Gal'moenan ultrabasic massif, Korf, Olyutorsky district, Koryak Okrug, Kamchatka Krai, Russia (original) (raw)

Gal'moenan ultrabasic massif, Korf, Olyutorsky district, Koryak Okrug, Kamchatka Krai, Russiai

Mindat Locality ID:

212740

Long-form identifier:

mindat:1:2:212740:1

8e21fce4-76cc-43f1-9a64-d7f3dc554efb

Other/historical names associated with this locality:

Gal'moenan ultrabasic complex

Russian:

Ультраосновный массив Гальмоэнан (Гальмоэнанский ультраосновный массив), Корякский округ, Камчатский край, Россия

Ural–Alaskan type layered intrusion, mainly consisting of dunite, clinopyroxenite, and gabbro (wehrlite and serpentinite also occur). Dunites occupy ca. 70% of the area in the center, and clinopyroxenite, wehrlite, and gabbro occur near the periphery.

The numerous lode occurrences of PGMs (Platinum-Group Metals) are related to three types of ore deposits: Pt-bearing dunites, Pt-bearing chromitites, and PGMs hosted in titanomagnetite-bearing clinopyroxenites. Chromian spinel (chromite) forms layers, veinlets and schlieren up to 30 cm thick in dunite. Isoferroplatinum is the main PGM mineral in all the three types of ore deposits. The secondary Pt–Fe–Cu alloys rim the Pt–Fe grains and make up a complete series from tetraferroplatinum to tulameenite and a limited series toward the Cu3Pt phase (tomamaeite) with sporadic Ni admixture up to 5 at %. Tetraferroplatinum is characteristic of dunite, while Cu-rich compounds (tulameenite) are characteristic of chromitite. Other PGM were identified as inclusions in platinum or as intergrowths with it. The Pt–Os and Pt–Ir assemblages are distinguished; the latter is prevalent. Laurite forms rare inclusions; sperrylite rims tulameenite or forms openwork individuals in serpentine, and small irarsite grains at the front of substitution of platinum for tulameenite occur in association with Fe–Pt alloys. Hexaferrum, Pt oxides, and porous magnetite occur sporadically at the contact between platinum and serpentine (Kozlov et al., 2011). The phase (Pt0.96Fe0.02)(As1.17Sb0.75S0.09), a member of the sperrylite – geversite solid solution, has been found in a lode (Tolstykh et al., 2004).

Streams draining the intrusion (Levtyrinyvayam River in the east, Gal'motapel'vayam river in the north; Vetvisty and Penisty creeks in the west, Ledyanoy Creek to the southwest, and Yuzhny Creek in the south) have formed PGM placers around it.

Ascribable to the ultrabasic massif are the three currently worked PGM placers along the River Levtyrinyvayam and the creeks Ledyanoy and Penisty, and numerous lode deposits.

Minor elements, which are indicators of conditions of formation of the Pt–Fe alloy, exhibit different concentrations in lodes and in the nearby placers. Platinum–iron alloy from the Levtyrinyvayam placer, the farthest from the source, represents the eroded upper apical part of the intrusion, and contains mainly Pd. The Penisty placer receives platinum from dunite and pyroxenite of a marginal facies of the complex, and thus platinum–iron alloy contains Rh–Ir and Pd–Rh. Placer isoferroplatinum deposited along the Ledyanoy Creek, which drains dunite and chromite-bearing rocks in the south of the intrusion, is rich in Ir (up to 6.98 wt.%), as is the Pt–Fe alloy in the Gal’moenan complex (4.34 wt.% Ir). Most grains contain also a relatively high Rh content. Isoferroplatinum + iridium and isoferroplatinum + osmium are two main primary magmatic parageneses revealed in both placers and lodes, though the first is more commonly found in lodes and in the Ledyanoy Creek placer, and the latter in the Levtyrinyvayam River placer. Lodes mostly contain laurite and the Levtyrinyvayam placer bears all varieties of (Ru,Os)S2, including Ru-free Rh-rich erlichmanite (Os,Rh)S2. The irarsite – hollingworthite series predominates in lodes, and the irarsite – platarsite and osarsite – platarsite series predominate in the Levtyrinyvayam placer. Sperrylite in lodes may contain up to 6.94 wt.% Sb, and thus differs from that in placers.

The local pentlandite relics (found within awaruite) are unusually rich in Os, at max. 540 ppm.

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51 valid minerals. 1 (TL) - type locality of valid minerals.

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• Igneous rock
  • Normal crystalline igneous rock
    * Coarse-grained ("plutonic") crystalline igneous rock
    * Coarse-grained-ultramafic-rock
    * Pyroxenite
  • Exotic crystalline igneous rock
• Metamorphic rock

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Localities in this Region

• Kamchatka Krai
  • Koryak Okrug
    * Olyutorsky district
    * Korf
    * Gal'moenan ultrabasic massif
    * Ledyanoy Creek placer
    * Levtyrinyvayam River placer
    * Penisty Creek placer

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References

Kutyrev, A., Kamenetsky, V.S., Kontonikas-Charos, A., Savelyev, D.P., Yakich, T.Yu., Sandimirova, E.I., Moskaleva, S.V. (2023): Behavior of Platinum-Group Elements during Hydrous Metamorphism: Constraints from Awaruite (Ni3Fe) Mineralization. Lithosphere, 2023, 126.

Astrakhantsev, O.V., Batanova, V.T., and Perfilyev, A.S. [Астраханцев, О.В., Батанова, В.Т., и Перфильев, Б.Т.] (1991) The structure of the Gal’moenan dunite-clinopyroxenite–gabbro complex [Строение Гальмоэнанского дунит-клинопироксенит-габбрового массива]. Geotectonics [Геотектоника], 2, 47–62 (in Russian).

Batanova, V.T., Astrakhantsev, O.V., and Sidorov, E.G. [Батанова, В.Т., Астраханцев, О.В., и Сидоров, Е.Г.] (1991) Dunites from the ultrabasic–gabbro Gal’moenan massif (Koryak Upland) [Дуниты Гальмоэнанского гипербазит-габбрового массива (Корякское нагорье)]. Bulletin of the Academy of Sciences of the USSR [Известия Академии Наук СССР], Geological series [Серия геологическая] 1, 24-35 (in Russian).

Polyanin, V.S., Vedernikov, N.N., Polyanina, T.A., and Kozlov, A.P. [Полянин, В.С., Ведерников, Н.Н., Полянина, Т.А., и Козлов, А.П.] (2000) Geological structure and formation history of the Gal’moenan mafite-ultramafite massif [Геологическое строение и история фор­мирования Гальмоэнанского мафит-ультрамафитового массива]. Otechestvennaya Geologiya (National Geology [Отечественная геология] 1, 34-40 (in Russian).

Sidorov, E.G., Kozlov, A.P., Landa, E.A., Osipenko, A.B., and Markovsky, B.A. [Сидоров, Е.Г., Козлов, А.П., Ланда, Э.А., Осипенко, А.Б., и Марковский, Б.А.] (2001) Petrogeochemical properties of the rocks of Galmoenan mafic ultra-mafic massif, Koryakia [Петрогеохимические особенности пород Гальмоэнанского базит-гипербазитового массива, Корякия]. In: Petrology and metallogeny of the mafic-ultramafic complexes of Kamchatka [Петрология и металлогения базит-гипербазитовых комплексов Камчатки]. Nauchny Mir [Научный Мир], Moscow, pages 14-30 (in Russian).

Kuznetsov, I.V., Nazimova, Yu.V., and Korneev, S.I. [Кузнецов, И.В., Назимова, Ю.В., и Корнеев, С.И.] (2002) Platinum-group minerals in dunites of the Gal’moenan massif (Koryak Highlands) [Минералы платиновой группы в дунитах Гальмоэнанского массива (Корякское нагорье)]. Zapiski Rossiyskogo Mineralogicheskogo Obshchestva [Записки Российского Mинералогического Oбщества], 131, 2, 72-83 (in Russian).

Osipenko, A.B., Sidorov, E.G., Kozlov, A.P., Landa, E.A. Ledneva, G.V., and Markovsky, B.A. [Осипенко, А.Б., Сидоров, Е.Г., Козлов, А.П., Ланда, Э.А., Леднева, Г.В., и Марковский, Б.А.] (2002) Geochemistry of the magma series of the Gal'moenan basite-ultrabasite massif, Koryakia [Геохимия магматических серий Гальмоэнанского базит-гипербазитового массива, Корякия]. Geology of the Pacific Oceanic (Pacific Geology) [Тихоокеанская геология], 21, 2, 79-91 (in Russian).

Nazimova, Yu.V., Zaitsev, V.P., and Mochalov, A.G. [Назимова, Ю.В., Зайцев, В.П., и Мочалов, А.Г.] (2003) Platinum-group minerals of the Gal'moenan gabbro-pyroxenite-dunite massif in the southern part of the Koryak highlands (Russia) [Минералы платиновой группы габбро-пироксенит-дунитового массива Гальмоэнан южной части Корякского нагорья (Россия)]. Geology of Ore Deposits [Геология рудных месторождений], 45, № 6, 547-565 (in Russian).

Batanova, V.G, Pertsev, A., Kamenetsky, V., Ariskin, A. Mochalov, A., and Sobolev, A. (2004) Parental magmas to the Alaskan-type platinum-bearing plutons: Evidence from Galmoenan massif (Far East, Russia). American Geophysical Union, Fall Meeting 2004, abstract id. V13B-1467.

Sidorov, E.G., Osipenko, A.B., Kozlov, A.P., and Kospgoyanov, A.I. [Сидоров, Е.Г., Осипенко, А.Б., Козлов, А.П., и Коспгоянов, А.И.] (2004) Chromite mineralization in rocks of the mafic-ultramafic Gal’moenan massif, Koryakia (Russia) [Хромитовая минерализация в породах мафит-ультрамафитового массива Гальмоэнан, Корякия (Россия)]. Geology of Ore Deposits [Геология рудных месторождений], 46, №3, 235-252 (in Russian).

Sidorov, E.G., Tolstykh, N.D., Kozlov, A.P., and Chubarov, V.M. [Толстых, Н.Д., Сидоров, Е.Г., Видик, С.В., Козлов, и Чубаров, В.М.] (2009) The lode mineralization of the Gal'moenan massif, Koryakiya (Ural-Alaskan type) [Коренная минерализация массива Гальмоэнан, Корякия (Урало-Аляскинский тип)]. In: Koroteev, V.A. (chief ed.) [Коротеев, В.А. (отв. ред.)], Ultramafic-mafic complexes in folded regions and related deposits. Proceedings of the 3d International Conference [Ультрабазит-базитовые комплексы складчатых областей и связанные с ними месторождения. Материалы третьей международной конференции]. Institute of Geology and Geochemistry, Ural Branch of Russian Academy of Sciences [Институт геологии и геохимии УрО РАН], Yekaterinburg, Vol. 2, pages 189-193 (in Russian).

Seltmann, R., Soloviev, S., Shatov, V., Pirajno, F., Naumov, E., Cherkasov, S. (2010) Metallogeny of Siberia: tectonic, geologic and metallogenic settings of selected significant deposits*. Australian Journal of Earth Sciences, 57 (6) 655-706 doi:10.1080/08120099.2010.505277

Kozlov, A.P., Chanturiya, V.A., Sidorov, E.G., Tolstykh, N.D., and Telegin, Yu.M. (2011) Large-volume platinum ore deposits in zonal mafic-ultramafic complexes of the Ural-Alaskan type and the outlook for their development. Geology of Ore Deposits (English version), 53(5), 374-389.

Sidorov, E.G., Kozlov, A.P., and Tolstykh, N.D. [Сидоров Е.Г., Козлов, А.П., и Толстых, Н.Д.] (2012) The Galmoenan mafic-ultramafic massif and its platinum mineralization [Гальмоэнанский базит-гипербазитовый массив и его платиноносность]. Nauchny Mir [Научный Мир], Moscow, 288 pp. (in Russian).

Sidorov, E.G., Sandimirova, E.I., Chubarov, V.M., and Ananyev, V.V. [Сидоров Е.Г., Сандимирова Е.И., Чубаров В.М., Ананьев В.В.] (2018) Accessory Minerals of the mafic-ultramafic massif Gal'moenan, (Koryakskoye Upland, Kamchatka) [Акцессорные минералы 6азит-гипербазитового массива Гальмоэнан (Корякское нагорье, Камчатка)]. Zapiski Rossiyskogo Mineralogicheskogo Obshchestva [Записки Российского Mинералогического Oбщества], 147, 2, 44-64 (in Russian).