Kufahrite, PtPb, a new mineral from Ledyanoy Creek placer, Galmoenan ultramafic complex, Koryak Highlands, Russia
The result's identifiers
Result code in 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>
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Kufahrite, PtPb, a new mineral from Ledyanoy Creek placer, Galmoenan ultramafic complex, Koryak Highlands, Russia
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10504 - Mineralogy
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Mineralogical Magazine
ISSN
0026-461X
e-ISSN
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Volume of the periodical
85
Issue of the periodical within the volume
2
Country of publishing house
GB - UNITED KINGDOM
Number of pages
8
Pages from-to
254-261
UT code for WoS article
000644703000013
EID of the result in the Scopus database
2-s2.0-85104304388