Abstract
This paper deals with a simplified procedure for classification of rock-forming chlorites based on chemical data obtained from electron microprobe analyses (EMPA). The proposed chlorite nomenclature does not include any new mineral name. The procedure gives the rules for determination of chlorite types (I and II), and adjectival modifiers (Mg-chlorite, Fe-chlorite, Al-chlorite).
Riassunto
Viene qui presentata una semplice procedura utile alla classificazione delle cloriti sulla base di dati chimici ottenuti mediante microsonda elettronica (EMPA). La procedura proposta permette di determinare il tipo di clorite (I e II) e un nome appropriato, senza tuttavia introdurre una nuova terminologia.
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References
Bailey S. W., 1980.Summary of recommendations of AIPEA Nomenclature Committee. Clays and Clay Minerals, 15: 85–93.
Bayliss P., 1975.Nomenclature of the trioctahedral chlorite. Can. Mineral., 13: 178–180.
Brindley G. W., Gillery F. H., 1956.X-ray identification of chlorites species. Am. Miner., 41: 169–186.
Dyar M. D., Guidotti C., Harper G., Mc Kibben M., Saccocia P., 1992.Controls on ferric iron in chlorite. Geol.Soc.Am., Abstract with Programs, 24: 130.
Fleischer M., 1971.Glossary of mineral species. Mineral. Record, Maryland.
Foster M. D., 1962.Interpretation of the composition and a classification of the chlorites. U.S. Geol. Surv. Prof. Paper 414-A: 1–33.
Franceschelli M., Mellini M., Memmi I., Ricci C. A., 1989.Sudoite, a rock-forming mineral in Verrucano of the Northern Apennines (Italy) and the sudoite-chloritoid-pyrophyllite assemblage in prograde metamorphism. Contrib. Mineral. Petrol., 101: 274–279.
Guidotti C. V., Teichmann F., Henry D. J., 1991.Chlorite-bearing polymetamorphic metapelites in the Rangely area, Maine: Evidence for equilibrium assemblages. Am. Miner., 76: 867–879.
Hey M. H., 1954.A new review of the chlorites. Mineral. Mag., 30: 277–292.
Kretz R., 1983.Symbols for rock-forming minerals. Am. Miner., 68: 277–279.
Lapham D. M., 1958.Structural and chemical variation in chromium chlorite. Am. Miner., 43: 921–956.
Orcel J., 1926.Essai de classification des chlorites. Acad. Sci. (Paris) Comptes Rendus, 183: 363–582.
Orcel J., Callière M. S., Hénin S., 1950.Nouvel essai de classification des chlorites. Mineral. Mag., 29: 329–340.
Serdyuchenko D. P., 1953.Khlority, ikh khimicheskaya konstitutsiya i klassifikatsiya. Trudy Inst. Geol. Nauk. AN SSSR, 140.
Tschermak G., 1890.Die Chloritgruppe. Sitzungsber. K. Akad. Wiss. Wien, Abt. I, 99: 174–266.
Tschermak G., 1891.Die Chloritgruppe. Sitzungsber. K. Akad. Wiss. Wien, Abt. I, 100: 29–107.
Weiss Z., 1991.Interpretation of chemical composition and X-ray diffraction patterns of chlorites. Geologica Carpathica, 42, 2: 93–104.
Wiewiora A., Weiss Z., 1990.Crystallochemical classifications of phyllosilicates based on the unified system of projection of chemical composition: II. The chlorite group. Clay Minerals, 25: 83–92.
Winchell A. N., 1936.A third study of chlorite. Am. Miner., 21: 642–651.
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Nella seduta del 12 dicembre 1997.
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Zane, A., Weiss, Z. A procedure for classifying rock-forming chlorites based on microprobe data. Rend. Fis. Acc. Lincei 9, 51–56 (1998). https://doi.org/10.1007/BF02904455
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DOI: https://doi.org/10.1007/BF02904455
