Bowlesite, PtSnS, a new platinum group mineral (PGM) from the Merensky Reef of the Bushveld Complex, South Africa

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F20%3A00000118" target="_blank" >RIV/00025798:_____/20:00000118 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.cambridge.org/core/journals/mineralogical-magazine/article/abs/bowlesite-ptsns-a-new-platinum-group-mineral-pgm-from-the-merensky-reef-of-the-bushveld-complex-south-africa/616DA68ADE538D1331F0AAD10B91077F" target="_blank" >https://www.cambridge.org/core/journals/mineralogical-magazine/article/abs/bowlesite-ptsns-a-new-platinum-group-mineral-pgm-from-the-merensky-reef-of-the-bushveld-complex-south-africa/616DA68ADE538D1331F0AAD10B91077F</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1180/mgm.2020.32" target="_blank" >10.1180/mgm.2020.32</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Bowlesite, PtSnS, a new platinum group mineral (PGM) from the Merensky Reef of the Bushveld Complex, South Africa

Popis výsledku v původním jazyce

Bowlesite is a new mineral discovered in the Merensky Reef of the Rustenburg Platinum Mine, Bushveld complex, South Africa.Bowlesite forms tiny grains (maximum dimension 20 micrometer). It is associated with sulfides including chalcopyrite, pyrrhotite and pentlandite,in contact with silicates including plagioclase, pyroxene- and minor serpentine-subgroup and amphibole-supergroup minerals.Bowlesite is brittle and has a metallic lustre. In plane-polarised light, bowlesite has a light bluish grey colour. It shows weak bireflectance,no pleochroism and has weak anisotropism. Internal reflections were not observed. Reflectance values of bowlesite in air (R1, R2 in percent)are: 50.3–51.4 at 470 nm, 48.5–48.9 at 546 nm, 47.9–48.6 at 589 nm and 47.8–48.7 at 650 nm. Ten spot analyses of bowlesite give theaverage composition: Pt 56.85, Pd 0.02, Sn 34.03 and S 9.15, total 100.05 wt.percent, corresponding to the empirical formula(Pt1.001Pd0.001)sigma1.002Sn0.997S1.001, based on 3 atoms per formula unit. The simplified formula is PtSnS. Due to the small size ofbowlesite, the crystal structure was solved and refined from the powder X-ray-diffraction data of synthetic PtSnS. The calculateddensity is 10.06 g⋅cm–3. The mineral is orthorhombic, space group: Pca21 (#29) with a = 6.11511(10), b = 6.12383(10), c = 6.09667(11) angstroem,V = 228.31(1) angstroem3 and Z = 4. Bowlesite is isotypic with cobaltite, CoAsS. The origin of bowlesite is probably related to low-T exsolution ofPt–Sn phases from high-T sulfides crystallised from the sulfide melt. The mineral honours Dr. John Bowles (Manchester University, UK)for his contributions to ore mineralogy and mineral deposits related to mafic–ultramafic rocks.

Název v anglickém jazyce

Bowlesite, PtSnS, a new platinum group mineral (PGM) from the Merensky Reef of the Bushveld Complex, South Africa

Popis výsledku anglicky

Bowlesite is a new mineral discovered in the Merensky Reef of the Rustenburg Platinum Mine, Bushveld complex, South Africa.Bowlesite forms tiny grains (maximum dimension 20 micrometer). It is associated with sulfides including chalcopyrite, pyrrhotite and pentlandite,in contact with silicates including plagioclase, pyroxene- and minor serpentine-subgroup and amphibole-supergroup minerals.Bowlesite is brittle and has a metallic lustre. In plane-polarised light, bowlesite has a light bluish grey colour. It shows weak bireflectance,no pleochroism and has weak anisotropism. Internal reflections were not observed. Reflectance values of bowlesite in air (R1, R2 in percent)are: 50.3–51.4 at 470 nm, 48.5–48.9 at 546 nm, 47.9–48.6 at 589 nm and 47.8–48.7 at 650 nm. Ten spot analyses of bowlesite give theaverage composition: Pt 56.85, Pd 0.02, Sn 34.03 and S 9.15, total 100.05 wt.percent, corresponding to the empirical formula(Pt1.001Pd0.001)sigma1.002Sn0.997S1.001, based on 3 atoms per formula unit. The simplified formula is PtSnS. Due to the small size ofbowlesite, the crystal structure was solved and refined from the powder X-ray-diffraction data of synthetic PtSnS. The calculateddensity is 10.06 g⋅cm–3. The mineral is orthorhombic, space group: Pca21 (#29) with a = 6.11511(10), b = 6.12383(10), c = 6.09667(11) angstroem,V = 228.31(1) angstroem3 and Z = 4. Bowlesite is isotypic with cobaltite, CoAsS. The origin of bowlesite is probably related to low-T exsolution ofPt–Sn phases from high-T sulfides crystallised from the sulfide melt. The mineral honours Dr. John Bowles (Manchester University, UK)for his contributions to ore mineralogy and mineral deposits related to mafic–ultramafic rocks.

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

2020

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

84

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

468-476

Kód UT WoS článku

000545319900012

EID výsledku v databázi Scopus

2-s2.0-85091070541