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 language | English |
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| Title of host publication | LIFE WITH ORE DEPOSITS ON EARTH, PROCEEDINGS OF THE 15TH SGA BIENNIAL MEETING, 2019, VOLS 1-4 |
| Publisher | SOC GEOLOGY APPLIED MINERAL DEPOSITS-SGA |
| Pages | 1850-1853 |
| Number of pages | 4 |
| Publication status | Published - 2019 |
| Event | 15th SGA Biennial Meeting on Life with Ore Deposits on Earth - Glasgow Duration: 27 Aug 2019 → 30 Aug 2019 |
Conference
| Conference | 15th SGA Biennial Meeting on Life with Ore Deposits on Earth |
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| City | Glasgow |
| Period | 27.08.2019 → 30.08.2019 |
Keywords
- PETROLOGY