Sukhoi Log deposit, Kropotkinsky ore cluster, Lena Gold District, Bodaibo, Irkutskaya Oblast', Prebaikalia (Pribaikal'e), Eastern-Siberian Region, Russia

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Stratabound deposit, hosted in carbonaceous shales.
One of the world's largest gold deposits. Also a PGE deposit.

The ore genesis is related to metamorphic/metasomatic transformations of geochemically specialized carbon-bearing sediments. The platinum/native metals mineralizations preceded the gold ore stage. The reduced metal forms, including PGE, originated during hydrogen-induced reduction coupled with oxidation of hydrocarbons. Gold-bearing quartz-pyrite veinlets were deposited from hot brine hydrothermal fluids.

References

- Parada, S.G. (2002): The Lithogenic Nature of Some Gold Deposits in Carbonaceous–Terrigenous Sequences. Lithology and Mineral Resources 37(3), 239-250.
- Ore Geology Reviews 24, 7-44.
- Distler V.V., Yudovskaya M.A., Razvozhaeva E.A., e.a. (2003) New data on platinum mineralization of gold ores of deposit Sukhoi Log (Lena gold mining area, Russia), - Geochimiya (Geochemistry), 393(4), p. 524-527 (in Rus.)
- http://www.smedg.org.au/apr03.html
- http://www.igem.ru/igem/chem/pt/sukhloge.htm [Link dead. Jul 2011]

Mineral List

Acanthite Albite Altaite Ankerite 'Apatite' Arsenopyrite Baddeleyite Berzelianite 'Bitumen' Brass Calaverite Cervelleite Chalcopyrite 'Chlorite Group' Chromium Cobaltite Cooperite Copper Cubanite Cylindrite Dyscrasite

Enargite Ferberite Galena Galenobismutite Gersdorffite var: Antimonian Gersdorffite Gold var: Electrum Greenockite Heazlewoodite Hessite Indium Iodargyrite Iron Isoferroplatinum Joséite 'K Feldspar' Krennerite Lead Magnesite var: Breunnerite Magnetite

Maucherite Millerite Molybdenite Monazite-(Ce) Monazite-(Nd) Muscovite Nickeline Paragonite Pentlandite Petzite Phengite Platinum Pyrite var: Bravoite Pyrrhotite Quartz Rammelsbergite Rhodium Rutile Safflorite Scheelite

Siderite var: Pistomesite var: Sideroplesite Silver var: Amalgam Skutterudite var: Smaltite Sperrylite Sphalerite Stützite Tetraferroplatinum Tetrahedrite Tin Titanium 'Tourmaline' Tulameenite Tungsten Ullmannite Umangite Violarite Wolframite Xenotime-(Y)

84 entries listed. 67 valid minerals.