Beryl as indicator of metasomatic processes in the California Blue Mine topaz-beryl pegmatite and associated miarolitic pockets
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DOI: 10.1016/j.lithos.2021.106485
Abstract: Abstract Beryl occurs in a wide variety of rare-element pegmatites and has provided significant insights into their evolution. The geochemical signatures of beryl can record igneous and metasomatic processes but rarely could they be studied… read more here.
Keywords: beryl; associated miarolitic; chemistry; topaz ... See more keywords
Single crystal elasticity of natural topaz at high-temperatures
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DOI: 10.1038/s41598-017-17856-3
Abstract: Topaz is an aluminosilicate mineral phase stable in the hydrothermally altered pegmatitic rocks and also in subducted sedimentary lithologies. In nature, topaz often exhibits solid solution between fluorine and hydrous end members. We investigated elasticity… read more here.
Keywords: elasticity; temperature; single crystal; topaz ... See more keywords
Experiential meaning potential in the Topaz Energy logo: a framework for graphemic and graphetic analysis of graphic logo design
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DOI: 10.1080/10350330.2016.1187880
Abstract: ABSTRACT Based on the premise that corporate logos are all pervasive in the semiotic landscapes of the post-industrial, globalized world order, the article contends that there is an increasing need for understanding how logos make… read more here.
Keywords: article; framework; logo; topaz ... See more keywords
Long‐term safety and efficacy results in hepatitis C virus genotype 1‒infected patients receiving ombitasvir/paritaprevir/ritonavir + dasabuvir ± ribavirin in the TOPAZ‐I and TOPAZ‐II trials
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DOI: 10.1111/jvh.13261
Abstract: The 3‐DAA regimen consisting of ombitasvir/paritaprevir/ritonavir plus dasabuvir (OBV/PTV/r + DSV) ± ribavirin (RBV) has shown high sustained virologic response rates (~95%) in phase 3 clinical trials including >2300 HCV genotype 1–infected patients. Real‐world evidence… read more here.
Keywords: topaz topaz; long term; ombitasvir paritaprevir; genotype ... See more keywords
Effects of fluorine content on the elastic behavior of topaz [Al2SiO4(F,OH)2]
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DOI: 10.2138/am-2017-5668
Abstract: Abstract In this work, we modeled the structure, the compressional behavior and the physical properties of topaz over six different fluorine contents and a wide range of pressure, using a quantum mechanical approach based on… read more here.
Keywords: effects fluorine; behavior topaz; content elastic; topaz ... See more keywords
A Cr3+ luminescence study of natural topaz Al2SiO4(F,OH)2 up to 60 GPa
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DOI: 10.2138/am-2019-7079
Abstract: Abstract Topaz [Al2SiO4(F,OH)2] is a subduction-related mineral that is found in metasediments and has a large pressure and temperature stability field. Here, we use luminescence spectroscopy of Cr3+ to probe the Al site in topaz… read more here.
Keywords: topaz; luminescence; topaz al2sio4; gpa ... See more keywords