Nesquehonite from the Pezinok-Kolársky vrch antimony deposit, Malé Karpaty Mts. (Slovak Republic)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023272%3A_____%2F19%3A10134534" target="_blank" >RIV/00023272:_____/19:10134534 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.bullmineral.cz/paper/221" target="_blank" >http://www.bullmineral.cz/paper/221</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Nesquehonite from the Pezinok-Kolársky vrch antimony deposit, Malé Karpaty Mts. (Slovak Republic)

Popis výsledku v původním jazyce

An uncommon post-mining mineral assemblage with nesquehonite, Sr-rich brandholzite and hörnesite was recently discovered at the Kolársky vrch antimony deposit near Pezinok, Malé Karpaty Mts., Slovakia. Nesquehonite occurs as white opaque pseudomorphs after pre-existing flattened crystals and crystalline aggregates of lansfordite up to 18 mm in size associated with aragonite, gypsum, brandholzite and hörnesite. Its refined unit-cell parameters (for the monoclinic space group P21/n) are: a 7.694(1) Å, b 5.364(1) Å, c 12.118(2) Å, β 90.33(2)o and V 500.2(1) Å3. Except of dominant content of Mg only minor amounts of Si were detected in studied nesquehonite. Sr-rich brandholzite occurs as colourless, well developed, tabular pseudohexagonal crystals up to 3 mm in size and its empirical formula based on (Sb+As = 2 apfu) is (Mg0.72Sr0.21)Σ0.93(Sb1.95As0.05)Σ2.00(OH)12.6H2O. Hörnesite forms microscopic spherical aggregates up to 70 μm enclosed in nesquehonite. It has near end-member composition with empirical formula (Mg3.24Fe0.01)Σ3.25(AsO4)1.93(SiO4)0.04(SO4)0.03.8H2O (based on As+Si+S = 2 apfu). The whole supergene assemblage is a product of post-mining weathering of stibnite and arsenopyrite in carbonate (dolomite) rich environment under near-neutral conditions.

Název v anglickém jazyce

Nesquehonite from the Pezinok-Kolársky vrch antimony deposit, Malé Karpaty Mts. (Slovak Republic)

Popis výsledku anglicky

An uncommon post-mining mineral assemblage with nesquehonite, Sr-rich brandholzite and hörnesite was recently discovered at the Kolársky vrch antimony deposit near Pezinok, Malé Karpaty Mts., Slovakia. Nesquehonite occurs as white opaque pseudomorphs after pre-existing flattened crystals and crystalline aggregates of lansfordite up to 18 mm in size associated with aragonite, gypsum, brandholzite and hörnesite. Its refined unit-cell parameters (for the monoclinic space group P21/n) are: a 7.694(1) Å, b 5.364(1) Å, c 12.118(2) Å, β 90.33(2)o and V 500.2(1) Å3. Except of dominant content of Mg only minor amounts of Si were detected in studied nesquehonite. Sr-rich brandholzite occurs as colourless, well developed, tabular pseudohexagonal crystals up to 3 mm in size and its empirical formula based on (Sb+As = 2 apfu) is (Mg0.72Sr0.21)Σ0.93(Sb1.95As0.05)Σ2.00(OH)12.6H2O. Hörnesite forms microscopic spherical aggregates up to 70 μm enclosed in nesquehonite. It has near end-member composition with empirical formula (Mg3.24Fe0.01)Σ3.25(AsO4)1.93(SiO4)0.04(SO4)0.03.8H2O (based on As+Si+S = 2 apfu). The whole supergene assemblage is a product of post-mining weathering of stibnite and arsenopyrite in carbonate (dolomite) rich environment under near-neutral conditions.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

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OECD FORD obor

10504 - Mineralogy

Projekt

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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

Bulletin Mineralogie Petrologie

ISSN

2570-7337

e-ISSN

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Svazek periodika

27

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

4

Strana od-do

370-373

Kód UT WoS článku

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EID výsledku v databázi Scopus

999