Nipalarsite, Ni8Pd3As4, a new platinum-group mineral from the Monchetundra Intrusion, Kola Peninsula, Russia

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F19%3A00000298" target="_blank" >RIV/00025798:_____/19:00000298 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.minersoc.org/minmag.html" target="_blank" >https://www.minersoc.org/minmag.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1180/mgm.2019.70" target="_blank" >10.1180/mgm.2019.70</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Nipalarsite, Ni8Pd3As4, a new platinum-group mineral from the Monchetundra Intrusion, Kola Peninsula, Russia

Popis výsledku v původním jazyce

Nipalarsite, Ni8Pd3As4, is a new platinum-group mineral (PGM) discovered in the sulfide-bearing orthopyroxenite of the Monchetundra layered intrusion, Kola Peninsula, Russia (67° 52 '22', 32 °47'60'). Nipalarsite forms anhedral grains (5-80 micrometer in size) in intergrowths with sperrylite, kotulskite, hollingworthite, isomertieite, menshikovite, palarstanide, nielsenite and monchetundtraite enclosed in pentlandite, anthophillite, actinolite and chlorite. Nipalarsite is brittle, has a metallic lustre and a grey streak. In plane-polarized light, nipalarsite is light gray with a blue tinge. Reflectance values in air (in percent) are: 50.64 at 589nm, 46.06 at 470nm. 54.12 at 650nm and 48.74 at 546nm. Values of VHN20 fall between 400.5 and 449.2 kg mm–2, with a mean value of 429.9 kg mm–2, corresponding to a Mohs hardness of ∼4. The average result of 27 electron microprobe WDS analyses of natural nipalarsite is (in wt.percent): Ni 44.011, Pd 28.74, Fe0.32, Cu 0.85, Pt 0.01, Au 0.05, As 25.42, Sb 0.05, Te 0.39, total 99.85. The empirical formula (normalized to 15 apfu) is: (Ni8.10Fe0.06)sigma8.16 (Pd2.94Cu0.18)sigma3.12 (As3.68Te0.03)sigma3.71 or, ideally, Ni8Pd3As4. Nipalarsite is cubic, space group Fm m, with a 11.4428(9) angstroem, V 1498.3(4) angstroem3, Z = 8. The strongest lines in the X-ray powder-diffraction pattern of synthetic Ni8Pd3As4 [d in angstroem (I) hkl] are: 2.859(10), 2.623(6), 2.557(6), 2.334(11), 2.201(35), 2.021(100), 1.906(8), 1.429(7). The crystal structure was solved and refined from the single-crystal X-ray-diffraction data of synthetic Ni8Pd3As4. Identity between natural and synthetic nipalarsite is illustrated by an electron backscattered diffraction (EBSD) study of natural nipalarsite. The density calculated on the basis of the empirical formula of nipalarsite is 9.60 g/cm3. The mineral name corresponds to the three main elements: Ni, Pd, and As.

Název v anglickém jazyce

Nipalarsite, Ni8Pd3As4, a new platinum-group mineral from the Monchetundra Intrusion, Kola Peninsula, Russia

Popis výsledku anglicky

Nipalarsite, Ni8Pd3As4, is a new platinum-group mineral (PGM) discovered in the sulfide-bearing orthopyroxenite of the Monchetundra layered intrusion, Kola Peninsula, Russia (67° 52 '22', 32 °47'60'). Nipalarsite forms anhedral grains (5-80 micrometer in size) in intergrowths with sperrylite, kotulskite, hollingworthite, isomertieite, menshikovite, palarstanide, nielsenite and monchetundtraite enclosed in pentlandite, anthophillite, actinolite and chlorite. Nipalarsite is brittle, has a metallic lustre and a grey streak. In plane-polarized light, nipalarsite is light gray with a blue tinge. Reflectance values in air (in percent) are: 50.64 at 589nm, 46.06 at 470nm. 54.12 at 650nm and 48.74 at 546nm. Values of VHN20 fall between 400.5 and 449.2 kg mm–2, with a mean value of 429.9 kg mm–2, corresponding to a Mohs hardness of ∼4. The average result of 27 electron microprobe WDS analyses of natural nipalarsite is (in wt.percent): Ni 44.011, Pd 28.74, Fe0.32, Cu 0.85, Pt 0.01, Au 0.05, As 25.42, Sb 0.05, Te 0.39, total 99.85. The empirical formula (normalized to 15 apfu) is: (Ni8.10Fe0.06)sigma8.16 (Pd2.94Cu0.18)sigma3.12 (As3.68Te0.03)sigma3.71 or, ideally, Ni8Pd3As4. Nipalarsite is cubic, space group Fm m, with a 11.4428(9) angstroem, V 1498.3(4) angstroem3, Z = 8. The strongest lines in the X-ray powder-diffraction pattern of synthetic Ni8Pd3As4 [d in angstroem (I) hkl] are: 2.859(10), 2.623(6), 2.557(6), 2.334(11), 2.201(35), 2.021(100), 1.906(8), 1.429(7). The crystal structure was solved and refined from the single-crystal X-ray-diffraction data of synthetic Ni8Pd3As4. Identity between natural and synthetic nipalarsite is illustrated by an electron backscattered diffraction (EBSD) study of natural nipalarsite. The density calculated on the basis of the empirical formula of nipalarsite is 9.60 g/cm3. The mineral name corresponds to the three main elements: Ni, Pd, and As.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10504 - Mineralogy

Projekt

<a href="/cs/project/GA18-15390S" target="_blank" >GA18-15390S: Experimentální a mineralogický výzkum vybraných chalkogenidů a slitin Pt-kovů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

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

83

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

837-845

Kód UT WoS článku

000510232700008

EID výsledku v databázi Scopus

2-s2.0-85076808204