Epithermal gold mineralization in Costa Rica, Cordillera de Tilarán ? exploration geochemistry and genesis of gold deposits

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F11%3A00000204" target="_blank" >RIV/00025798:_____/11:00000204 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.3190/jgeosci.090" target="_blank" >http://dx.doi.org/10.3190/jgeosci.090</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3190/jgeosci.090" target="_blank" >10.3190/jgeosci.090</a>

Result language

angličtina

Original language name

Epithermal gold mineralization in Costa Rica, Cordillera de Tilarán ? exploration geochemistry and genesis of gold deposits

Original language description

Epithermal gold mineralization in the NW of Costa Rica is confined to Miocene?Pliocene volcanic arc. Gold-bearing quartz veins are related to steep fracture zones affected by mylonitization and pronounced alteration. Native gold (electrum 30?42 wt. % Ag)occurs as inclusions mostly up to 25 ?m grown in quartz and pyrite. The mineral assemblage includes pyrite, sphalerite, chalcopyrite, arsenopyrite and marcasite. Acanthite, pyrargyrite, greenockite, covellite, bornite and cassiterite are scarce. Sb, As,Pb and Hg exhibit significant positive correlations with Au. Fluid inclusions of the H2O type were found in quartz and sphalerite. The older coarse-grained quartz contains primary H2O inclusions with homogenization temperatures between 182 and 276 °C and very low salinity. Primary H2O inclusions in fine-grained younger quartz exhibit homogenization temperatures from 154 to 220 °C and very low salinity up to 3 wt. % NaCl eq. The age of ore pulses is estimated in the period between c. 6.0

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DB - Geology and mineralogy

OECD FORD branch

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Project

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Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2011

Confidentiality

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

Name of the periodical

Journal of Geosciences

ISSN

1802-6222

e-ISSN

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Volume of the periodical

56

Issue of the periodical within the volume

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Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

24

Pages from-to

81-104

UT code for WoS article

000290046200006

EID of the result in the Scopus database

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