Abstract
Twelve eudialyte specimens from the Khibini alkaline complex (Kola peninsula, USSR) have been studied by optical and Mössbauer spectroscopy methods. It has been found that in optically positive eudialytes Fe is mainly represented by Fe2+ ions in a rare planar four-fold coordination (Mössbauer hyperfine parameters — isomer shift IS=1.08 mm/s and quadrupole splitting QS=0.34 mm/s). It is these ions, not Mn3+ as it was assumed before, that are responsible for the crimson-red colour of eudialyte. In the optically negative red-brown and yellow-brown eudialytes (eucolites) Fe2+ ions are contained also in a tetragonal pyramid based on the above planar quadrangle (IS=1.33 mm/s and QS=2.24 mm/s).
Major attention has been paid to an explanation of the colour and crystal-chemical features of optically positive in comparison with optically negative varieties of eudialytes.
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References
Annersten H, Ericsson T, Nord AG (1980) The cation order in iron-containing zinc and magnesium orthophosphates determined from Mössbauer spectroscopy. J Phys Chem Solids 41:1235–1240
Bakhtin AI (1973) Optical absorption spectra of eudialyte. In: Structure and properties of minerals, Kazan University Publisher, Kazan: 114–118 (in Russian)
Bakhtin AI (1985) Rock-forming silicates: optical spectra, crystal chemistry, laws of colour, typomorphism. Kazan University Publishers, Kazan (in Russian)
Blume M (1965) Magnetic relaxation and asymmetric quadrupole doublets in the Mössbauer effect. Phys Rev Lett 14:96–98
Burns R, Clark MG, Stone AJ (1966) Vibronic polarization in electron spectra of gillespite, a mineral containing iron (II) in square-planar coordination. Inorg Chem 5:1268–1270
Clark MG, Bancroft GM, Stone AJ (1967) Mössbauer spectrum of Fe2+ in square planar environment. J Chem Phys 47:4250–4261
Dickson BL (1975) The iron distribution in rhodonite. Amer Mineral 60:98–104
Dudkin OB (1967) On the nature of characteristic colour of some minerals in alkaline rocks and pegmatites. Materials on the mineralogy of Kola peninsula. Nauka, Leningrad department: 169–184 (in Russian)
Feklichev VG (1963) Optical properties of Khibini and some other eudialytes. Proceedings of the Institute of Mineralogy, Geochemistry and Crystal Chemistry of Rare Elements of the USSR. Acad Sci 15:121–136 (in Russian)
Feklichev VG (1979) Investigation of the interrelation of the composition and properties in minerals of the eudialyte group. New data on minerals in the USSR, Nauka, Moscow:126–144 (in Russian)
Giusseppetti G, Mazzi F, Tadini C (1971) The crystal structure of eudialyte. Tschermaks Mineral Petrogr Mitt 16:105–127
Golyshev VM, Simonov VI, Belov NV (1971) On crystal structure of eudialyte. Kristallografiya 16:93–98 (in Russian)
Golyshev VM, Simonov VI, Belov NV (1972) Crystal structure of eudialyte. Kristallografiya 17:1119–1123 (in Russian)
Grum-Grzhimailo SV (1945) On the possibility of determination of valency and coordination of elements colouring minerals from absorption curves. Proceedings of All-Russian Mineral Society, 2-nd ser 74:2:89–109 (in Russian)
Judd DB, Wiszecki G (1978) Colour in business, science and industry, Mir, Moscow (in Russian)
Kostyleva EE (1929) Isomorphous eudialyte-eucolite row from the Khibini and Lovosera tundras. Proceedings of the Mineral. Museum of the USSR Acad Sci 3:169–222 (in Russian)
Kronig R de L (1939) On the mechanism of paramagnetic relaxation. Physica 6:1:33–43
Manning PG, Tricker MJ (1975) Optical absorption and Mössbauer spectral studies of iron and titanium site-populations in vesuvianites. Can Mineral 13:259–265
Menil F (1985) Systematic trends of the 57Fe Mössbauer isomer shifts in (FeOn) and (FeFn) polyhedra. Evidence of a new correlation between the isomer shift and the inductive effect of the competing bond T-X(Fe) (Where X is O or F and T — any element with a formal positive charge). J Phys Chem Solids 46:763–789
Novikov GV (1987a) Method of analysis of low-resolution spectra. Report deposited in VINITI, No 4112-B87 (in Russian)
Novikov GV (1987b) Use of axial textures for the determination of parameters of local fields in a crystal by a NQR method. Report deposited in VINITI, No 7533-B87 (in Russian)
Pabst A (1943) The crystal structure of gillespite BaFeSi4O10. Amer Mineral 28:372–390
Platonov AN (1976) Origin of the colour of minerals. Naukova Dumka Kiev (in Russian)
Pol'shin EV, Platonov AN, Borutzky BE, Taran MN, Gevorkyan CV, Men'shikov YuP, Litvin MA, Belichenko VP (1987) New data on minerals of the eudialyte group. Mineral Zhurnal 9:36–48 (in Russian)
Rastsvetaeva RK, Andrianov VI (1987) New data on the crystal structure of eudialyte. DAN SSSR 293:1122–1126 (in Russian)
Rastsvetaeva RK, Borutzky BE (1988) Crystal-chemical peculiarities of eudialyte proceeding from new structural data. Mineral Zhurnal 10:48–57 (in Russian)
Rastsvetaeva RK, Pushcharovskii DYu, Yamnova NA, Borutzky BE (1987) Crystal structure of red-brown barsanovite and its position in the isomorphous row eudialyte — eucolite — barsanovite. Comparative crystal chemistry. Moscow University Publishers, Moscow:153–160 (in Russian)
Rastsvetaeva RK, Borutzky BE, Gusev AI (1988) Crystal structure of eucolite. Kristallografiya 33:353–358 (in Russian)
Rucklidge JC, Kocman V, Whitlow SH, Gabe EJ (1975) The crystal structures of three Canadian vesuvianites. Can Mineral 13:15–21
Taran MN, Nazarov YuI (1982) Use of up-to-dated spectrophotometer IKS-14 for measurements of optical absorption spectra of minerals in short-range IR region (750–2500 nm). Proc of All-Russian Mineral Soc 111:609–612
Taran MN, Platonov AN (1988) Optical absorption spectra of iron ions in vivianite. Phys Chem Minerals 16:304–310
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Pol'shin, E.V., Platonov, A.N., Borutzky, B.E. et al. Optical and mössbauer study of minerals of the eudialyte group. Phys Chem Minerals 18, 117–125 (1991). https://doi.org/10.1007/BF00216604
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DOI: https://doi.org/10.1007/BF00216604