Composition and parageneses evaluation of picroilmenites found in sedimentary complexes to forecast their primary sources

Authors

  • В. В. Андреев V.N. Karazin Kharkiv National University, Ukraine
  • А. А. Корховой V.N. Karazin Kharkiv National University, Ukraine
  • А. В. Чуенко V.N. Karazin Kharkiv National University, Ukraine

Keywords:

mineralogical criteria, composition and parageneses of picroilmenites, kimberlte indicator minerals (KIM), primary sources

Abstract

Heavy concentrate and mineralogical analysis of the composition and typomorphic peculiarities of picroilmenites and their parageneses found in the sedimentary complexes of the Olenyok region of western Yakutia has been carried out to forecast their primary sources. The form, survival rate and quantity of picroilmenite grains have been studied in the stream sediment sample. Their chemical composition has been determined and diagrams of TiO2-MgO and Cr2O3-MgO content have been made. Within the boundaries of the region the dispersion halo of kimberlite indicator mineral (KIM) in the modern sediments is characterized by the highest survival rate in comparison with the neighboring territories that along with their superior size distribution and hurricane contents, clearly indicates the immediate vicinity of primary sources. Ulakhan-Yurege field,that has been forecast includes the basins of the Ulakhan-Yurege, Ulakhan-Talahtah and Tustakh rivers and is characterized by local KIM halo with a high survival rate in Lower Cretaceous and modern sediments (picroilmenite grain of class I and II up to 40%).

Author Biographies

В. В. Андреев, V.N. Karazin Kharkiv National University

PhD (Geology and Mineralogy)

А. А. Корховой, V.N. Karazin Kharkiv National University

Postgraduate Student

А. В. Чуенко, V.N. Karazin Kharkiv National University

Researcher

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Published

2013-12-05

Issue

No. 39 (1084) (2013)

Section

Geology

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Copyright (c) 2015 В. В. Андреев, А. А. Корховой, А. В. Чуенко

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