First Finds of Platinum and Palladium Minerals in Sulfide Ores of the Khudolaz Intrusive Complex (Southern Urals)

Рахимов, И. Р.; Vishnevskiy, A. V.; Владимиров, А. Г.; Saveliev, D. E.; Пучков, В. Н.; Salikhov, D. N.

doi:10.1134/s1028334x18040153

Cited by 6 publications

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“…Он сопровождался дезинтеграцией ультрамафитов и образованием серпентинитовых меланжей вдоль их контактов. С этим этапом связано преобразование первичных хромититовых тел, образованных [Rakhimov et al, 2018]. на первом этапе, и возможная ремобилизация элементов платиновой группы.…”

Section: геодинамическая обстановка формированияunclassified

“…1-8 -майчнерит, 9 -меренскиит, 10-12 -фрудит, -нестехиометричная фаза, близкая к мончеиту, 14-16 -мончеит, 17-21сперрилит; пустая строка -не определено. Анализ 6 был опубликован в статье [Rakhimov et al, 2018], анализы 1, 2, 4, 5 в статье [Rakhimov et al, 2019]. Note.…”

Section: геодинамическая обстановка формированияunclassified

“…1-8 -michenerite, 9 -merenskyite, 10-12 -froodite, 13 -non-stoichiometric phase close to moncheite, 14-16 -moncheite, 17-21 -sperrylite; empty row -not determined. Analyses: 1, 2, 4, and 5 - [Rakhimov et al, 2019]; 6 - [Rakhimov et al, 2018]. [Rakhimov, 2017].…”

Section: геодинамическая обстановка формированияmentioning

confidence: 99%

“…В известных ранних работах [Buchkovsky et al, 1974;Salikhov et al, 2001] приводятся лишь единичные результаты определений концентраций ЭПГ в сульфидных рудах. Авторами данной работы впервые была выявлена ПММ сульфидных руд худолазовского комплекса [Rakhimov et al, 2018].…”

Section: Introductionunclassified

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Platinum Metal Mineralization of the South Urals Magmatic Complexes: Geological and Geodynamic Characteristics of Formations, Problems of Their Genesis, and Prospects

Рахимов

Савельев

Вишневский

2021

Geodin. tektonofiz.

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In the South Urals, we have identified and investigated two platinum-bearing formations – ophiolite chromitebearing complexes, and the Khudolaz differentiated mafic-ultramafic complex with sulfide Cu-Ni mineralization. The ophiolite chromite-bearing complexes include fragments of the upper mantle and lower crust of the Paleouralian Ocean, which were induced by collision onto the edge of the East European platform. The origin of the Khudolaz complex is related a mantle plume activity. Here, we review and compare the main features of platinum-metal mineralization (PMM) in these two formations.The article presents the results of mineralogical and geochemical studies of PMM associated with chromite and sulfide Cu-Ni ores. In association with chromitites, two types of PMM are distinguished: (1) predominating refractory platinoids in chromitites of the mantle unit of the section, and (2) predominating platinum and palladium in chromitites of the transitional wehrlite-clinopyroxenite complex. Compositions of platinum group minerals (PGM) and relations between their elements and host minerals suggest that the minerals of the ophiolite chromite-bearing complexes are of a restite origin, while the Khudolaz complex results from a combination of magmatic processes and solid-phase redistribution of material. Palladium (michenerite, froodite, merenskyite, borovskite, sudburyite) and platinum (sperrylite, moncheite) minerals are found in magmatic sulfide ores of the Khudolaz complex, which were subjected to hydrothermal metasomatization. Texture observations using electron microscope and optical (reflected light) images, as well as LA ICP MS analyses of sulfides suggest late- and post-magmatic crystallization of PMM in three phases: (1) immiscible metalloid or highly fractionated residual sulfide melts trapped in sulfides; (2) segregation of isomorphic impurities of platinum group elements (PGE) and chalcogenide elements from sulfide solid solutions; and (3) interaction of hydrothermal fluids with soluble sulfides.Prospective for PMM are extended bodies of disseminated chromitites in marginal dunites of the Kraka and Nurali massifs, and wehrlite-clinopyroxenite complexes of the same massifs containing PGE (above 500 ppb). In the Khudolaz complex, promising PMM bodies are low-metasomatized parts of sulfide ore bodies (1 ppm of ΣPGE and above) located in the largest massifs, Severny Buskun and Zapadny Karasaz. Exocontact zones of these intrusions are also promising for PMM.

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Section: геодинамическая обстановка формированияunclassified

Section: геодинамическая обстановка формированияmentioning

confidence: 99%

Section: Introductionunclassified

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Platinum Metal Mineralization of the South Urals Magmatic Complexes: Geological and Geodynamic Characteristics of Formations, Problems of Their Genesis, and Prospects

Рахимов

Савельев

Вишневский

2021

Geodin. tektonofiz.

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“…в сульфидных рудах ряда массивов худолазовского комплекса были установлены повышенные концентрации элементов платиновой группы (ЭПГ) -Pt и Pd, но форма их нахождения была неизвестна. В 2016 г. авторами данной статьи впервые были выявлены самостоятельные кристаллические фазы ЭПГ, находящиеся в виде включений в сульфидных минералах массивов Ташлы-Тау, Северный Бускун-2, Кусеево-2 [18]. В последующем минералы ЭПГ, а также Au и Ag были обнаружены в сульфидных рудах других интрузивных тел худолазовского комплекса.…”

Section: Introductionunclassified

Sulfide-platinum metal mineralization of Khudolaz complex Malyutka altered gabbro massif: hydrothermal influence to the mineral association types

Рахимов¹,

Saveliev²,

Vishnevskiy³

2019

Vestnik IG KomiSC

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В ñòàòьå èзëîжåíы ðåзóëьòàòы èзó÷åíèя ñóëьфèдíых вкðàпëåíèй в ìåòàñîìàòèзèðîвàííых ãàббðîèдàх ìàññèвà Мàëюòкà хóдîëàзîвñкîãî дèффåðåíöèðîвàííîãî кîìпëåкñà Южíîãî Óðàëà. Мàññèв пðåдñòàвëяåò ñîбîй íåбîëьшîй шòîк ñ Cu-Ni-îðóдåíåíèåì в пðèпîдîшвåííîй зîíå.Впåðвыå в эòîì ìàññèвå выявëåíà пëàòèíîìåòàëëьíàя ìèíåðàëèзàöèя (ìàй÷íåðèò, ñпåððèëèò), ëîкàëèзîвàííàя в ñкîпëåíèях ñóëьфèдíых фàз (пèððîòèí, хàëькîпèðèò, пåíòëàíдèò). Óñòàíîвëåíî зíà÷èòåëьíîå вëèяíèå ãèдðîòåðìàëьíî-ìåòà-ñîìàòè÷åñкèх пðîöåññîв íà фîðìèðîвàíèå ðàзëè÷íых òèпîв ñóëьфèдíî-пëàòèíîìåòàëëьíых àññîöèàöèй, ñðåдè кîòîðых выдåëåíî 3 îñíîвíых òèпà, ñîîòвåòñòвóющèх òðёì ñòàдèяì èх îбðàзîвàíèя: ìàãìàòè÷åñкîй, ðàííåй ãèдðîòåðìàëьíîй è пîздíåй ãèдðîòåðìàëьíîй. Пîкàзàíî, ÷òî ãèдðîòåðìàëьíî-ìåòàñîìàòè÷åñкèå пðîöåññы пðèвîдèëè к выíîñó кîìпîíåíòîв èз пåðвè÷íых ñóëьфèдíых àññîöèàöèй ñ дàëьíåйшèì èх пåðåîòëîжåíèåì кàк в пðåдåëàх ìàññèвà, òàк è вî вìåщàющèх пîðîдàх. Íàèбîëåå àкòèвíî выíîñèëèñь Fe è Cu, òîãдà кàк Ni è Co пðåèìóщåñòвåííî кîíöåíòðèðîвàëèñь вî вòîðè÷íых ñóëьфèдíых фàзàх (пèðèò, вèîëàðèò). Пëàòèíîìåòàëëьíàя ìèíåðàëèзàöèя, выявëåííàя в пåðвых двóх òèпàх àññîöèàöèй, ðåзкî ðàзëè÷àåòñя пî ñîñòàвó ìàй÷íåðèòà. Мàй÷íåðèò ìàãìàòè÷åñкîй ñòàдèè ñîдåðжèò пëàòèíó (дî 3.2 %) è íå ñîдåðжèò ñóðьìó, òîãдà кàк ìàй÷íåðèò ðàííåй ãèдðîòåðìàëьíîй ñòàдèè îòëè÷àåòñя кðàйíå выñîкîй ñóðьìяíèñòîñòью (дî 9.7 %) è îòñóòñòвèåì пëàòèíы в ñîñòàвå.Ключевые слова: хóäîлàçîвскèй кîìплåкс, ìàссèв Мàлюткà, гèäðîтåðìàльíыå пðîöåссы, сóльôèäíî-плàтèíîìåтàлльíыå àссîöèàöèè, ìàй÷íåðèт.

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Geochemical evolution of PGE-sulfide mineralization of the Khudolaz differentiated complex in the South urals: The role of R-factor and hydrothermal alteration

Рахимов

Vishnevskiy

Saveliev

2021

Ore Geology Reviews

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First Finds of Platinum and Palladium Minerals in Sulfide Ores of the Khudolaz Intrusive Complex (Southern Urals)

Cited by 6 publications

References 0 publications

Platinum Metal Mineralization of the South Urals Magmatic Complexes: Geological and Geodynamic Characteristics of Formations, Problems of Their Genesis, and Prospects

Platinum Metal Mineralization of the South Urals Magmatic Complexes: Geological and Geodynamic Characteristics of Formations, Problems of Their Genesis, and Prospects

Sulfide-platinum metal mineralization of Khudolaz complex Malyutka altered gabbro massif: hydrothermal influence to the mineral association types

Geochemical evolution of PGE-sulfide mineralization of the Khudolaz differentiated complex in the South urals: The role of R-factor and hydrothermal alteration

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