Specific Features of Typification and Diamondiferousness of Kimberlites

N. N. Zinchuk

Abstract


Most of the studied kimberlite diatremes represent the multiphase pipes, where each magmatic phase of intrusion, formed inside diatremes, is composed by kimberlites of specific petrographic and petrochemical type characterized by the number of stable, slightly changing with depth typomorphic features. In the same diatreme, kimberlites of different intrusion phases differ in a correlation of porphyritic and clastic structural elements, and in a content of indicator minerals. Carried out studies indicated sufficient variation in diamondiferousness of different intrusion phases of kimberlites, which is controlled by different location depth and duration of the source magmatic pocket functioning, physical-chemical properties of initial components, as well as by velocity of ascent and character of kimberlite magma advance at the different kimberlite-formation stages. Kimberlite breccia of the completion stages of pipes formation are the most productive in comparison with porphyritic kimberlites of the early intrusion phases. For better assessing of the kimberlite pipes productivity, it is necessary to take into consideration the real relationship between the intrusive and explosive processes of kimberliteformation, which usually vary in time.

Keywords


kimberlite pipes; kimberlite-formation; diamonds and diamondiferousness; intrusive and explosive processes; minerals typomorphism

References


Afanasyev V.P., Zinchuk N.N., Kharkiv A.D., Sokolov V.N.1980. Zakonomernosti izmeneniya mantiynykh mineralov v kore vyvetrivaniya kimberlitov [Regularities of mantle minerals alteration in the kimberlites weathering crust].In Minerageniya zony gipergeneza. Nauka, Moskva, pp. 45-54. (in Russian)

Bartoshinskiy Z.V.1961. Sravnitelnaya kharakteristika almazov iz razlichnykh almazonosnykh rayonov Zapadnoy Yakutii [Comparative characteristics of diamonds from various diamondiferous regions of Western Yakutia]. Geologiya i geofizika. 6:40-50. (in Russian)

Blagulkina V.A.1969. Petrokhimicheskie tipy kimberlitov Sibiri [Petrochemical types of kimberlites of Siberia].Sov. geologiya. 7:6070.(in Russian)

Vasilenko V.B., Zinchuk N.N., Kuznetsova L.G.1997. Petrokhimicheskie modeli almaznykh mestorozhdeniy Yakutii [Petrochemical models of diamond deposits of Yakutia]. Nauka, Novosibirsk,p. 557. (in Russian)

Zinchuk N.N.2000. Postmagmaticheskie mineraly kimberlitov [Postmagmatic kimberlite minerals].Nedra, Moskva,p. 538. (in Russian)

Zinchuk N.N., Zuev V.M., Koptil V.I., Chernyy S.D. 1997. Strategiya vedeniya i rezultaty almazopoiskovykh rabot [Strategy of directing and results of diamond exploration].Gornyyvestnik. 3:53-57. (in Russian).

Zinchuk N.N., Koptil V.I.2003. Tipomorfizm almazov Sibirskoy platform [Typomorphism of the Siberian Platform diamonds]. Nedra, Moskva, p.607. (in Russian)

Zinchuk N.N., Savko A.D., Kraynov A.V.2013. Kimberlity v istorii Zemli [Kimberlites in the Earth history]. Institut geologii VGU, Voronezh, p. 100. (in Russian)

Zinchuk N.N., Spetsius Z.V., Zuenko V.V., Zuev V.M.1993. Kimberlitovaya trubka Udachnaya (veshchestvennyy sostav i usloviya formirovaniya) [Kimberlite pipe Udachnaya (composition and conditions of formation)]. NGU, Novosibirsk,p. 147. (in Russian)

Zinchuk N.N., Kharkiv A.D., Melnik Yu.M., Movchan N.I.1987. Vtorichnye mineraly kimberlitov [Secondary minerals of kimberlites]. Naukova dumka, Kiev, p. 282. (in Russian)

Kaminskiy F.V.1972. Zakonomernosti razmeshcheniya kimberlitovykh (raznofatsialnykh) i rodstvennykh im porod na Sibirskoy platforme [Regularities of allocation of kimberlites (different in facies) and related to them rocks on the Siberian Platform].Dokl. AN SSSR. 204(5):1187-1190. (in Russian)

Kryuchkov A.I., Kharkiv A.D., Pokhilenko N.P.1994. Identifikatsiya kimberlitovykh tel, podvergnutykh dinamicheskomu vozdeystviyu trappov (na primere sistemy tel v rayone trubki Yubileynaya, Yakutiya) [Identification of kimberlite bodies subjected to dynamic impact of traps (on the example of a system of bodies in the region of pipe Yubileynaya, Yakutia)]. Geologiya i geofizika. 3:12-15. (in Russian)

Milashev V.A.1990. Kimberlity i glubinnaya geologiya [Kimberlites and deep geology]. Nedra, Leningrad,p. 167. (in Russian).

Nikishov K.N.1984. Petrologo-mineralogicheskaya modelkimberlitovogo protsessa [Petrologic-mineralogical model of the kimberlite process]. Nauka, Moskva,p. 212. (in Russian)

Orlov Yu.L.1984. Mineralogiya almaza [Mineralogy of diamond]. Nauka, Moskva,p. 264. (in Russian)

Frantsesson E.V.1968. Petrologiya kimberlitov [Petrology of kimberlites]. Nedra, Moskva,p. 198. (in Russian)

Kharkiv A.D., Zinchuk N.N., Kryuchkov A.I.1998. Korennye mestorozhdeniya almazov Mira [Primary diamond deposits of the World]. Nedra, Moskva, p. 555. (in Russian)




DOI: http://dx.doi.org/10.17072/psu.geol.17.2.145

Refbacks

  • There are currently no refbacks.