Mineral Species sorted by the element Ta Tantalum

Mineral Chemistry

Tantalum (Ta )

Atomic Mass	180.9479
Atomic Number	73
Name Origins	Greek, Tantalos = father of Niobe.
Year Discovered	1802
Discovery Credits	Discovered by A. G. Eceberg at Uppsala, Sweden.
Remarks	Shiny, silvery metal, soft when pure. Very corrosion resistant due to oxide film; attacked by HF and fused alkalis. Used in electronics as tantalum capacitors, cutting tools, chemical plants and surgery. Diagnostic tests: There are no simple tests to detect tantalum. Most flux reactions are not very good. Absorption Spectroscopy is used for quantitative analysis and Energy Dispersive Analysis of X-rays (EDAX) is used for qualitative analysis.
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 %
Ta	179.947462	180	73	0.01200%		Stable
Ta	180.947992	181	73	99.9800%		Stable
Ta	181.950149	182	73	0.0000%	114.5	Days	beta -	1.811	100.00%

Mineral Species sorted by the element Ta (Tantalum )

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%Ta	Mineral Name	Chemical Formula	MW
100.00% Ta	Tantalum *	Ta	180.95
93.78% Ta	Tantalcarbide !	TaC	192.96
81.90% Ta	Tantite	Ta2O5	441.89
80.09% Ta	Lithiowodginite	LiTa3O8	677.78
76.53% Ta	Natrotantite	Na2Ta4O11	945.76
76.24% Ta	Tantalowodginite *	(Mn2,[])4Ta4Ta8O32	2,848.17
74.45% Ta	Sosedkoite	(K,Na)5Al2(Ta,Nb)22O60	5,030.82
70.57% Ta	Manganotantalite	MnTa2O6	512.83
70.44% Ta	Ferrotantalite	Fe++Ta2O6	513.74
70.23% Ta	Irtyshite	Na2(Ta,Nb)4O11	901.74
69.87% Ta	Kimrobinsonite	Ta(OH)3(O,CO3)	258.97
68.76% Ta	Ferrotapiolite	(Fe++,Mn++)(Ta,Nb)2O6	500.02
68.41% Ta	Microlite	(Na,Ca)2Ta2O6(O,OH,F)	529.02
66.55% Ta	Lithiotantite	Li(Ta,Nb)3O8	611.75
66.54% Ta	Alumotantite	AlTaO4	271.93
66.33% Ta	Parabariomicrolite	BaTa4O10(OH)2·2H20	1,091.16
65.67% Ta	Tapiolite *	(Fe,Mn)(Ta,Nb)2O6	495.95
64.33% Ta	Bariomicrolite	Ba(Ta,Nb)2(O,OH)7	506.31
63.93% Ta	Ungursaite ?	NaCa5(Ta,Nb)24O65(OH)	5,094.85
63.73% Ta	Manganotapiolite	(Mn++,Fe++)(Ta,Nb)2O6	482.71
63.45% Ta	IMA1998-018 !	(Na,Ca,Bi)2Ta2O6F	570.32
62.76% Ta	Thoreaulite	Sn++Ta2O6	576.60
62.23% Ta	IMA2000-026 !	(Mn,Li)4(Ta,Sn)4(Ta,Nb)8O32	2,616.79
60.96% Ta	Ferrotitanowodginite !	Fe++TiTa2O8	593.62
59.79% Ta	Rynersonite	Ca(Ta,Nb)2O6	453.95
59.30% Ta	Cesstibtantite	(Cs,Na)SbTa4O12	579.81
59.01% Ta	Niobocarbide !	(Nb,Ta)C	147.18
58.06% Ta	Behierite	(Ta,Nb)BO4	233.75
57.34% Ta	Rankamaite	(Na,K,Pb,Li)3(Ta,Nb,Al)11(O,OH)30	2,177.26
56.99% Ta	Wodginite	Mn++(Sn,Ta)(Ta,Nb)2O8	635.06
56.47% Ta	Ixiolite	(Ta,Nb,Sn,Mn++,Fe++)O2	160.21
56.00% Ta	Calciotantite	Ca(Ta,Nb)4O11	807.80
54.47% Ta	Ferrowodginite	Fe++SnTa2O8	664.45
54.31% Ta	Tantalaeschynite-(Y)	(Y,Ce,Ca)(Ta,Ti,Nb)2O6	499.75
54.20% Ta	Formanite-(Y)	YTaO4	333.85
54.20% Ta	Iwashiroite-(Y) !	YTaO4	333.85
53.37% Ta	Simpsonite	Al4(Ta,Nb)3O13(OH)	813.65
52.69% Ta	Tanteuxenite-(Y)	(Y,Ce,Ca)(Ta,Nb,Ti)2(O,OH)6	480.83
52.53% Ta	Cesplumtantite	(Cs,Na,Ca)2(Pb,Sb+++,Sn)3Ta8O24	2,479.94
52.15% Ta	Bismutomicrolite	(Bi,Ca)(Ta,Nb)2O6(OH)	589.91
51.06% Ta	Magnesiotantalite !	(Mg,Fe)(Ta,Nb)2O6	425.25
49.62% Ta	Titanowodginite	(Mn++,Fe++)(Ti,Sn)(Ta,Nb)2O8	583.43
49.35% Ta	Stibiotantalite	SbTaO4	366.70
46.81% Ta	Uranmicrolite	(U,Ca)2(Ta,Nb)2O6(OH)	695.81
45.99% Ta	Natrobistantite	(Na,Cs)Bi(Ta,Nb,Sb)4O12	1,101.75
45.51% Ta	Plumbomicrolite	(Pb,Ca,U)2Ta2O6(OH)	795.19
43.72% Ta	Stibiomicrolite	(Sb,Ca,Na)2(Ta,Nb)2(O,OH)7	538.04
42.86% Ta	Loranskite-(Y)	(Y,Ce,Ca)ZrTaO6(?)	464.38
41.36% Ta	Schiavinatoite !	(Nb,Ta)BO4	209.97
40.12% Ta	Yttrotantalite-(Y)	(Y,U,Fe++)(Ta,Nb)O4	315.74
38.65% Ta	Zimbabweite	Na(Pb,Na,K)2(Ta,Nb,Ti)4As+++4O18	1,498.05
38.29% Ta	Jedwabite !	Fe7(Ta,Nb)3	708.80
34.06% Ta	Stannomicrolite	(Sn++,Fe++,Mn++)(Ta,Nb,Sn++++)2(O,OH)7	637.44
33.18% Ta	Bismutotantalite	Bi(Ta,Nb)O4	436.32
30.83% Ta	Struverite	(Ti,Ta,Fe+++)O2	117.38
29.17% Ta	Vigezzite	(Ca,Ce)(Nb,Ta,Ti)2O6	372.21
27.50% Ta	Manganocolumbite	(Mn,Fe++)(Nb,Ta)2O6	394.81
25.83% Ta	Ceriopyrochlore-(Ce)	(Ce,Ca,Y)2(Nb,Ta)2O6(OH,F)	560.46
21.79% Ta	Betafite	(Ca,U)2(Ti,Nb,Ta)2O6(OH)	415.12
21.31% Ta	Scheteligite ?	(Ca,Y,Sb,Mn)2(Ti,Ta,Nb,W)2O6(O,OH)	424.56
20.35% Ta	Foordite	Sn++(Nb,Ta)2O6	444.54
19.84% Ta	Yttropyrochlore-(Y)	(Y,Na,Ca,U)1-2(Nb,Ta,Ti)2(O,OH)7	455.99
18.91% Ta	Ashanite ?	(Nb,Ta,U,Fe,Mn)4O8	574.20
18.45% Ta	Euxenite-(Y)	(Y,Ca,Ce)(Nb,Ta,Ti)2O6	392.28
16.72% Ta	Uranpyrochlore	(U,Ca,Ce)2(Nb,Ta)2O6(OH,F)	541.23
16.68% Ta	Stibiobetafite	(Sb+++,Ca)2(Ti,Nb,Ta)2(O,OH)7	433.88
16.03% Ta	Koragoite	(Mn++,Fe+++)3(Nb,Ta,Ti)2(Nb,Mn)2(W,Ta)2O20	1,241.59
15.97% Ta	IMA2004-001 !	[(REE+Y),U,Th,Ca,Fe](Nb,Ta,Ti)O4	339.93
15.36% Ta	Ishikawaite	(U,Fe,Y,Ca)(Nb,Ta)O4(?)	294.45
15.25% Ta	Yttrocolumbite-(Y)	(Y,U,Fe++)(Nb,Ta)O4	296.62
14.56% Ta	Polycrase-(Y)	(Y,Ca,Ce,U,Th)(Ti,Nb,Ta)2O6	372.96
13.89% Ta	Fersmite	(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6	390.96
13.88% Ta	Petscheckite	U++++Fe++(Nb,Ta)2O8	651.70
12.07% Ta	Samarskite-(Y)	(Y,Fe+++,U)(Nb,Ta)5O4	299.85
11.66% Ta	Bismutocolumbite	Bi(Nb,Ta)O4	387.89
10.95% Ta	Magnesiocolumbite	(Mg,Fe++,Mn)(Nb,Ta)2O6	330.49
10.48% Ta	Holtite	Al6(Al,Ta)(BO3)[(SiO4,SbO4,AsO4)]3(O,OH)3	2,589.58
9.39% Ta	Liandratite	U++++++(Nb,Ta)2O8	578.25
8.64% Ta	Olmsteadite	KFe++2(Nb,Ta)(PO4)2O2·2(H2O)	523.68
8.04% Ta	Bismutopyrochlore !	(Bi,U,Ca,Pb)1+x(Nb,Ta)2O6(OH)·n(H2O)	562.81
7.45% Ta	Wolframoixiolite *	(Fe,Mn,Nb)(Nb,W,Ta)O4	242.98
4.35% Ta	Uranopolycrase	(U,Y)(Ti,Nb,Ta)2O6	415.77
3.76% Ta	Johnwalkite	K(Mn++,Fe+++,Fe++)2(Nb,Ta)(PO4)2O2((H2O),OH)2	480.93
3.74% Ta	Plumbopyrochlore	(Pb,Y,U,Ca)2-xNb2O6(OH)	484.00
0.83% Ta	Yttrobetafite-(Y)	(Y,U,Ce)2(Ti,Nb,Ta)2O6(OH)	437.15
0.21% Ta	Eveslogite !	(Ca,K,Na,Sr,Ba)48[(Ti,Nb,Fe,Mn)12(OH)12Si48O144](F,OH,Cl)14	6,800.28
0.21% Ta	Taseqite !	Na12Sr3Ca6Fe3Zr3NbSi25O73(O,OH,H2O)3Cl2	3,403.45
0.11% Ta	Ferrokentbrooksite !	Na15Ca6(Fe,Mn)3Zr3NbSi25O73(O,OH,H2O)3(Cl,F,OH)2	3,231.96

(! - New Dana classification added or changed from Danas New Mineralogy)

(? - IMA Discredited Mineral Species Name)

There are 88 minerals with Ta in the Mineralogy Database.