Abstract
Results of a microstructural study of spinel peridotite samples obtained from the Kraka massif in the Southern Urals, involving findings of Cr-spinel neomineralisations within intensive ductile deformed silicates (olivine and orthopyroxene), are presented. The new-formed Cr-spinel grains show different stages of syn-deformation growth as evidenced by investigations combining petrography, decorated dislocation structure analysis, scanning electron microscopy and electron backscatter diffraction (EBSD). Initial precipitations appearing as rods or lamellae are observed to form around structural defects of host silicate grains (olivine and orthopyroxene) by means of impurity segregation or heterogeneous nucleation in the most distorted lattice regions (i.e., in the predominant recrystallisation zones). Syn-deformational crystal growth leads to a complication and coarsening of the grain morphology by coalescence due to a reduction in grain boundary (interfacial) energy. While in the process of growing, the Cr-spinel grains capture fragments of silicate matrix in the solid-state process. The final stage of Cr-spinel growth involves a change in morphology resulting in their characteristic crystallographic forms (spheroidisation). The presence of euhedral Cr-spinel grains, typical for ophiolitic dunite bodies, is a result of interfacial energy reduction in areas of grain boundaries of the hardest phase. The general trend of the observed stages relates closely with the localisation of deformation zones in the upwelling upper mantle (diapir), which are composed by the weakest phase of olivine (dunites). The concentration of the weakest olivine phase in the mobile zones, which is energetically beneficial, explains why dunite bodies having euhedral chromite grains comprise the dynamic equilibrium rocks in the plastic flow localisation zones in upper mantle diapirs. Conversely, assemblages having pyroxene phases, which are stronger and larger in size compared to olivine, are not stable in these zones.
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References
Adjaoud O, Marquardt K, Jahn S (2012) Atomic structures and energies of grain boundaries in Mg2SiO4 forsterite from atomistic modeling. Phys Chem Miner 39:749–760
Arai S (1978) Chromian spinel lamellae in olivine from the Iwanai-Dake peridotite mass, Hokkaido, Japan. Earth Planet Sci Lett 39:267–273
Auge T (1987) Chromite deposits in the northern Oman ophiolite: mineralogical constraints. Mineral Deposita 22:1–10
Bell PM, Mao HK, Roedder E, Weiblen PW (1975) The problem of the origin of symplectites in olivine-bearing lunar rocks. Proc Sixth Lunar Sci Conf 1:231–248
Boland JN (1974) Lamellar structures in low-calcium orthopyroxenes. Contrib Mineral Petrol 47:215–222
Borisenko EB, Gnesin BA (2003) Recrystallization and ageing of undoped and strontium-doped potassium chloride crystals after incomplete polymorphic transformation under pressure. Phys Solid State 45(5):868–874
Bunin KP, Baranov AA (1970) Metallography. Metallurgiya, Moscow (in Russian)
Carter NL (1976) Steady state flow of rocks. Rev Geophys Space Phys 14:301–360
Coe RS, Kirby SH (1975) The orthoenstatite to clinoenstatite transformation by shearing and reversion by annealing: Mechanism and potential applications. Contrib Mineral Petrol 52:29–55
Demouchy S, Mussi A, Barou F, Tommasi A, Cordier P (2014) Viscoplasticity of polycrystalline olivine experimentally deformed at high pressure and 900°C. Tectonophysics 623:123–135
Drury MR, Urai JL (1990) Deformation-related recrystallization processes. Tectonophysics 172:235–253
Durham WB, Goetze C, Blake B (1977) Plastic flow of oriented single crystal olivine. 2. Observations and interpretations of the dislocation structure. J Geophys Res 82:5755–5770
Etheridge MA, Hobbs BE (1974) Chemical and deformational controls on recrystallization of mica. Contrib Mineral Petrol 43:111–124
Franz L, Wirth R (2000) Spinel inclusions in olivine of peridotite xenoliths from TUBAF seamount (Bismarck Archipelago/Papua New Guinea): evidence for the thermal and tectonic evolution of the oceanic lithosphere. Contrib Mineral Petrol 140:283–295
Ghosh B, Misra S, Morishita T (2017) Plastic deformation and post-deformation annealing in chromite: Mechanisms and implications. Am Mineral 102:216–226
Gorelik SS (1978) Recrystallization of metals and alloys. Metallurgiya, Moscow. (in Russian)
Green HW, Gueguen Y (1983) Deformation of peridotite in the mantle and extraction by kimberlite; a case history documented by fluid and solid precipitates in olivine. In: Etheridge MA, Cox SF (eds) Deformation processes in tectonics. Tectonophysics 92:71–92
Gueguen Y, Nicolas A (1980) Deformation of mantle rock. Ann Rev Earth Planet Sci 8:119–144
Halfpenny A, Prior DJ, Wheeler J (2006) Analysis of dynamic recrystallization and nucleation in a quartzite mylonite. Tectonophysics 427:3–14
Heinemann S, Wirth R, Gottschalk M, Dresen G (2005) Synthetic [100] tilt grain boundaries in forsterite: 9.9 to 21.5°. Phys Chem Miner 32:229–240
Honeycombe RWK (1968) The plastic deformation of metals. Edward Arnold (Publ.), London, 477 p
Johnson C (2012) Podiform chromite at Voskhod, Kazakhstan. Dissertation, Cardiff University
Jung H (2017) Crystal preferred orientations of olivine, orthopyroxene, serpentine, chlorite, and amphibole, and implications for seismic anisotropy in subduction zones: a review. Geosci J 21:985–1011
Jung H, Park M, Jung S, Lee J (2010) Lattice preferred orientation, water content, and seismic anisotropy of orthopyroxene. J Earth Sci 21:555–568
Karato S-I (2008) Deformation of earth materials. An introduction to the rheology of Solid Earth. Cambridge University Press, Cambridge
Karato S-I, Jung H, Katayama I, Skemer Ph (2008) Geodynamic significance of seis-mic anisotropy of the upper mantle: new insights from laboratory studies. Ann Rev Earth Planet Sci 36:59–95
Khisina NR, Lorenz CA (2015) Dehydrogenation as the mechanism of formation of the oriented spinel-pyroxene symplectites and magnetite-hematite inclusions in terrestrial and extraterrestrial olivines. Petrology 23:176–188
Kirby SH, Etheridge MA (1981) Exsolution of Ca pyroxene from orthopyroxene aided by deformation. Phys Chem Miner 7:105–109
Köhler T (1989) Der Ca-Gehalt von Olivin in Gleichgewicht mit Clinopyroxen als Geothermometer. Dissertation. University of Mainz
Kohlstedt DL, Goetze C, Durham WB, van der Sande JB (1976) A new technique for decorating dislocations in olivine. Science 191:1045–1046
Leblanc M (1980) Chromite growth, dissolution and deformation from a morphological view point: SEM investigations. Mineral Deposita 15:201–210
Li H, Bian T-J, Lei C, Zheng G-W, Wang Y-F (2019) Dynamic inter-play between dislocations and precipitates in creep aging of an Al-Zn-Mg-Cu alloy. Adv Manuf 7:15–29
Martin JW (1968) Precipitation hardening. Pergamon-Press, Oxford
Matsumoto I, Arai S (2001) Morphological and chemical variations of chromian spinel in dunite-harzburgite complexes from the Sangun zone (SW Japan): implications for mantle/melt reaction and chromitite formation processes. Mineral Petrol 73:305–323
McLaren AC, Etheridge MA (1976) A transmission electron microscope study of naturally deformed orthopyroxene. I. Slip mechanisms. Contrib Mineral Petrol 57:163–177
Mercier JC, Nicolas A (1975) Textures and fabrics of upper mantle peridotites as illustrated by basalt xenoliths. J Petrol 16:454–487
Nicolas A, Poirier JP (1976) Crystalline plasticity and solid state flow in metamorphic rocks. Wiley – Interscience, London
Nicolas A, Bouchez JL, Boudier F, Mercier J-C (1971) Textures, structures and fabrics due to solid state flow in some European lherzolites. Tectonophysics 12:55–86
Nielson-Pike JE, Schwarzman EC (1977) Classification of textures in ultramafic xenoliths. J Geol 85:49–61
Noller JS, Carter B (1986) The origin of various types of chromite schlieren in the Trinity peridotite, Klamath Mountains, California. In: Carter B (ed) Metallogeny of basic and ultrabasic rocks. Theophrastus Publications, 151–178
Novikov II (1986) Theory of thermal processing of metals. Metallurgiya, Moscow. (in Russian)
Petukhov BV (2009) Dynamic aging of dislocations in materials with a high crystalline relief: competition between diffusion and impurity entrainment. Crystallogr Rep 54(1):82–88
Poirier J-P (1985) Creep of Crystals. Cambridge University Press, Cambridge
Prichard HM, Barnes SJ, Godel B, Reddy SM, Vukmanovic Z, Halfpenny A, Neary CR, Fisher PC (2015) The structure of and origin of nodular chromite from the Troodos ophiolite, Cyprus, revealed using high-resolution X-ray computed tomography and electron backscatter diffraction. Lithos 218–219:87–98
Prior DJ, Bestmann M, Halfpenny A, Mariani E, Piazolo S, Tullis J, Wheeler J (2004) Recrystallization and grain growth in rocks and minerals. Mater Sci Forum 467–470:545–550
Risold A-C, Trommsdorff V, Grobety B (2001) Genesis of ilmenite rods and palisades along humite-type defects in olivine from Alpe Arami. Contrib Mineral Petrol 140:619–628
Satsukawa T, Piazolo S, González-Jiménez J-M, Colás V, Griffin WL, O’Reilly SY, Gervilla F, Fanlo I, Kerestedjian TN (2015) Fluid-present deformation aids chemical modification of chromite: Insights from chromites from Golyamo Kamenyane, SE Bulgaria. Lithos 228–229:78–89
Saveliev DE (2021) Chromitites of the Kraka ophio lite (South Urals, Russia): geological, mineralogical and structural features. Mineralium Deposita. https://doi.org/10.1007/s00126-021-01044-5
Saveliev DE, Artemyev DA (2021) Geochemical features of plastically deformed olivine from ophiolite peridotites and dunites of Kraka massifs (the Southern Urals). Zapiski RMO 150(1):101–126 (in Russian)
Saveliev DE, Fedoseev VB (2019) Solid-state redistribution of mineral particles in the upwelling mantle flow as a mechanism of chromite concentration in the ophiolite ultramafic rocks (by the example of Kraka ophiolite, the Southern Urals). Georesources 21:31–46
Saveliev DE, Puchkov VN, Sergeev SN, Musabirov II (2017) Deformation-induced decomposition of enstatite in mantle peridotite and its role in partial melting and chromite ore formation. Dokl Earth Sci 476:1058–1061
Schwartz AJ, Kumar M, Adams BL, Field DP (2009) Electron backscattered diffraction in Material Science. Springer Science + Business Media, Berlin
Skrotzki W (1994) Defect structure and deformation mechanisms in naturally deformed augite and enstatite. Tectonophysics 229:43–68
Spiess R, Peruzzo L, Prior DJ, Wheeler J (2001) Development of garnet porphyroblasts by multiple nucleation, coalescence and boundary misorientation-driven rotation. J Metamorph Geol 19:269–290
Stunitz H (1998) Syndeformational recrystallization ± dynamic or compositionally induced? Contrib Mineral Petrol 131:219–236
Till JL, Moskowitz BM (2014) Deformation microstructures and magnetite texture development in synthetic shear zones. Tectonophysics 629:211–223
Van Duysen JC, Doukhan N, Doukhan JC (1985) Transmission electron microscope study of dislocations in orthopyroxene (Mg,Fe)2Si2O6. Phys Chem Miner 12:39–44
Vlasak G, Hartmanova M, Besedicova S (1979) The kinetics of barium precipitation at dislocations in NaCl monocrystals. Czech J Phys 29(6):658–667
Vukmanovic Z, Barnes SJ, Reddy SM, Godel B, Fiorentini ML (2013) Morphology and microstructure of chromite crystals in chromitites from the Merensky Reef (Bushveld Complex, South Africa). Contrib Mineral Petrol 165:1031–1050
Wallis D, Hansen LN, Tasaka M, Kumamoto KM, Parsons AJ, Lloyd GE, Kohlstedt DL, Wilkinson AJ (2019) The impact of water on slip system activity in olivine and the formation of bimodal crystallographic preferred orientations. Earth Planet Sci Lett 508:51–61
Warren JM, Hirth G, Kelemen PB (2008) Evolution of olivine lattice preferred orientation during simple shear in the mantle. Earth Planet Sci Lett 272:501–512
Wheeler J, Prior DJ, Jiang Z, Spiess R, Trimby PW (2001) The petrological significance of misorientations between grains. Contrib Mineral Petrol 141:109–124
Whitney DL, Goergen ET, Ketcham RA, Kunze K (2008) Formation of garnet polycrystals during metamorphic crystallization. J Metamorph Geol 26:365–383
Yamamoto J, Kagi H, Kaneoka I, Lai Y, Prikhod’ko VS, Arai S (2002) Fossil pressures of fluid inclusions in mantle xenoliths exhibiting rheology of mantle minerals: implications for the geobarometry of mantle minerals using micro Raman spectroscopy. Earth Planet Sci Lett 198:511–519
Yamamoto J, Ando J, Kagi H, Inoue T, Yamada A, Yamazaki D, Irifune T (2008) In situ strength measurements on natural upper-mantle minerals. Phys Chem Miner 35:249–257
Yudovskaya MA, Costin G, Shilovskikh V, Chaplygin I, McCreesh M, Kinnaird J (2019) Bushveld symplectic and sieve textured chromite is a result of coupled dissolution-reprecipitation: a comparison with xenocrystic chromite reactions in arc basalt. Contrib Mineral Petrol 174:74
Yund RA, Tullis J (1991) Compositional changes of minerals associated with dynamic recrystallization. Contrib Mineral Petrol 108:346–355
Zhang RY, Shu JF, Mao HK, Liou JG (1999) Magnetite lamellae in olivine and clinohumite from Dabie UHP ultramafic rocks, Central China. Am Mineral 84:564–569
Acknowledgements
The authors are grateful to S. Misra, A. K. Sen, V.S. Kamenetsky and the Editor-in-Chief Maarten A.T.M. Broekmans for their useful comments. This study was supported by the Russian Science Foundation grant #16-17-10145, also it was performed as part of government contract #0246–2019–0078. Analytical studies were carried out using the equipment of the resource centers “Geomodel” and “Nanophotonics” of the Science Park of St. Petersburg State University and the Center for Collective Use of the IMSP RAS “Structural and physical-mechanical research of materials”.
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This study was supported by the Russian Science Foundation grant #16-17-10145, also it was performed as part of government contract #0246–2019–0078.
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Saveliev D.E. – field work, sample preparation, optical microscope study, SEM/EMPA study, manuscript writing; Shilovskikh V.V. – sample preparation, EBSD study and interpretation, Sergeev S.N. - SEM/EMPA study, interpretation of EBSD data; Kutyrev A.V. – SEM study, manuscript writing.
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Saveliev, D.E., Shilovskikh, V.V., Sergeev, S.N. et al. Chromian spinel neomineralisations and the microstructure of plastically deformed ophiolitic peridotites (Kraka massifs, Southern Urals, Russia). Miner Petrol 115, 411–430 (2021). https://doi.org/10.1007/s00710-021-00748-w
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DOI: https://doi.org/10.1007/s00710-021-00748-w