Abstract

Lamproites and lamprophyres from Ryabinovoye gold deposit (Aldan Shield, Siberia) were studied. We demonstrate that these rocks, varying from Ol-Di-Phl-lamproites to syenite-porphyries, form a continuous series of lamproite magma differentiation. At the stage of phlogopite and clinopyroxene crystallization, silicate-carbonate and then carbonate-salt immiscibilities occur. A suggestion is that during these processes LREE, Y, U, Sr and Ba distribute to a phosphate-fluoride fraction and probably accumulate in apatite-fluorite gangues. Based on our results and considering existing data onore-bearing massifs within Central Aldan (lnagli, Ryabinoviy) and also of the Nam-Xe ore-bearing province (Vietnam), we concluded that Au, PGE and Th-U-Ba-REE deposits can be genetically connected with low-titanium lamproite magmas.

Original languageEnglish
Title of host publicationLIFE WITH ORE DEPOSITS ON EARTH, PROCEEDINGS OF THE 15TH SGA BIENNIAL MEETING, 2019, VOLS 1-4
PublisherSOC GEOLOGY APPLIED MINERAL DEPOSITS-SGA
Pages1850-1853
Number of pages4
Publication statusPublished - 2019
Event15th SGA Biennial Meeting on Life with Ore Deposits on Earth - Glasgow
Duration: 27 Aug 201930 Aug 2019

Conference

Conference15th SGA Biennial Meeting on Life with Ore Deposits on Earth
CityGlasgow
Period27.08.201930.08.2019

Keywords

  • PETROLOGY

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