Mineral Species sorted by the element Cs Cesium (original) (raw)

Cesium (Cs) Element Properties

Atomic Mass 132.9054
Atomic Number 55
Name Origins Latin, caesius = "sky blue."
Year Discovered 1860
Discovery Credits Discovered by R. Bunsen and G. R. Kirchoff at Heidelberg, Germany.
Remarks Soft, shiny, gold colored metal; reacts rapidly with oxygen and explosively with water. Used as catalyst promoter, in special glasses, and in radiation monitoring equipment. The first element to be discovered spectroscopically and forms the basis for "atomic clocks" because of the ease in which the element is ionized.Diagnostic tests: In solution, cesium will give a flame test color of a beautiful sky-blue. This flame test will be contaminated with the colors of the other alkaline elements which are present in the sample. You will probably need a diffraction spectroscope to view the two blue emission lines from cesium.
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 %
Cs 132.905429 133 55 100.0000% Stable

Mineral Species sorted by the element Cs (Cesium )

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%Cs Mineral Name Chemical Formula MW
35.92%Cs Pautovite ! CsFe2S3 336.73
34.34%Cs Ramanite-(Cs) ! Cs[B5O6(OH)4]•2H2O 387.01
27.98%Cs Pollucite (Cs,Na)2Al2Si4O12•(H2O) 285.03
27.45%Cs Sokolovaite ! CsLi2AlSi4O10F2 484.10
24.51%Cs Nanpingite Cs(Al,Mg,Fe++,Li)2(Si3Al)O10(OH,F)2 487.97
23.84%Cs Zeravshanite ! Cs4Na2Zr3(Si18O45)(H2O)2 2,118.63
22.25%Cs Avogadrite (K,Cs)BF4 149.35
17.63%Cs Mccrillisite NaCs(Be,Li)Zr2(PO4)4•1-2(H2O) 753.75
16.36%Cs Margaritasite (Cs,K,H3O)2(UO2)2V2O8•(H2O) 974.70
16.25%Cs Senekevichite ! CsKNaCa2TiO[Si7O18(OH)] 817.63
14.93%Cs Pezzottaite ! Cs(Be2Li)Al2Si6O18 658.80
13.69%Cs Kupletskite-(Cs) (Cs,K)2Na(Mn,Fe++,Li)7(Ti,Nb)2Si8O26(OH)4F 1,455.85
7.89%Cs Londonite ! CsAl4Be4(B,Be)12O28 808.60
6.88%Cs Cesstibtantite (Cs,Na)SbTa4O12 579.81
6.40%Cs Telyushenkoite ! CsNa6[Be2(Si,Al)18O39F2] 1,433.11
4.82%Cs Cesplumtantite (Cs,Na,Ca)2(Pb,Sb+++,Sn)3Ta8O24 2,479.94
4.62%Cs Galkhaite (Cs,Tl)(Hg,Cu,Zn)6(As,Sb)4S12 1,727.48
4.27%Cs Rhodizite (K,Cs)Al4Be4(B,Be)12O28 778.83
3.62%Cs Natrobistantite (Na,Cs)Bi(Ta,Nb,Sb)4O12 1,101.75
2.08%Cs Gainesite Na2Zr2Be(PO4)4•1-2(H2O) 639.49
0.91%Cs Nalivkinite ! Li2NaFe++7Ti2Si8O24(OH)4F 1,309.53
0.82%Cs Dachiardite-Ca (Ca,Na2,K2)5Al10Si38O96•25(H2O) 1,792.84

(* - Mineral Name Is Not IMA Approved)
(! - New Dana classification added or changed from Danas New Mineralogy)
(? - IMA Discredited Mineral Species Name)

There are 22 minerals with Cs in the Mineralogy Database.