Gold to aurostibite transformation and formation of Au-Ag-Sb phases: the Krásná Hora deposit, Czech Republic

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F17%3A10366431" target="_blank" >RIV/00216208:11310/17:10366431 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1180/minmag.2016.080.145" target="_blank" >http://dx.doi.org/10.1180/minmag.2016.080.145</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1180/minmag.2016.080.145" target="_blank" >10.1180/minmag.2016.080.145</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Gold to aurostibite transformation and formation of Au-Ag-Sb phases: the Krásná Hora deposit, Czech Republic

Popis výsledku v původním jazyce

Rare phases of the Au-Ag-Sb system were recognized in the Krasna Hora Sb-Au deposit (Sb 1.5-3 wt.%; Au 3-5 ppm), Czech Republic which correspond to auriferous dyscrasite (up to 7 at.% Au), auriferous allargentum (up to 34 at.% Au), and an unnamed phase with composition similar to the eutectics (E-1, E-2) of the experimental Au-Ag-Sb system. The dominant ore mineral is stibnite with rare native antimony, native gold and a Ag-Au alloy. Textural relationships are well established: stibnite (early) -&gt; gold -&gt; aurostibite -&gt; native antimony (late). Gold is present in four generations: Au-1 (0-15 at.% Ag) is the most abundant type; Au-2 (20-70 at.% Ag) forms thin rims along intra-grain boundaries of Au-1; Au-3 and Au-4 are rare and almost pure (similar to 0 at.% Ag). The formation of most of the Au-2 and of Au-Ag-Sb phases is associated with Ag-mobilization coupled with the Au-1 to aurostibite transformation via dissolution-precipitation and solid-state diffusion processes at temperatures &lt;200 degrees C.

Název v anglickém jazyce

Gold to aurostibite transformation and formation of Au-Ag-Sb phases: the Krásná Hora deposit, Czech Republic

Popis výsledku anglicky

Rare phases of the Au-Ag-Sb system were recognized in the Krasna Hora Sb-Au deposit (Sb 1.5-3 wt.%; Au 3-5 ppm), Czech Republic which correspond to auriferous dyscrasite (up to 7 at.% Au), auriferous allargentum (up to 34 at.% Au), and an unnamed phase with composition similar to the eutectics (E-1, E-2) of the experimental Au-Ag-Sb system. The dominant ore mineral is stibnite with rare native antimony, native gold and a Ag-Au alloy. Textural relationships are well established: stibnite (early) -&gt; gold -&gt; aurostibite -&gt; native antimony (late). Gold is present in four generations: Au-1 (0-15 at.% Ag) is the most abundant type; Au-2 (20-70 at.% Ag) forms thin rims along intra-grain boundaries of Au-1; Au-3 and Au-4 are rare and almost pure (similar to 0 at.% Ag). The formation of most of the Au-2 and of Au-Ag-Sb phases is associated with Ag-mobilization coupled with the Au-1 to aurostibite transformation via dissolution-precipitation and solid-state diffusion processes at temperatures &lt;200 degrees C.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

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

81

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

987-999

Kód UT WoS článku

000417988100015

EID výsledku v databázi Scopus

2-s2.0-85030213668