Mineral Species containing Germanium (Ge)

Element Properties, Isotopic Compositions for Germanium

**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 Units
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

Germanium (Ge) Minerals sorted by Descending Weight Percent

Click here for List sorted by Mineral Name

**30 Minerals containing Germanium (Ge) sorted by Descending Weight Percent**
% 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)2 O[(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 )·12H2 O	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[GeO2(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

( Bold - Valid Mineral Name)
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(? - IMA Discredited Mineral Species Name)
(# - Grandfathered as valid)