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germanium

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Journal Article
Published: 01 November 2024
American Mineralogist (2024) 109 (11): 1888–1912.
... such as gallium (Ga), germanium (Ge), and indium (In). Metamorphic conditions and dynamic recrystallization may have induced local or total redistribution of these elements. Modern techniques such as electron backscattered diffraction analyses (EBSD) and laser-induced breakdown spectroscopy (LIBS) applied...
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Journal Article
Published: 01 September 2024
American Mineralogist (2024) 109 (9): 1481–1498.
...Chen Wei; Max Frenzel; Lin Ye; Zhilong Huang; Leonid Danyushevsky Abstract Germanium (Ge) is a critical raw material for emerging high-tech and green industries, resulting in considerable recent interest in understanding its distribution and geochemical behavior in ore deposits...
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Journal Article
Published: 01 December 2023
American Mineralogist (2023) 108 (12): 2153–2163.
... ( https://henke.lbl.gov/optical_constants/atten2.html ). In the absence of a reference material for Ge, the concentration was computed indirectly using a standardless method in which As concentration served as the effective standard. Germanium fluorescence intensity was ratioed to arsenic...
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Journal Article
Journal: GSA Bulletin
Published: 27 November 2023
GSA Bulletin (2024) 136 (7-8): 2891–2905.
...Guotao Sun; Jia-xi Zhou; Alexandre Cugerone; Mei-fu Zhou; Lingli Zhou Abstract Germanium (Ge) is a critical raw material used in high-technology industry (i.e., optical industry) applications, and it is predominantly concentrated in coals and Zn-rich deposits. Previous studies on Zn-rich deposits...
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Journal Article
Published: 20 July 2023
The Canadian Journal of Mineralogy and Petrology (2023) 61 (3): 549–567.
...Lei Wang; Yan Zhang; Runsheng Han Abstract Germanium (Ge), as a critical metal, is in high demand due to its growing usage in emerging industries and green technologies. The Sichuan-Yunnan-Guizhou Zn-Pb metallogenic region, located on the southwestern margin of the Yangtze block, is one of the most...
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Journal Article
Published: 21 February 2023
The Canadian Mineralogist (2022) 60 (6): 881–912.
... of Mineralogy, Callinstraße 3, 30167 Hannover, Germany † Current address: University of Graz, Institute for Earth Sciences, Universitätsplatz 2, 8010 Graz, Austria 9 8 2021 17 3 2022 2022 economic geology hydrothermal veins Germany germanium gallium sphalerite...
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Journal Article
Published: 13 December 2021
The Canadian Mineralogist (2021) 59 (6): 1865–1886.
... Marathonite palladogermanide new mineral species platinum-group mineral germanium X-ray data crystal structure electron-microprobe data reflectance data Marathon deposit Coldwell Complex Canada Germanium is an enigmatic element, given its relative enrichment in crustal rocks (average of ∼1.6...
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Journal Article
Published: 10 November 2021
Mineralogical Magazine (2021) 85 (6): 879–889.
...Vojtěch Ettler; Martin Mihaljevič; Ladislav Strnad; Radim Jedlicka; Bohdan Kříbek; Rob J. Bowell; Fred Kamona; Ben Mapani Abstract Gallium (Ga) and germanium (Ge) are technologically important critical elements. Lead blast furnace slags from Tsumeb, Namibia, comprise over two million metric tons...
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Journal Article
Published: 08 April 2020
The Canadian Mineralogist (2020) 58 (2): 191–201.
... and pearceite were differentiated by their chemistry. Although the presence of argyrodite in epithermal deposits with silver sulfosalts is relatively common, this first mention in Cerro Moro is highly encouraging for exploration for germanium, a critical element, which is also considered strategic by countries...
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Journal Article
Journal: Geology
Published: 17 December 2019
Geology (2020) 48 (3): 236–241.
..., this study shows that plastic deformation and subsequent syntectonic recrystallization of sphalerite (zinc sulfide, ZnS) led to the spatial redistribution of germanium (Ge): from a background level of a few hundreds of parts per million in undeformed primary sphalerite to tens of weight-percent...
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Journal Article
Published: 01 September 2019
European Journal of Mineralogy (2019) 31 (5-6): 983–997.
... Verlagsbuchhandlung, 70176 Stuttgart, Germany 2019 willemite germanium non-sulphide zinc deposits critical elements supergene The supergene zone of sulphide-rich ore deposits has long been a focus for the mining industry, as fractionation processes due to weathering can lead to significant metal...
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Journal Article
Published: 01 March 2019
European Journal of Mineralogy (2019) 31 (2): 325–333.
...-rich sphalerite from the Tres Marias Zn–Pb–Ge deposit in Mexico and auriferous arsenopyrite from the Ashanti Au mine in Ghana are investigated. Sphalerite from Tres Marias contains Ge concentrations of up to 1430 μg/g and is characterised by elevated Fe contents. Germanium is homogeneously distributed...
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Journal Article
Published: 01 January 2019
Russ. Geol. Geophys. (2019) 60 (1): 86–96.
...V.I. Naidko; V.A. Makarov; D.G. Koz’min; A.F. Shimanskii; A.I. Fertikov Abstract — Integrated geological and geochemical studies were performed for lignite from the Yenisei middle reaches, represented by carbonized fragments of trees with high germanium contents. Geochemical characteristics...
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Journal Article
Published: 01 May 2018
Mineralogical Magazine (2018) 82 (S1): S89–S114.
..., goethite and hematite. Germanium occurs at ppm levels in W1 and W2, and in scarcely detectable amounts in hemimorphite, goethite and hematite. Indium has low concentrations in goethite and hematite. These different deportments among the various phases are probably due to the different initial Ga, In and Ge...
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Journal Article
Published: 01 May 2018
Mineralogical Magazine (2018) 82 (S1): S61–S87.
... of the fluids fluctuated during ore deposition suggesting different fluid pulses (system rejuvenation and/or boiling). The enrichment in Te, Se and Bi enrichment is supportive of a magmatic contribution to the ore fluid, while graphite in the metamorphic basement could be the source of germanium, although...
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Series: Geological Society, London, Special Publications
Published: 01 January 2018
DOI: 10.1144/SP435.2
EISBN: 9781786202901
...% of the Al concentration, the remaining Al needs to be balanced by H. The ratio of Li/H-compensated Al centres seems to depend on the Li activity and the pH in the aqueous solution. Germanium concentrations in quartz cements are slightly higher than the crustal average and they show a weak correlation...
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Journal Article
Published: 01 October 2017
Mineralogical Magazine (2017) 81 (5): 1151–1159.
..., Saxony, Germany; Höll et al. , 2007 ). The mineralogy and distribution of germanium at Capillitas is thus unique on a worldwide scale and represents a new mode of the occurrence of this rare metal in epithermal systems. In addition to the six mentioned Ge minerals, Ge contents up to 0.2 wt.% have been...
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Journal Article
Published: 01 July 2017
The Canadian Mineralogist (2017) 55 (4): 799–820.
... trace-elements REE germanium geological formation Euclase obtained from Ouro Preto in Brazil was studied and named by the French mineralogist René Just Haüy in 1792. Its name is derived from the Greek words “eu” and “klasis” which mean “well breaking”, referring to its perfect cleavage along...
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Journal Article
Journal: Geology
Published: 01 February 2017
Geology (2017) 45 (2): e407.
..., C.T.A., Shu, X.J., Peng, Y., Sun, Y., Tang, Z., Rong, H., Lang, X., Ma, H., and Yang, F., 2015, Germanium/silicon of the EdiacaranCambrian Laobao cherts: Implications for the bedded chert formation and paleoenvironment interpretations: Geochemistry Geophysics Geosystems, v. 16, p. 751 763, doi:10.1002...
Journal Article
Journal: Geology
Published: 01 February 2017
Geology (2017) 45 (2): e408.
...., 1998, Experimental study of the complexation of silicon and germanium with aqueous organic species: Implications for germanium and silicon transport and Ge/Si ratio in natural waters: Geochimica et Cosmochimica Acta, v. 62, p. 3413 3428, doi:10.1016/S0016-7037(98)00249X. Retallack, G.J., 1994, Were...