Mineral Species sorted by the element Ge Germanium (original) (raw)

Germanium (Ge) Element Properties

Atomic Mass 72.61
Atomic Number 32
Name Origins Latin, Germania = "Germany."
Year Discovered 1886
Discovery Credits C. A. Winkler at Freiberg, Germany.
Remarks Ultra pure it is a silvery white brittle metalloid element. Stable in air and water, unaffected by acids, except nitric, and alkalis. Used in semiconductors, alloys, and special glasses for infrared devices.Diagnostic tests: there are no simple chemical tests for germanium. Atomic 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 %
Ge 69.92425 70 32 20.5000% Stable
Ge 71.922079 72 32 27.4000% Stable
Ge 72.923463 73 32 7.8000% Stable
Ge 73.921177 74 32 36.5000% Stable
Ge 75.921401 76 32 7.8000% Stable

Mineral Species sorted by the element Ge (Germanium )

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%Ge Mineral Name Chemical Formula MW
69.41%Ge Argutite GeO2 104.61
53.91%Ge Eyselite ! Fe+++Ge++++3O7(OH) 401.40
45.27%Ge Otjisumeite PbGe4O9 641.63
35.78%Ge Bartelkeite PbFe++Ge3O8 608.87
31.50%Ge Stottite Fe++Ge(OH)6 230.50
24.49%Ge Carboirite-III Fe++Al2GeO5(OH)2 296.43
23.59%Ge Krieselite ! (Al,Ga)2(Ge,C)O4(OH)2 230.81
22.36%Ge Carboirite-VIII Fe++(Al,Ge)2O[(Ge,Si)O4](OH)2 292.20
22.31%Ge Brunogeierite (Ge++,Fe++)Fe+++2O4 244.11
18.57%Ge Briartite Cu2(Zn,Fe)GeS4 390.97
16.49%Ge Barquillite ! Cu2CdGeS4 440.38
13.42%Ge Schaurteite Ca3Ge++++(SO4)2(OH)6•3(H2O) 541.06
10.83%Ge Carraraite ! Ca3Ge(OH)6(SO4)(CO3)•12H2O 670.75
10.79%Ge Maikainite ! Cu20(Fe,Cu)6Mo2Ge6S32 3,296.63
10.15%Ge Germanocolusite Cu13V(Ge,As)3S16 1,609.66
10.03%Ge Polkovicite (Fe,Pb)3(Ge,Fe)1-xS4 470.48
9.86%Ge Ovamboite ! Cu20(Fe,Cu,Zn)6W2Ge6S32 3,470.24
9.78%Ge Morozeviczite (Pb,Fe)3Ge1-xS4 705.33
9.10%Ge Germanite Cu26Fe4Ge4S32 3,192.14
7.89%Ge Catamarcaite ! Cu6GeWS8 902.31
7.76%Ge Putzite ! (Cu4.7Ag3.3)GeS6 925.86
7.62%Ge Itoite Pb3[**Ge**O2(OH)2](SO4)2 952.35
7.21%Ge Fleischerite Pb3Ge(SO4)2(OH)6•3(H2O) 1,006.40
6.58%Ge Renierite (Cu,Zn)11(Ge,As)2Fe4S16 1,655.51
6.44%Ge Argyrodite Ag8GeS6 1,127.95
5.60%Ge Calvertite ! Cu5Ge0.5S4 495.06
2.90%Ge Tsumgallite ! GaO(OH) 100.05
2.71%Ge Mathewrogersite Pb7(Fe,Cu)Al3GeSi12O36•(OH,H2O)6 2,678.79
1.30%Ge Colusite Cu12-13V(As,Sb,Sn,Ge)3S16 1,673.29
0.32%Ge Cadmoindite ! CdIn2S4 460.83

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

There are 30 minerals with Ge in the Mineralogy Database.