Trace-elements in minerals from unusual rocks of the Southern Urals

Research subject. This articles presents the data obtained in the course of 75 analytical studies on a wide range of minerals (amphiboles, pyroxenes, garnets, spinels, olivines, anorthites, corundums, epidotes, apatites, clinochlore, dolomite, calcite, zircon) contained in igneous and metamorphic Southern Urals rocks. In addition, information is provided about the content of trace elements, including rare earth (REE) ones, in these rocks. The data on the content of trace elements in some minerals are presented for the first time (höegbomite, sapphirine, zoisite, clinozoisite, gedrite, cummingtonite, anthophyllite, potassium-magnesiohastingsite).

Materials and methods. A petrographic analysis of rocks containing the minerals under study was carried out. A particular attention was paid to petrographic analysis of rocks containing the minerals under study was carried out. A particular attention was paid to “fresh” rocks, containing the mineral under study which rarely occur in the Urals. These rocks feature inclusions of serpentinite melange in the form of plates and lenses among the metamorphic strata (schists, gneisses, and amphibolites) and are characterized by the preservation of primary structures, relative chemical homogeneity, as well as the presence of simultaneous growth surfaces between most minerals. Of particular research interest were minerals from rocks, the composition of which had been relatively poorly studied (pyroxene-amphibole anorthite gabbro and gabbro-amphibolites, scapolite rocks, hornblendite, gedrite-cummingtonite-anthophyllitic crystallo-schists and amphibolites, ore-less carbonatites). The composition of mineral samples was determined using a scanning microscope REMMA-202 M equipped with an energy dispersive console and a mass-spectrometer Agilent 7700x (ICP-MS and LA-ICP-MS methods).

Results. Petrographic characteristics of the rocks containing the minerals under study are given. The geographical coordinates of locations, where mineral sampling was performed, are provided. The content of trace elements is shown to vary greatly within related species of minerals (amphiboles, garnets, pyroxenes, olivines, epidotes, spinels, mica, etc.), with the fluctuations being independent of the alkalinity of host rocks or their geological nature.

Conclusions. For the first time, a significant role of zoisite and clinozoisite in the process of concentrating trace elements, including REE, has been revealed. The role of apatite as one of the main mineral concentrators of REE has not been confirmed either in the main and ultrabasic rocks, or in some calcite-dolomite carbonatites. 

1. Anikina E.V., Krasnobaev A.A., Rusin A.I., Busharina S.V., Kapitonov I.N., Lokhov K.I. (2012) Izotopno-geokhimicheskie kharakteristiki tsirkona iz dunitov, klinopiroksenitov i gabbro Platinonosnogo poyasa Urala. Dokl. AN, 436(6), 711-715.

2. Bazhenov A.G., Bazhenova L.F., Ivanov B.N., Popov V.A. (1980) Sostav redkozemel'nykh elementov v granatakh iz porod Il'menogorskogo kompleksa. Elementy-primesi v mineralakh i gornykh porodakh Urala. Sverdlovsk: UNTs AN SSSR, 65-66.

3. Balashov Yu.A. (1976) Geokhimiya redkozemel'nykh elementov. M.: Nauka, 268 s.

4. Baneva N.N., Medvedeva E.V., Rusin A.I. (2009) Geokhimicheskie osobennosti ul'tramafitov Il'menogorskoi sdvigovoi zony. Ezhegodnik-2008. Tr. IGG UrO RAN. Vyp. 156, 115-119.

5. Gottman I.A. (2014) Gornblendity dunit-klinopiroksenit-gabbrovykh. kompleksov Urala: petrologiya i genezis. Dis. … kand. geol.-min. nauk. Ekaterinburg: IGG UrO RAN, 142 s.

6. Gottman I.A., Pushkarev E.V. (2009) Geologicheskie dannye o magmaticheskoi prirode gornblenditov v gabbro-amfibolitovykh kompleksakh Uralo-Alyaskinskogo tipa. Litosfera, (2), 78-86.

7. Grigor'ev N.A. (2009) Raspredelenie khimicheskikh elementov v verkhnei chasti kontinental'noi kory. Ekaterinburg: UrO RAN, 383 s.

8. Drugova G.M., Skublov S.G. (2004) Raspredelenie redkozemel'nykh elementov v granatakh, klinopiroksenakh, amfibolakh i biotitakh metamorficheskikh porod. Zapiski RMO, (2), 47-58.

9. Erokhin Yu.V., Vakhrusheva N.V., Shagalov E.S. (2007) Topazy iz zhily "Yuzhnaya" Aduiskogo pegmatitovogo polya. Mineralogiya Urala-2007. Sb. nauch. st. Miass; Ekaterinburg: UrO RAN, 191-194.

10. Efimov A.A., Efimova L.A., Maegov V.I. (1989) Strontsii v plagioklaze ural'skikh gabbro: petrogeneticheskii i prikladnoi aspekty. Geokhimiya, (1), 1541-1553.

11. Zaikov V.V., Tairov A.D., Zaikova E.V., Yuminov A.M., Kotlyarov V.A. (2016) Blagorodnye metally v rudakh i drevnikh zolotykh izdeliyakh Tsentral'noi Evrazii. Chelyabinsk: Kamennyi poyas, 320 s.

12. Interpretatsiya geokhimicheskikh dannykh. (2001) (Pod red. E.V. Sklyarova). M.: Intermet Inzhiniring, 288 s.

13. Kolonin G.R., Shironosova G.P., Palesskii S.V., Fedorin M.A., Kandinov M.N., Popova V.I., Repina S.A., Shvetsova I.V. (2007) Redkozemel'nye elementy monatsitov Urala i modeli fiziko-khimicheskikh uslovii mineraloobrazovaniya. Mineralogiya Urala-2007. Sb. nauch. st. Miass; Ekaterinburg: UrO RAN, 246-249.

14. Korinevskii V.G. (2008) Magmaticheskii epidot iz gabbro. Geologiya i geofizika, 49(3), 214-220.

15. Korinevskii V.G., Bazhenova L.F. (2004) Redkie zemli v ekzoticheskikh amfibolitakh i kristalloslantsakh Il'men. Ural'skii geol. zhurn., (6), 3-1.

16. Korinevskii V.G., Bazhenova L.F. (2008) Redkozemel'nye elementy v mafitakh i ul'tramafitakh Il'menskikh gor. Ural'skii mineralog. sb., (15). Miass; Ekaterinburg: UrO RAN, 50-58.

17. Korinevskii V.G., Korinevskii E.V. (2006) Novoe v geologii, petrografii i mineralogii Il'menskikh gor. Miass: IMin UrO RAN, 102 s.

18. Korinevskii V.G., Korinevskii E.V. (2007) Il'meny: ne tokmo mineralami edinymi… Ural'skii mineralog. sb., (14). Miass: IMin UrO RAN, 153-211.

19. Korinevskii V.G., Korinevskii E.V. (2013) Novye gornye porody i mineraly iz Il'menskikh gor. Ural'skaya Mineralogicheskaya shkola-2013. Ekaterinburg: UGGU, 77-80.

20. Korinevskii V.G., Korinevskii E.V. (2014a) Fragmenty porod osnovaniya zemnoi kory v strukture Il'meno-Vishnevogorskogo kompleksa. Ural'skii geol. zhurn., (1), 68-72.

21. Korinevskii V.G., Korinevskii E.V. (2014b) Novoe dokazatel'stvo pozdnepaleozoiskogo vozrasta kvartsito-slantsevykh tolshch obramleniya Il'menogorskogo kompleksa (Yuzhnyi Ural). Dokl. AN, 455(5), 553-555.

22. Korinevskii V.G., Korinevskii E.V. (2015) Neobychnaya forma vklyuchenii pirrotina v skapolitakh magmaticheskikh porod Yuzhnogo Urala. Zapiski RMO, (6), 74-83.

23. Kosarev A.M. (2012) Geokhimicheskie osobennosti vulkanitov Sakmarskoi i Voznesensko-Prisakmarskoi zon, geodinamicheskie rekonstruktsii, kolchedannoe orudenenie. Geologiya, poleznye iskopaemye i problemy geoekologii Bashkortostana, Urala i sopredel'nykh territorii. Ufa: DizainPress, 148-151.

24. Krasnobaev A.A. (1986) Tsirkon kak indikator geologicheskikh protsessov. M.: Nauka, 147 s.

25. Lesnov F.P. (2007) Redkozemel'nye elementy v ul'tramafitovykh i mafitovykh porodakh i ikh mineralakh. Kn. 1. Novosibirsk: Geo, 403 s.

26. Lesnov F.P., Balykin P.A., Palesskii S.V. (2007) Raspredelenie elementov-primesei v olivinovykh gabbro i slagayushchikh ikh plagioklazakh i klinopiroksenakh iz Kokpektinskogo dunit-troktolit-gabbrovogo massiva, Yuzhnyi Ural (po dannym metoda LA ICP-MS). Mineralogiya Urala-2007. Sb. nauch. st. Miass; Ekaterinburg: UrO RAN, 86-90.

27. Maslennikov V.V., Ayupova N.R., Maslennikova S.P., Tret'yakov G.A., Melekestseva I.Yu., Safina N.P., Belogub E.V., Larzh R.R., Danyushevskii L.V., Tseluiko A.S., Gladkov A.G., Krainev Yu.D. (2014) Toksichnye elementy v kolchedanoobrazuyushchikh sistemakh. Ekaterinburg: RIO UrO RAN, 340 s.

28. Maslov A.V. (2005) Osadochnye porody: metody izucheniya i interpretatsii poluchennykh dannykh. Ekaterinburg: Izd-vo UGGU, 289 s.

29. Maslov A.V. (2017) Doordovikskie fosfority i paleogeografiya: kratkii geokhimicheskii ekskurs v sistematiku redkozemel'nykh elementov. Litosfera, (1), 5-30.

30. Maslov A.V., Ronkin Yu.L., Krupenin M.T., Petrov G.A., Kornilova A.Yu., Lepikhina O.P., Popova O.Yu. (2005) Sistematika redkozemel'nykh elementov i model'nyi vozrast Nd v argillitakh venda zapadnogo sklona Srednego Urala. Dokl. AN, 401(5), 668-672.

31. Medvedeva E.V. (2010) Raspredelenie RZE v granatakh metamorficheskikh porod Il'menskikh gor. Nauka, priroda i obshchestvo. Mat-ly Mezhdunar. konf. Miass; Ekaterinburg: UrO RAN, 37-39.

32. Nedosekova I.L., Murzin V.V. (2007) Tipokhimizm i evolyutsiya sostava karbonatov iz karbonatitov Il'meno-Vishnevogorskogo shchelochnogo kompleksa (Yuzhnyi Ural). Mineralogiya Urala-2007. Sb. nauch. st. Miass; Ekaterinburg: UrO RAN, 49-54.

33. Pushkarev E.V., Fershtater G.B. (1996) Geokhimiya RZE kak kriterii prinadlezhnosti Vostochno-Khabarninskogo kompleksa k giperbazit-gabbrovym assotsiatsiyam platinonosnogo tipa. Ezhegodnik-1995. Ekaterinburg: IGG UrO RAN, 90-93.

34. Repina S.A., Yuzeeva N.S. (2005) Redkozemel'nye i strontsievye alyumofosfaty v khrustalenosnykh zhilakh mestorozhdeniya Piramida (Pripolyarnyi Ural). Zapiski RMO, (6), 103-110.

35. Ronkin Yu.L., Sindern S., Kramm U., Lepikhina O.P. (2008) Izotopnaya geologiya drevneishikh obrazovanii Urala: U-Pb, Sm-Nd, Rb-Sr i 40Ar-39Ar sistematika. Strukturno-veshchestvennye kompleksy i problemy geodinamiki dokembriya fanerozoiskikh orogenov. Ekaterinburg: UrO RAN, 117-120.

36. Rusin A.I., Valizer P.M., Krasnobaev A.A., Baneva N.N., Medvedeva E.V., Dubinina E.V. (2012) Priroda granat-anortit-klinopiroksen-amfibolovykh porod Il'menogorskogo kompleksa (Yuzhnyi Ural). Litosfera, (1), 91-109.

37. Salikhov D.N., Baburov A.V. (1999) Redkozemel'nye elementy v ordovikskikh effuzivakh Uchalinskogo segmenta Voznesensko-Prisakmarskoi melanzhevoi zony. Ezhegodnik-1997 IG UNTs RAN. Ufa: DizainPress, 211-214.

38. Semenov I.V., Kolenko L.I., Shtenke A.A. (1980) RZE v bazal'takh vulkanogennykh formatsii Ural'skoi evgeosinklinali. Elementy-primesi v mineralakh i gornykh porodakh Urala. Sverdlovsk: UNTs ANSSSR, 36-64.

39. Snachev A.V., Puchkov V.N., Savel'ev D.E., Snachev V.I. (2006) Geologiya Aramil'sko-Sukhtelinskoi zony Urala. Ufa: DizainPoligrafServis, 176 s.

40. Sobolev S.F. (1965) Redkozemel'nye elementy v ul'traosnovnykh i osnovnykh porodakh Urala. Geokhimiya, (4), 433-442.

41. Skublov S.G. (2005) Geokhimiya redkozemel'nykh elementov v porodoobrazuyushchikh metamorficheskikh mineralakh. SPb.: Nauka, 147 s.

42. Udachin V.N., Aminov P.G., Filippova K.A. (2014) Geokhimiya gornopromyshlennogo tekhnogeneza Yuzhnogo Urala. Ekaterinburg: RIO UrO RAN, 252 s.

43. Fershtater G.B. (2013) Paleozoiskii intruzivnyi magmatizm Srednego i Yuzhnogo Urala. Ekaterinburg: UrO RAN, 368 s.

44. Fershtater G.B., Bea F. (1996) Geokhimicheskaya tipizatsiya ural'skikh ofiolitov. Geokhimiya, (3), 195-218.

45. Fershtater G.B., Bea F., Montero M. P., Skerrou Dzh. (2004) Rogovoobmankovye gabbro Urala: tipizatsiya, geokhimicheskie osobennosti i petrogenezis. Geokhimiya, (7), 707-728.

46. Fershtater G.B., Krasnobaev A.A., Bea F., Montero P. (2012) Geokhimiya tsirkona iz magmaticheskikh i metamorficheskikh porod Urala. Litosfera, (4), 13-29.

47. Shatrov V.A., Voitsekhovskii G.V. (2016) Rekonstruktsiya obstanovok fosfatoobrazovaniya (po dannym raspredeleniya lantanoidov). Geologiya i geofizika, 50(10), 1104-1118.

48. Frei D., Liebscher A., Franz G., Dulski P. (2004) Trace element geochemistry of epidote minerals. Rev. Mineral. Geochem., 56(1), 553-605.

49. Hawthorne F.C., Oberti R., Harlow G.E., Maresch W.V., Martin R.F., Schumacher J.C., Welch M.D. (2012) Nomenclature of the amphibole supergroup. Amer. Miner., 97, 2031-2048.

50. Locock A.J. (2014) An Excel spreadsheet to classify chemical analyses of amphiboles following the IMA 2012 recommendations. Comput. Geosci., 62, 1-11.

51. Nedosekova I.L., Belousova E.A., Sharygin V.V., Belyatsky B.V., Baynova T.B. (2013) Origin and evolution of the Il'meny-Vishnevogorsky carbonatites (Urals, Russia): insights from trace-elements compositions, Rb-Sr, Sm-Nd, U-Pb and Lu-Hf isotope data. Mineral. Petrol., 107, 101-123.

52. Whitney D.L., Evans B.W. (2010) Abbreviations for names of rock-forming minerals. Amer. Miner., 95, 185-187.