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Distinguishing natural Tibetan copper-bearing andesine from its diffusion-treated counterparts using advanced analytical methods
- Available as
- Online
- Physical
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- Creator
- [editor, A. Peretti.]
- Format
- Books
- Language
- English
- Contributors
- Publication
-
- Lucerne, Switzerland : GRS Gemresearch Swisslab AG ; Bangkok, Thailand : Distributor, GRS (Thailand) Co., 2011
- Physical Details
-
- 105 pages : illustrations (chiefly color), color map ; 31 cm
- ISBNs
- 9783952386705, 3952386707
- OCLC
- ocn767884370
- Cover title.
- Includes bibliographical references (pages 103-104).
- Also issued online.
- Introduction -- Copper-bearing andesine from Tibet -- Map of Tibet (China) with the major reported Tibetan andesine occurrences at the "new mines" (Zha lin, Yu Lin Gu, Gyaca) and "old mines" (Bainang) -- Mine locations (Fig. An04) -- GRS expedition : the Potala Palace, landmark in Lhasa, capital of Tibet (China) -- Expedition of GRS to a collection point of copper-andesine in Tibet (Gyaca) : clips are from the movie shown in Tucson at the GILC meeting in January 2011 -- The so-called "old mines" copper-bearing andesine occurrence at Bainang (Tibet) -- The "sunstone" (copper-bearing labradorite) occurrences of Oregon (USA) -- Mining operations at the Dust Devil Mining Company (DDMC) in Oregon (USA) -- Comparison of two reported mining operations in Tibet and Oregon -- Copper-bearing labradorite (sunstone) from Oregon -- Sample source verification -- Fluid inclusions in a copper-bearing andesine from Gyaca (Tibet) -- Structure model of copper-bearing andesine from Tibet -- Lattice-parameters of feldspar from different provenances (treated and untreated) including copper-bearing andesine from Tibet -- Conclusion crystallography -- LA-ICP-MS analyses -- Concentration profiles natural Tibetan andesine -- Diffusion-treated copper-bearing andesine samples of Chinese origin -- Concentration profiles of diffusion-treated copper-bearing andesine determined by LA-ICP-MS -- Concentration profiles of sunstone from Oregon by LA-ICP-MS -- Ag-Cu- and Li-Cu-discrimination diagram for natural andesine, diffusion-treated andesine and sunstone from Oregon -- Ni-Cu- and Ba/Sr versus Ba/Li discrimination diagram and conclusion LA-ICP-MS analysis -- Fluid inclusion analysis by LA-ICP-MS -- Analysis of individual fluid inclusions in andesine from Gyaca by LA-ICP-MS -- Results of fluid inclusion analysis by LA-ICP-MS -- Scanning electron microscopy (SEM-EDX) analysis -- Raman analysis of surface particles -- Raman spectra of inclusions (anatase, calcite and alpha-quartz) in an andesine from the Bainang mine (Tibet) -- Radiogenic argon measurements of copper-bearing feldspar -- Argon degassing patterns -- Noble gas laboratory at the Institute of Geology, University of Berne (Switzerland) -- K-Ar age determinations -- Results Argon testing -- K-Ar ages of feldspars from Tibet, Oregon, Mexico and Inner Mongolia -- IR-UV-fs-MC-ICP-MS instrumentation at the Research Group for "Trace Element and Micro Analysis" at the ETH Zurich, Switzerland -- Copper isotope ratio analysis of copper-bearing andesine : definitions and results -- Copper isotope ratio measurements on diffusion treated samples (Xian, Shenzhen) using femtosecond laser ablation-MC-ICP-MS -- Copper isotope ratio measurements on natural Tibetan samples (Gyaca) using femtosecond laser ablation-MC-ICP-MS -- Copper isotope ratio measurements on natural Tibetan samples (Yu Lin Gu) using femtosecond laser ablation-MC-ICP-MS -- Conclusion copper isotope ratio measurements -- Interpretation of authenticity of Tibetan red andesine -- Inclusion features in treated copper-bearing andesine -- Microphotography of experimentally diffusion-treated Inner Mongolia andesine -- Tab. An06-An13 chemical compositions -- Literature -- About the authors and acknowledgements