Birefringence Table for Identification of Minerals in Petrographic Section
DOI:
https://doi.org/10.11137/1982-3908_2024_47_64136Keywords:
Colors, Millimicron, Optical characterAbstract
The minerals have great importance through deposits, being widely used in the more traditional fields of geology (economic geology, prospecting, sedimentology, petrology / petrography). The aim of this research was the elaboration of a birefringence table, using only the optical properties, for a faster, safer, and more succinct identification of some important minerals in a petrographic section (0.03 mm), focusing on the most efficient characteristics and using the addition and subtraction colors related to birefringence, in which most of those analyzed are heavy minerals, as well as other very common minerals. The table prepared for this paper has two differential characteristics, which make it efficient. Updated values from birefringence in several minerals; plus, each combination color that could be visualized trough the accessory of 530 millimicron. Due to its ease and precision of use, it can be used by researchers, professionals and undergraduates. The table containing 42 common minerals, with the information on each of their character of optical signal, colors with quartz accessories, pleochroism, and the most relevant characteristic was chosen to facilitate the identification of such minerals.
References
Addad, J.E. 2001, Minerais pesados: uma ferramenta para prospecção, proveniência, paleogeografia e análise ambiental, Edição Independente.
Arem, J.E., Clark, D. 2022, International Gem Society (IGS), viewed 1 November 2022, <https://www.gemsociety.org/>.
BLOSS, F.D. 1999, Optical crystallography, Mineralogical Society of Amer, United States of America.
Calliari, L.J., Fischler, C.T. & Berquist, C.R. 1990, ‘Heavy mineral variability and provenance of the Virginia inner shelf and lower Chesapeake Bay’, in Virginia Institute of Marine Science, Virginia Division Of Mineral Resources, Charlottesville, pp. 103-24.
Deer, W.A., Howie, R.A. & Zussman, J. 2010, Minerais Constituintes das Rochas: uma Introdução, Fundação Calouste Gulbenkian, Lisboa.
Feo-Codecido, G. 1956, ‘Heavy mineral techniques and their application to Venezuela stratigraphy’, American Association of Petroleum Geologists, vol. 40, pp. 985-1000.
Flint, E. 1965, Princípios de Cristalografia, Editorial Paz.
Frank, H.T. 2018, Guia de Minerais Transparentes ao Microscópio Petrográfico.
Fujimori, S., Ferreira, Y.A. 1987, Introdução ao uso do microscópio petrográfico, 2nd edn, Centro Editorial e Didático da UFBA, Salvador.
Grimble, C.D. & Hall, A.J. 1992, Optical mineralogy: Principles & practice, UCL Press, London, England.
Henrich, E.W. 1965, Microscopic identification of minerals, McGraw Hill Inc, New York.
Kerr, P.F. 1987, Optical mineralogy, 2nd edn, McGraw Hill Inc, New York.
Klein, C. & Dutrow, B. 2012, Manual do Ciência dos Minerais, 23rd edn, Bookman, Porto Alegre.
Krumbein, W.C. & Pettijohn, F. 1938, Manual of Sedimentary Petrography, Appleton-Century Crofts, New York.
Krumbein, W. & Sloss, L. 1963, Stratigraphy and Sedimentation, W.H. Freeman and Co., San Francisco.
Machado, F.B. & Nardy, A.J.R. 2016, Mineralogia Óptica, Oficina de Textos, São Paulo.
Nesse, W.D. 2004, Introduction to Optical Mineralogy, 3rd edn, Oxford Univesity Press, New York.
Raith, M.M., Raase, P. & Reinhardt, J. 2014, Guia para microscopia de minerais em lâminas delgadas. trans. M.C. Gastal & M.E.B. Gomes.
Schumann, W. 2020, Gemstones of the world, Sterling Editora, New York.
Suguio, K. 1980, Rochas sedimentares: propriedades, gênese e importância econômica, Edgard Blücher, São Paulo.
Wahistrom, E.E. 1969, Cristalografia óptica, Ao Livro Técnico, Rio de Janeiro.
Zukov, V. 1967, General Petrography, Editora Nedra, Moscou.
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