Near end-member shenzhuangite, NiFeS2, found in Muong Nong-type tektites from Laos

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F19%3A00507835" target="_blank" >RIV/67985831:_____/19:00507835 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/19:10398308

Výsledek na webu

<a href="https://pubs.geoscienceworld.org/msa/ammin/article/104/8/1165/572762/Near-endmember-shenzhuangite-NiFeS2-found-in-Muong" target="_blank" >https://pubs.geoscienceworld.org/msa/ammin/article/104/8/1165/572762/Near-endmember-shenzhuangite-NiFeS2-found-in-Muong</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2138/am-2019-6930" target="_blank" >10.2138/am-2019-6930</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Near end-member shenzhuangite, NiFeS2, found in Muong Nong-type tektites from Laos

Popis výsledku v původním jazyce

Australasian Muong Nong-type tektites from the locality centered at 16.46150 degrees N, 106.48917 degrees E in Laos contain sporadic spherical heterogeneous sulfide inclusions less than 10 mu m in diameter, which have been identified by electron probe microanalyzer and electron backscatter diffraction to represent a mixture of rare mineral shenzhuangite with a pyrrhotite polytype (possibly troilite). Contrary to type shenzhuangite found in the shocked L6 chondrite Suizhou, the mineral embedded in the tektite glass is nearly free of copper, making the composition close to its expected end-member that has not yet been found in nature, the empirical formula closest to ideal end-member composition based on four atoms per formula unit is Ni1.007Fe0.998Cu0.016Co0.058S1.922. The described occurrence also represents the first find of shenzhuangite in terrestrial material. Presented is the Raman spectrum for shenzhuangite with the tentative assignment of spectral bands based on the analogy with synthetic chalcopyrite-structured phases. The chemical composition of shenzhuangite close to NiFeS2 is not consistent with any stable phase in the Fe-Ni-S system up to melting temperature. Available data so far on phase relations in this system do not allow unambiguous interpretation of conditions under which the sulfide association within inclusions had formed.

Název v anglickém jazyce

Near end-member shenzhuangite, NiFeS2, found in Muong Nong-type tektites from Laos

Popis výsledku anglicky

Australasian Muong Nong-type tektites from the locality centered at 16.46150 degrees N, 106.48917 degrees E in Laos contain sporadic spherical heterogeneous sulfide inclusions less than 10 mu m in diameter, which have been identified by electron probe microanalyzer and electron backscatter diffraction to represent a mixture of rare mineral shenzhuangite with a pyrrhotite polytype (possibly troilite). Contrary to type shenzhuangite found in the shocked L6 chondrite Suizhou, the mineral embedded in the tektite glass is nearly free of copper, making the composition close to its expected end-member that has not yet been found in nature, the empirical formula closest to ideal end-member composition based on four atoms per formula unit is Ni1.007Fe0.998Cu0.016Co0.058S1.922. The described occurrence also represents the first find of shenzhuangite in terrestrial material. Presented is the Raman spectrum for shenzhuangite with the tentative assignment of spectral bands based on the analogy with synthetic chalcopyrite-structured phases. The chemical composition of shenzhuangite close to NiFeS2 is not consistent with any stable phase in the Fe-Ni-S system up to melting temperature. Available data so far on phase relations in this system do not allow unambiguous interpretation of conditions under which the sulfide association within inclusions had formed.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10504 - Mineralogy

Projekt

<a href="/cs/project/GA17-27099S" target="_blank" >GA17-27099S: Variabilita australskoasijských tektitů v širším okolí Muong Nong v Laosu - prostředek k hledání jejich zdrojových hornin a mateřského kráteru</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

American Mineralogist

ISSN

0003-004X

e-ISSN

—

Svazek periodika

104

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

1165-1172

Kód UT WoS článku

000477831300008

EID výsledku v databázi Scopus

2-s2.0-85073901447