Kufahrite, PtPb, a new mineral from Ledyanoy Creek placer, Galmoenan ultramafic complex, Koryak Highlands, Russia

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F21%3A00000070" target="_blank" >RIV/00025798:_____/21:00000070 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.cambridge.org/core/journals/mineralogical-magazine" target="_blank" >https://www.cambridge.org/core/journals/mineralogical-magazine</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1180/mgm.2021.18" target="_blank" >10.1180/mgm.2021.18</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Kufahrite, PtPb, a new mineral from Ledyanoy Creek placer, Galmoenan ultramafic complex, Koryak Highlands, Russia

Popis výsledku v původním jazyce

Kufahrite, PtPb, is a new mineral (IMA2020-045) from the Ledyanoy Creek placer, Koryak Highlands, Russia. The mineral was found inisoferroplatinum (Pt3Fe) grains extracted from a heavy-mineral concentrate, together with tetraferroplatinum (PtFe), tulameenite(Pt2FeCu), native iridium, hollingworthite (RhAsS) and Cr-rich spinel. Kufahrite occurs as part of alteration rims which are formedtogether with tetraferroplatinum after isoferroplatinum, or as grains up to 1 micrometer in size. According to powder X-ray diffraction analyseskufahrite is isotypic to its synthetic analogue, it is hexagonal and crystallises in space group P63/mmc adopting the nickeline structuretype. Its unit-cell parameters are: a = 4.2492(6) angstroem; c = 5.486(6) angstroem; V = 85.78 angstroem3 and Z = 2. The calculated density is 14.80 g/cm–3. Thestrongest diffraction lines are [d,angstroem (I, percent) (hkl)]: 3.052 (80) (101), 2.197 (100) (102), 2.125 (28) (110), 1.747 (18) (210), 1.528 (35)(202), 1.240 (18) (212) and 0.958 (22) (312). The Vickers hardness is 295 kg/mm2 (range 262–320, n = 5), corresponding to a Mohshardness of 4. The empirical formula of kufahrite, calculated from a mean value of 23 electron-microprobe analyses is(Pt0.94Rh0.04)sigma0.98(Pb0.83Sb0.19)sigma1.02. The name (pronounced as [ku fa rait]) honours Fahrid Shakirovitch Kutyev (1943‒1993), a geologistfrom the Institute of Volcanology of USSR Academy of Sciences, who played a key role in the discovery of the Koryak–KamchatkaPlatinum Belt, including the Ledyanoy Creek placer platinum deposit, where the new mineral has been discovered.

Název v anglickém jazyce

Kufahrite, PtPb, a new mineral from Ledyanoy Creek placer, Galmoenan ultramafic complex, Koryak Highlands, Russia

Popis výsledku anglicky

Kufahrite, PtPb, is a new mineral (IMA2020-045) from the Ledyanoy Creek placer, Koryak Highlands, Russia. The mineral was found inisoferroplatinum (Pt3Fe) grains extracted from a heavy-mineral concentrate, together with tetraferroplatinum (PtFe), tulameenite(Pt2FeCu), native iridium, hollingworthite (RhAsS) and Cr-rich spinel. Kufahrite occurs as part of alteration rims which are formedtogether with tetraferroplatinum after isoferroplatinum, or as grains up to 1 micrometer in size. According to powder X-ray diffraction analyseskufahrite is isotypic to its synthetic analogue, it is hexagonal and crystallises in space group P63/mmc adopting the nickeline structuretype. Its unit-cell parameters are: a = 4.2492(6) angstroem; c = 5.486(6) angstroem; V = 85.78 angstroem3 and Z = 2. The calculated density is 14.80 g/cm–3. Thestrongest diffraction lines are [d,angstroem (I, percent) (hkl)]: 3.052 (80) (101), 2.197 (100) (102), 2.125 (28) (110), 1.747 (18) (210), 1.528 (35)(202), 1.240 (18) (212) and 0.958 (22) (312). The Vickers hardness is 295 kg/mm2 (range 262–320, n = 5), corresponding to a Mohshardness of 4. The empirical formula of kufahrite, calculated from a mean value of 23 electron-microprobe analyses is(Pt0.94Rh0.04)sigma0.98(Pb0.83Sb0.19)sigma1.02. The name (pronounced as [ku fa rait]) honours Fahrid Shakirovitch Kutyev (1943‒1993), a geologistfrom the Institute of Volcanology of USSR Academy of Sciences, who played a key role in the discovery of the Koryak–KamchatkaPlatinum Belt, including the Ledyanoy Creek placer platinum deposit, where the new mineral has been discovered.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10504 - Mineralogy

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Mineralogical Magazine

ISSN

0026-461X

e-ISSN

—

Svazek periodika

85

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

254-261

Kód UT WoS článku

000644703000013

EID výsledku v databázi Scopus

2-s2.0-85104304388