—Data on gabbro-dolerite pyrite–chalcopyrite–pyrrhotite, quartz vein sphalerite–chalcopyrite, and associated early and late gold–telluride–palladium mineralization of the Krutoi ore occurrence (Pai-Khoi Ridge, Yugor Peninsula) are presented. The early (magmatic) gold–telluride–palladium mineralization is represented by minerals of the ternary system Ag–Au–Cu, palladium antimonides and stibiotellurides, and platinum arsenides, and the late (hydrothermal) one, by minerals of the binary systems Au–Ag and Au–Pd as well as mercury, lead, and silver tellurides. Sudburyite and testibiopalladite have been first found in the Krutoi ore occurrence; moreover, testibiopalladite has been first discovered in the Pai-Khoi Ridge. Their chemical compositions and Raman spectra have been examined. The results of sulfide sulfur, oxygen, and carbon isotope studies of calcium-containing minerals of chalcopyrite–quartz veinlets suggest assimilation of the material of the host deposits by the ore-forming mantle fluids. The fluid inclusions in the veinlets are divided into nitrogen–methane and carbon dioxide–nitrogen according to the composition of the gas phase. It has been established that the mineral-forming fluids were poorly saturated with gas. Magnesium and calcium salts were predominant in them. The temperature of the formation of quartz in the chalcopyrite–quartz veinlets is close to 300–490 ºC, and sphalerite–chalcopyrite and associated late gold–telluride–palladium mineralization formed at temperatures not exceeding 260 ºC.

Ââåäåíèå Èíòðóçèâíûé ìàãìàòèçì, øèðîêî ïðîÿâëåííûé â öåíòðàëüíîé ÷àñòè Þãîðñêîãî ïîëóîñòðîâà, ïðåäñòàâëåí ñèëëàìè, ðåaeå äàéêàìè õåíãóðñêîãî (öåíòðàëüíî-ïàéõîéñêîãî) êîìïëåêñà, ëîêàëèçîâàííîãî â òåððèãåííîêàðáîíàòíûõ îòëîaeåíèÿõ îðäîâèêà, ðåaeå ñèëóðà è äåâîíà, è ñîñòîÿùåãî ïðåèìóùåñòâåííî èç ïîðîä îñíîâíîãî ñîñòàâà-äîëåðèòîâ, ãàááðîäîëåðèòîâ è îëèâèíîâûõ ãàááðîíîðèòîâ. Ñâÿçàííûå ñ êîìïëåêñîì ìíîãî÷èñëåííûå ïðîÿâëåíèÿ è ïóíêòû ñóëüôèäíîé ìåäíî-íèêåëåâîé ìèíåðàëèçàöèè õàðàêòåðèçóþòñÿ ïðèñóòñòâèåì ìíîãî-÷èñëåííûõ ìèíåðàëîâ ïëàòèíîâîé ãðóïïû (ÌÏÃ) [1, 7].  ðåçóëüòàòå ïðîâåäåííîãî íàìè êîìïëåêñà ìèíåðà-ëîãè÷åñêèõ èññëåäîâàíèé ðóäíîé ìèíåðàëèçàöèè ðóäîïðîÿâëåíèÿ Ñàâàáåéñêèé, â òîì ÷èñëå âïåðâûå èñïîëüçîâàííûì ìåòîäîì ðåíòãåíîòîìîãðàôè÷åñêîãî àíàëèçà, áûëè ïîëó÷åíû íîâûå äàííûå î ýïèãåíåòè÷åñêîé ÌÏÃìèíåðàëèçàöèè. Îáúåêòû è ìåòîäû èññëåäîâàíèÿ Ðóäîïðîÿâëåíèå Ñàâàáåéñêèé (ðèñ. 1) âûÿâëåíî â 1976 ãîäó Õåéÿãèíñêîé ãåîëîãî-ïîèñêîâîé ïàðòèåé è ðàñïîëàãàåòñÿ â ïðåäåëàõ öåíòðàëüíîé ÷àñòè õåíãóðñêîãî ãàááðîäîëåðèòîâîãî êîìïëåêñà.  õîäå ïîèñêîâûõ ìàðøðóòîâ â ðàéîíå îç. Ñàâàáåéòû áûëà îáíàðóaeåíà ñóëüôèäíàÿ ìåäíî-íèêåëåâàÿ ìèíåðàëèçàöèÿ øëèðîâîâêðàïëåííîãî òèïà â ãîðèçîíòå ìåëàíîêðàòîâûõ ñðåäíå-êðèñòàëëè÷åñêèõ êâàðöñîäåðaeàùèõ ãàááðîäîëåðèòîâ [9].  ñòðóêòóðíîì îòíîøåíèè ðóäîïðîÿâëåíèå ïðèóðî-÷åíî ê ñåâåðî-âîñòî÷íîìó ôëàíãó ñëîaeíîäèñëîöèðîâàííîãî èíòðóçèâíîãî òåëà, ñìÿòîãî âìåñòå ñ âìåùàþùèìè ïîðîäàìè îðäîâèêà â ìåëêèå èçîêëèíàëüíûå ñêëàä-ÓÄÊ 553.08(234.82)

The results of mineralogical, geochemical, X-ray, isotopic and spectroscopic studies of coarse-crystalline pyrite (Kyvvozh Formation, Dimtem’el Creek, Central Timan) are presented. Pyrite is characterized by cubic habit and zonal Co distribution. It contains galena, thorite, zircon, monazite, rutile, chlorite, muscovite, quartz, albite, apatite and calcite inclusions. The unit cell parameter of pyrite vary from 5.4137 ± 0.0002 to 5.4187 ± 0.0010 A and correspond to an ideal pyrite. The sulfur isotopic composition of coarse-crystalline pyrite of 15.8‰ indicates its formation as a result of sulfate reduction during epigenesis.