Stangersite, a new tin germanium sulfide, from the Kateřina mine, Radvanice near Trutnov, Czech Republic

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023272%3A_____%2F20%3A10134888" target="_blank" >RIV/00023272:_____/20:10134888 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.jgeosci.org/content/jgeosci.306_Sejkora.pdf" target="_blank" >http://www.jgeosci.org/content/jgeosci.306_Sejkora.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3190/jgeosci.306" target="_blank" >10.3190/jgeosci.306</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Stangersite, a new tin germanium sulfide, from the Kateřina mine, Radvanice near Trutnov, Czech Republic

Popis výsledku v původním jazyce

The new mineral stangersite was found in the burning waste dump of abandoned Kateřina coal mine at Radvanice near Trutnov, northern Bohemia, Czech Republic. The new mineral occurs as well-formed, flattened, acicular crystals with a cross-section of 2-5 x 20-40 μm and up to 1 cm in length. They constitute random or fan-shaped clusters on rock fragments and on crumbly black ash in association with greenockite, herzenbergite, unnamed GeS2 and GeAsS. Stangersite was also observed as irregular grains, up to 100 μm in size, in the multicomponent aggregates on which the above-described crystals grow. Stangersite formed under reducing conditions by direct crystallization from hot gasses (250-350 oC) containing Cl and F, at a depth of 30-60 cm under the surface of the dump. Stangersite is brittle (aggregates) or elastic, to flexible (acicular crystals). It is orange to yellowish red with a very light yellowish brown streak, translucent to transparent in transmitted light, and has vitreous to adamantine luster. The VHN microhardness is 55 kp.mm-2 (539 MPa) and corresponds to Mohs hardness about 2; the calculated density is 3.98 g.cm-3. In the reflected light, stangersite is light greyish white. Anisotropy under crossed polars is strong with dark brownish grey to reddish-brown or brownish violet rotation tints. The empirical formula, based on electron-microprobe analyses of acicular crystals of stangersite, is Sn1.02Ge0.94(S2.93Se0.10)Σ3.03. Stangersite is monoclinic, P21/c, a = 7.2704(15), b = 10.197(2), c = 6.8463(14) Å, β = 105.34(3)o, with V = 489.5 Å3 and Z = 4. Stangersite has a layered structure, with corrugated (100) layers of Sn2+S5 coordination pyramids and with interspaces filled by lone electron pairs of Sn2+ and [001] chains of Ge4+S4 coordination tetrahedra. The Raman spectrum of stangersite with tentative band assignments is given. We named the mineral after its chemical constituents: Sn (stannum), Ge (germanium) and S (sulphur).

Název v anglickém jazyce

Stangersite, a new tin germanium sulfide, from the Kateřina mine, Radvanice near Trutnov, Czech Republic

Popis výsledku anglicky

The new mineral stangersite was found in the burning waste dump of abandoned Kateřina coal mine at Radvanice near Trutnov, northern Bohemia, Czech Republic. The new mineral occurs as well-formed, flattened, acicular crystals with a cross-section of 2-5 x 20-40 μm and up to 1 cm in length. They constitute random or fan-shaped clusters on rock fragments and on crumbly black ash in association with greenockite, herzenbergite, unnamed GeS2 and GeAsS. Stangersite was also observed as irregular grains, up to 100 μm in size, in the multicomponent aggregates on which the above-described crystals grow. Stangersite formed under reducing conditions by direct crystallization from hot gasses (250-350 oC) containing Cl and F, at a depth of 30-60 cm under the surface of the dump. Stangersite is brittle (aggregates) or elastic, to flexible (acicular crystals). It is orange to yellowish red with a very light yellowish brown streak, translucent to transparent in transmitted light, and has vitreous to adamantine luster. The VHN microhardness is 55 kp.mm-2 (539 MPa) and corresponds to Mohs hardness about 2; the calculated density is 3.98 g.cm-3. In the reflected light, stangersite is light greyish white. Anisotropy under crossed polars is strong with dark brownish grey to reddish-brown or brownish violet rotation tints. The empirical formula, based on electron-microprobe analyses of acicular crystals of stangersite, is Sn1.02Ge0.94(S2.93Se0.10)Σ3.03. Stangersite is monoclinic, P21/c, a = 7.2704(15), b = 10.197(2), c = 6.8463(14) Å, β = 105.34(3)o, with V = 489.5 Å3 and Z = 4. Stangersite has a layered structure, with corrugated (100) layers of Sn2+S5 coordination pyramids and with interspaces filled by lone electron pairs of Sn2+ and [001] chains of Ge4+S4 coordination tetrahedra. The Raman spectrum of stangersite with tentative band assignments is given. We named the mineral after its chemical constituents: Sn (stannum), Ge (germanium) and S (sulphur).

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

2020

Kód důvěrnosti údajů

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

Název periodika

Journal of Geosciences

ISSN

1802-6222

e-ISSN

—

Svazek periodika

65

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

12

Strana od-do

141-152

Kód UT WoS článku

000580587700002

EID výsledku v databázi Scopus

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