Magmatic rocks, fluidolites and rodingites inPaleocene explosive structures of the Tukhaterrane (the Sikhote-Alin)
Perevoznikova E. V., Kazachenko V. T., Lavrik S. N.
Zapiski RMO (Proceedings of the Russian Mineralogical Society). 2018. V. 147. N 1. P. 24-43
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Language: Russian
Abstract
In the Taukha terrane of the Sikhote-Alin there are the outcrops of rocks with unusual structural and textural features, whose composition varies from ultrabasic to intermediate and from subalkaline to alkaline. These are the hornblendites, mica-feldspar, amphibole-feldspar, and carbonatite-like rocks of the vent facies, a dike of phlogopite-olivine rocks, and a small intrusion of melanocratic amphibole gabbro. The magmatic rocks together with fluidolites and rodingites compose explosive structures of the Paleocene age. Rodingites were formed through the process of development of explosive structures resulted from the metasomatic replacement of basic rocks of the vent facies and small intrusive bodies in sedimentary rocks. With the Paleocene explosive structures of Mokrushinskaya and Shirokopadninskaya areas of the Olginsky ore district, breaking the Triassic carbonaceous silicites, the Au-Pd-Pt mineralization, characteristic of which is the «copper gold» (including the Zn- and Ni-bearing varieties of cuproauride and auricupride), native elements, and intermetallic compounds are genetically related.
Key words: magmatic rocks, explosive structures, Au-Pd-Pt mineralization, native elements, intermetallic compounds, Paleocene, Sikhote-Alin.
