Mineral Species containing Thallium (Tl)

Element Properties, Isotopic Compositions for Thallium

**Thallium (Tl) Element Properties**
Atomic Mass	204.3833
Atomic Number	81
Name Origins	Greek, thallos = "green twig."
Year Discovered	1861
Discovery Credits	Discovered by W. Crookes at London, UK; isolated in 1862 by C. A. Lamy at Paris, France.
Remarks	Soft, silvery-gray metal. Tarnishes readily in moist air and with steam reacts to form TlOH. Attacked by acids, rapidly by HNO₃. Little used because of its toxicity, but still employed in special glasses. Diagnostic tests: Thallium and its salts are quite volatile when heated with the blowpipe and impart an intense green color to the flame test.
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 %
Tl	202.97232	203	81	29.5200%		Stable
Tl	204.97332	204	81	0.0000%	3.78	Years	beta - EC	0.763 0.345	97.00% 3.00%
Tl	204.974401	205	81	70.4800%		Stable
Tl	207.981988	208	81	00.0000%	3.053	Minutes	alpha	4.994	100.00%

Thallium (Tl) Minerals sorted by Descending Weight Percent

Click here for List sorted by Mineral Name

**54 Minerals containing Thallium (Tl) sorted by Descending Weight Percent**
% Tl	Mineral Name	Chemical Formula	MW
92.74 % Tl	Avicennite #	Tl2O3	661.15
92.73 % Tl	Carlinite	Tl2S	440.83
82.99 % Tl	Lafossaite !	Tl(Cl,Br)	252.93
78.18 % Tl	Ellisite	Tl3AsS3	784.27
75.11 % Tl	Fangite	Tl3AsS4	816.34
63.01 % Tl	Raguinite	TlFeS2	324.36
59.51 % Tl	Lorandite #	TlAsS2	343.44
54.84 % Tl	Steropesite !	Tl3BiCl6	1,077.12
52.37 % Tl	Weissbergite	TlSbS2	390.27
49.57 % Tl	Picotpaulite	TlFe2S3	412.28
47.00 % Tl	Erniggliite	Tl2SnAs2S6	869.72
42.09 % Tl	Bukovite	Tl2Cu3FeSe4	971.09
40.19 % Tl	Chalcothallite	(Cu,Fe)6Tl2SbS4	1,016.96
37.37 % Tl	Gabrielite !	Tl2AgCu2As3S7	1,082.85
35.48 % Tl	Christite	TlHgAsS3	576.09
35.29 % Tl	Thalcusite	TlCu3FeS4	579.13
34.93 % Tl	Thalfenisite	Tl6(Fe,Ni,Cu)25S26Cl	3,510.71
34.81 % Tl	Rebulite	Tl5Sb5As8S22	2,935.49
32.52 % Tl	Imhofite	Tl6CuAs16S40	3,771.23
32.24 % Tl	Jankovicite	Tl5Sb9(As,Sb)4S22	3,169.63
32.04 % Tl	Lanmuchangite !	TlAl(SO4)2·12(H2O)	637.87
29.39 % Tl	Sabatierite	Cu4TlSe3	695.45
28.87 % Tl	Rohaite	TlCu5SbS2	708.00
28.16 % Tl	Vrbaite #	Tl4Hg3Sb2As8S20	2,903.50
27.97 % Tl	Monsmedite ?	H8K2Tl2(SO4)8·11(H2O)	1,461.70
26.92 % Tl	Gillulyite	Tl2(As,Sb)8S13	1,518.65
26.85 % Tl	Stalderite	TlCu(Zn,Fe,Hg)2As2S6	761.31
25.66 % Tl	Wallisite	PbTl(Cu,Ag)As2S5	796.38
24.86 % Tl	Simonite	TlHgAs3S6	822.13
24.23 % Tl	Hephaistosite !	TlPb2Cl5	793.05
23.34 % Tl	Jentschite !	TlPbAs2SbS6	875.57
23.27 % Tl	Sicherite !	TlAg2(As,Sb)3S6	878.49
23.21 % Tl	Dorallcharite	(Tl,K)Fe+++3(SO4)2(OH)6	616.51
22.89 % Tl	Edenharterite	TlPbAs3S6	892.88
21.46 % Tl	Bernardite	Tl(As,Sb)5S8	952.59
21.13 % Tl	Routhierite	TlCu(Hg,Zn)2(As,Sb)2S3	967.16
20.94 % Tl	Pierrotite	Tl2Sb6As4S16	1,952.01
19.62 % Tl	Parapierrotite	Tl(Sb,As)5S8	1,041.56
19.02 % Tl	Hutchinsonite #	(Pb,Tl)2As5S9	1,074.79
18.31 % Tl	Vaughanite	TlHgSb4S7	1,116.44
16.29 % Tl	Crookesite #	Cu7(Tl,Ag)Se4	940.92
15.73 % Tl	Chabourneite	(Tl,Pb)21(Sb,As)91S147	18,184.75
15.40 % Tl	Cuprostibite	Cu2(Sb,Tl)	265.37
12.30 % Tl	Hatchite #	(Pb,Tl)2AgAs2S5	831.03
8.02 % Tl	Criddleite	TlAg2Au3Sb10S10	2,549.18
6.75 % Tl	Perlialite	K8Tl4Al12Si24O72·20(H2O)	3,027.26
6.39 % Tl	Sartorite #	PbAs2S4	4,479.49
4.73 % Tl	Galkhaite	(Cs,Tl)(Hg,Cu,Zn)6(As,Sb)4S12	1,727.48
2.86 % Tl	Rayite	(Ag,Tl)2Pb8Sb8S21	3,568.98
1.90 % Tl	Rathite #	Pb8Pb4-x(Tl2As2)x(Ag2As2)As16S40	5,369.42
0.61 % Tl	Pautovite !	CsFe2S3	336.73
0.54 % Tl	Wilhelmramsayite !	Cu3FeS3·2(H2O)	378.36
0.08 % Tl	Fettelite !	[Ag6As2S7][Ag10HgAs2S8]	2,720.84
0.06 % Tl	Vurroite !	Pb20Sn2(Bi,As)22S54Cl6	9,577.60

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