... 02 2021 Kufahrite was found in the heavy-mineral concentrate from Ledyanoy Creek placer, related to the Galmoenan Ural–Alaskan type ultramafic complex, located in the Koryak Highlands, Far East Russia ( Fig. 1 ). Ledyanoy Creek placer together with Levtyrinvayam Creek placer produced more...

... (Kamchatsky Mys, Karaginsky Island, and Mamet) and Ural-Alaskan (Galmoenan) complexes of Kamchatka and the Koryak Highlands (Far East Russia) in order to assess the abundance of PGE in awaruite and constrain their mobility under metamorphic and hydrothermal conditions. Studied awaruite from ophiolitic...

... ) and Galmoenan (Tolstykh et al. , in press) placers. However, the Goodnews Bay data show a wide range of compositions among Pt–Fe alloys, like in other occurrences of Alaskan-type complexes: Fifield ( Slansky et al. 1991 ), Nizhne–Tagil’skiy massif ( Genkin 1997 ), Tulameen ( Nixon et al. 1990 ) and Yubdo...

...Fig. 1 The structural position of the Seynav–Galmoenan complex ( Zaytsev et al. 2001 ). ...

...., Kamenetsky, V.S., Ariskin, A.A., Mochalov, A.G., & Sobolev, A.V. (2005) Crustal Evolution of island-arc ultramafic magma: Galmoenan pyroxenite-dunite plutonic complex...

... to the Galmoenan Ural–Alaskan type ultramafic complex at the Koryak Highlands, which is one of the largest platinum-group mineral placers in the world. The Sb counterpart of kufahrite is stumpflite, and Pd–Pb alloys all are the result of post-magmatic processes that likely formed from hydro-thermal fluids...

... of the Pt–(Fe,Cu) nugget has 71.9 at.% Pt, 23.9 at.% Cu, 2.9 at.% Fe, 1.0 at.% Rh, 0.15 at.% Os, and 0.14 at.% Ir. The potential source of the Pt 3 Fe nuggets studied by Augé & Legendre (1992) is an Alaskan-type complex. Indeed, the Pt 3 Cu phase has been recognized in Alaskan-type intrusions...

..., Madagascar 242 EVGENIY G. SIDOROV, ANTON V. KUTYREV, ELENA S. ZHITOVA, ATALI A. AGAKHANOV, ELENA I. SANDIMIROVA, ANNA VYMAZALOVA, VALERY M. CHUBAROV and ANDREY A. ZOLOTAREV : Kufahrite, PtPb, a new mineral from Ledyanoy Creek placer, Galmoenan ultramafi c complex, Koryak Highlands, Russia 254 OLEG I. SIIDRA...

... of PGE mineralization in chromitite of the Kytlym Uralian–Alaskan complex, northern Urals, is described (Zaccarini et al. ). Another description of in situ chromitite and Ni–Cu–PGE mineralization in an Uralian–Alaskan-type intrusion in Russia, at the Galmoenan massif in Kamchatka, also focuses...

...Anton Kutyrev; Andrew M. Mcdonald; Nobumichi Tamura; Louis J. Cabri; Nadezhda Tolstykh; Igor V. Pekov Abstract Sidorovite, ideally PtFe 3 , is a new mineral from the Epilchik ultramafic complex and nearby Snegovaya River placer, Koryak Highlands, Russia. It was found in isoferroplatinum grains...

.... Noteworthy is that phase boundaries in the materials science literature were often determined by indirect techniques ( e.g ., electrical resistance) without checking for homogeneity by direct analysis such as by EPMA and X-ray diffraction. Insight into the complexities at high temperature may be seen...

... placers in Siberia and the Russian Far East . Ore Geol. Rev ., 20 , 1 – 25 . Tolstykh N.D. Sidorov E.G. Kozlov A.P. ( 2004 ): Platinum group element mineralization in lode and placer deposits associated with the Ural-Alaskan-type Galmoenan complex, Koryak-Kamchatka Platinum belt...

... ( Nixon et al . 1990 ); Nizhny Tagil, Russia ( Augé et al . 2005 , Anikina et al . 2014 ); or the Galmoenan and Kondyor ring complexes in the Russian Far East ( Nazimova et al . 2011 , Malitch et al . 2020 ). The intrusions are of relatively small size and elliptical in shape, typically...

... ) and Viravira and Condoto in Colombia ( Tistl 1994 ). Data for sulfide-rich rocks of the Gabbro Akarem complex are from Helmy and Mogessie (2001) . Accessory PGM are found dispersed in dunites (Alto Condoto, Colombia; Kondyor and Galmoenan, Russia), or other mafic lithologies, including pyroxenites...

...), laurite-erlichmanite (RuS 2 -OsS 2 ), cuprorhodsite-malanite (CuRh 2 S 4 -CuPt 2 S 4 ), irarsite-hollingworthite (IrAsS-RhAsS), and bowieite (Rh 2 S 3 ). It has been established that the isoferroplatinum assemblage was generated from a volcanoplutonic picrite complex in the Ureg Nuur area, which...

... serve as a characteristic fingerprint that may be used to trace its source. In an attempt to establish potential source rocks in the Siberian shield for the Pt placers, we compared the mineralogical and geochemical characteristics of PGMs with known ultramafic complexes and also correlated the ages...