Badania mineralogiczno-gemmologiczne oraz mikrotermometryczne spodumenów z kopalni Nilaw (Laghman, NE Afganistan)

• Autorzy: Natkaniec-Nowak L. , Słowakiewicz M.

Warianty tytułu

EN

Mineralogical-gemological and microthermometric studies of spodumenes from the Nilaw mine (Laghman Province, NE Afghanistan)

• Języki publikacji: PL

Abstrakty

EN

The aim of the study was mineralogical-gemological and microthermometric analysis of color types of spodumenes (green spodumenes, kunzite) from the Nilaw mine (Laghman Province, Afghanistan). These minerals contain numerous fluid inclusions, both primary and secondary, as well as mineral ones. The analyses of fluid inclusion assemblages (FIA) in green spodumenes showed of temperatures of homogenization (into vapor phase) of carbon dioxide (ThCO₂) varing from 27.1 to 27.8°C and total homogenization temperatures (ThTOT) of 252–271°C. Temperature of crystallization after correction varies from 370 to 430°C and pressure - from 1.16 to 1.44 kbar. Composition of brines (in mol%): H2O = 0.93–0.94, CO2 = 0.027–0.038, NaCl = 0.029-0.032, with salinities from 4.33 to 6.59 wt.% NaCl eq. was also calculated. For FIAs in kunzite, temperatures of homogenization of carbon dioxide (ThCO2) range from 27.0 to27.3°C, whereas total temperatures of homogenization (ThTOT) is 238–250°C. Values of Tcr are 300–334°C and Pcr - 0.81–1.12 kbar. Composition of brines (in mol%) is: H₂O = 0.57–0.75, CO₂ = 0.22–0.40, NaCl ca 0.02; and salinity 4.5–5.7 wt. % NaCl eq. The obtained results show that the studied minerals precipitated from medium-temperature and low-pressure hydrothermal solutions varying in chemical composition. New Polish terminology for English equivalents regarding petrography of fluid inclusions was also proposed.

Słowa kluczowe

PL

zielone spodumeny; kunzyt; inkluzje stałe i płynne; Nilaw; Afganistan

EN

green spodumene; kunzite; solid and fluid inclusions; Nilaw; Afghanistan

• Wydawca: Państwowy Instytut Geologiczny - Państwowy Instytut Badawczy
• Czasopismo: Przegląd Geologiczny
• Rocznik: 2010
• Tom: Vol. 58, nr 5
• Strony: 416--425
• Opis fizyczny: Bibliogr. 36 poz., rys., tab., wykr.

Twórcy

autor

Natkaniec-Nowak L.

autor

Słowakiewicz M.

• Katedra Mineralogii, Petrografii i Geochemii, Wydział Geologii, Geofizyki i Ochrony Środowiska, Akademia Górniczo-Hutnicza, al. Mickiewicza 30, 30-059 Kraków,

Bibliografia

• ABDULLAH S.W.M & CHMYRIOW W.M. 1980 - Gieologia i poleznyje iskopajemyje Afganistana. Cz. II. Nierda, Moskwa.
• ANDERSON A.J., CLARK A.H. & GRAY S. 2001 - The occurrence and origin of zubuyelite (Li2CO3) in spodumene-hosted fluid inclusions: implications for the internal evolution of rare-element granitic pegmatites. Can. Mineral., 39, 6: 1513-1527.
• BARIAND P. & POULLEN J.F. 1978 - Famous mineral localities: the pegmatities of Laghman, Nuristan, Afghanistan. Mineral. Rec., 9, 5: 301-308.
• BAZAROW L.SH. & MOTORINA I.W. 1973 - Fiziko-chimiczeskie uslowia ormirowania rjedkometalnych pegmatitow natro-litewowo tipa. Dokl. Akad. Nauk SSSR, 188, 1.
• BODNAR R.J. 2003 - Re-equilibration of fluid inclusions. [W:] I. Samson, A. Anderson, D. Marshall (red.) Fluid Inclusions: Analysis and Interpretation. Mineralogical Association of Canada Short Course, 32: 213-230.
• BODNAR R.J. & BETHKE P.M. 1984 - Systematics of stretching of fluid inclusions. I. Fluorite and sphalerite at 1 atmosphere confining pressure. Econom. Geol., 79: 141-161.
• BODNAR R.J. & VITYK M.O. 1994 - Interpretation of microthermometric data for H2O-NaCl fluid inclusions. [W:] B. De Vivo, M.L. Frezzotti (red.) Fluid Inclusions in Minerals, Methods and Applications. Virginia Tech, Blacksburg: 117-130.
• BOWERSOX G.W. 1985 - A status report on gemstones from Afghanistan. Gems & Gemol., 21, 4: 192-204.
• BOWERSOX G.W. & CHAMBERLIN B.E. 1995 - Gemstones of Afghanistan. Geoscience Press, Tucson, Arizona.
• BROOKINS D.G., CHAKOUMAKOS B.C., COOK C.W., EWING R.C., LANDIS G.P. & REGISTER M.E 1979 - The Harding pegmatite - summary of recent research, in Santa Fe country. New Mexico Geological Society. Guidebook 30th field conference: 127-13
• DARLING R.S. 1991 - An extended equation to calculate NaCl contents from final clathrate melting temperatures in H2O-CO2-NaCl fluid inclusions: Implications for P-T isochore location. Geochim. Cosmochim. Acta, 55: 3869-3871.
• DELBASTEH-MIANDOAB R. & PENSE J. 1988 - Comparative studies of Brazilian and Afghani Spodumene. Fortsch. Miner., 66, 1: 22.
• DUAN Z., MŹLLER N. & WEARE J.H. 1992 - An equation of state for the CH4-CO2-H2O system: I. Pure systems from 0 to 1000°C and 0 to 8000 bar. Geochim. Cosmochim. Acta, 56: 2605-2617.
• DUNN P.J. 1974 - Gem spodumene and achroite tourmaline from Afghanistan. J. Gemmol., 14, 4: 170-174.
• FUCHS G., MATURA A. & SCHERMAN O. 1974 - Verbericht uber geologische und Lagerstattenkundliche Untersuchungen in Nurestan, Afghanistan. Verh. Geol. Bundesaust., Osterreich, 1: 9-23.
• GOLDSTEIN R.H. & REYNOLDS T.J. 1994 - Systematics of fluid inclusions in diagenetic minerals. SEPM Short Course, 31: 1-199.
• GOLDSTEIN R.H. 2001 - Fluid inclusions in sedimentary and diagenetic systems. Lithos, 55: 159-193.
• JERMAKOW N.P. 1972 - Gieochimiczeskie systemy wkljuczenij w minera3ach. Nierda, Moskwa.
• KALIUŻNY W.A. 1971 - Pierienapolienie żydkich wkljuczenij w minerałach i jewo geneticzeskoje znaczenie. Mineralogiczeski sbornik Lwiwskij uniwersitet, 25: 124-131.
• KALIUŻNY W.A. 1982 - Osnowy uczenia o minerałoobrazujuszczich fluidach. Naukowa dumka, Kijow.
• LARSON L.T., MILLER J.D., NADEAU J.E. & ROEDDER E. 1973 - Two sources of error in low temperature inclusion homogenization determination and corrections on published temperatures for the East Tennessee and Laisvall deposits. Econom. Geol., 68: 113-116.
• LECKEBUSCH R., RECKER K. & TRICHE C. 1974 - Relation entre couleur et luminescence des spodumènes d'Afghanistan et teneurs en chrome, manganèse et fer. C.R. Acad. Sc., Paris, Serie D-102: 278, 12: 1541-1544.
• LONDON D. 1986 - Formation of tourmaline-rich gem pockets in miarolitic pegmatites. Am. Mineral., 71: 396-405.
• LONDON D. & BURT D.M. 1982 - Lithium aluminosilicate occurrences in pegmatites and the lithium aluminosilicate phase diagram. Am. Mineral., 67: 483-493.
• MILLS M. 1984 - Kunzite. Lap. J., 38, 4: 546-552.
• NATKANIEC-NOWAK L. 2007 - Spodumenes from Nuristan, Afghanistan. Australian Gemmol., 23, 2: 51-57.
• ORRIS G.J. & BLISS J.D. 2002 - Mines and mineral occurrences of Afghanistan. U.S. Geological Survey Open-File Report 02-110.
• ROEDDER E. 1984 - Fluid inclusions. Reviews in mineralogy, 12: 1-646.
• ROSSOWSKI L.N., CHMYRIOW V.M., EREMENKO G.K. & AKBAR M. 1976a - Gieologia i uslowia formirowania spodumienowych miestoro.dieni Hindukusza (Afganistan). Geoi. Rud. Miestoroï., 43, 6: 19-33.
• ROSSOWSKI L.N., CHMYRIOW V.M. & SALAKH A.S. 1976b - Vertical range and zoning of spodumene pegmatite deposits in Afghanistan. Dokl. Akad. Nauk SSSR, 226, 1-6: 85-87.
• ROSSOWSKI L.N. 1981 - Rare-metal pegmatites with precious stones and conditions of their formation (Hindu Kush). Internation. Geol. Rev., 23, 11: 1312-1320.
• SEITZ J.C. & PASTERIS J.D. 1990 - Theoretical and practical aspects of differential partitioning of gases by clathrate hydrates in fluid inclusions. Geochim. Cosmochim. Acta, 54: 631-639.
• SŁOWAKIEWICZ M. 2003 - Fluid inclusion data in calcite from the Upper Triassic hot-spring travertines in southern Poland. J. Geochem. Explor., 78-79: 123-126.
• TAYLOR B.E., FOORD E.E. & FRIEDRICHSEN H. 1979 - Stable isotope and fluid inclusion studies of gem-bearing granitic pegmatite- aplite dikes. San Diego Country, California. Contrib. Miner. Petrol., 68: 187-205.
• WESEŁUCHA-BIRCZYNSKA A., SŁOWAKIEWICZ M., NATKANIEC-NOWAK L., & PRONIEWICZ L.M. 2010 - Raman microspectroscopy of organic inclusions in spodumenes from Nilaw (Laghman, Afghanistan). Spectrochim. Acta (w druku). www.bgs.ac.uk/AfghanMinerals/mininfo.htm
• ZHANG Y.-H. & FRANTZ J.D. 1987 - Determination of the homogenization temperatures and densities of supercritical fluids in the system NaCl-KCl-CaCl2-H2O using synthetic fluid inclusions. Chem. Geol., 64: 335-350.