Nd,Y,La,Ca)Cu6(AsO4)3(OH)6·3(H2O)	1,063.17
0.80 % La	Voronkovite !	Na15(Na,Ca,Ce)3(Mn,Ca)3Fe3Zr3Si26O72(OH,O)4Cl·H2O	3,126.11
0.61 % La	Calciopetersite !	CaCu6[(PO4)2(PO3OH)(OH)6]·3(H2O)	907.06
0.55 % La	Ikranite !	(Na,H3O)15(Ca,Mn,REE)6Fe+++2Zr3([ ],Zr)([ ],Si)Si24O66(O,OH)6Cl·2-3H2O	2,760.39
0.47 % La	Lakargiite !	CaZrO3	177.87
0.32 % La	Hingganite-(Y)	Y2([ ])Be2Si2O8(OH)2	433.65
0.32 % La	Decrespignyite-(Y) !	(Y,REE)4Cu(CO3)4Cl(OH)5·2(H2O)	867.49
0.18 % La	Kochite !	Na2(Na,Ca)4Ca4(Mn,Ca)2Zr2Ti2(Si2O7)4(O,F)4F4	1,505.08
0.15 % La	Arapovite !	(U,Th)(Ca,Na)2(K1-x[ ]x)Si8O20·H2O, x=0.5	897.66
0.15 % La	Gramaccioliite-(Y) !	(Pb,Sr)(Y,Mn)Fe2(Ti,Fe)18O38	1,822.46
0.14 % La	Golyshevite !	(Na,Ca)10Ca9(Fe+++,Fe++)2Zr3NbSi25O72(CO3)(OH)3·H2O	2,925.34
0.14 % La	Mogovidite !	Na9(Ca,Na)6Ca6Fe2Zr3[ ]Si25O72(CO3)(OH)4	3,066.24
0.10 % La	Menezesite !	Ba2MgZr4(BaNb12O42)·12H2O	2,778.48
0.09 % La	Feklichevite !	Na11Ca9(Fe+++,Fe++)2Zr3Nb[Si25O73](OH,H2O,Cl,O)5	3,038.68
0.06 % La	Apatite-(CaOH)-M !	(Ca,Na)5[(P,S)O4]3(OH,Cl)	499.72
0.04 % La	Samarskite-(Yb) !	(Yb,Y,REE,U,Th,Ca,Fe++) (Nb,Ta,Ti)O4	312.29

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