Santa Rita |
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Goias, Brazil |
Main commodities:
Au
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Super Porphyry Cu and Au
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IOCG Deposits - 70 papers
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All papers now Open Access.
Available as Full Text for direct download or on request. |
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The Santa Rita gold deposit is located in Central Goias, Brazil.
It is hosted by Meso- to Neoproterozoic carbonate-pelite sequences of the Paranoá Group that have been metamorphosed in the greenschist facies.
Ore occurs as pyrite-bearing quartz-carbonate veins which are structurally controlled by WNW-ESE high-angle faults and fractures resulting from the reactivation of older NE-SW lineaments.
Pyrite, which is the sole sulphide, exhibits growth zones enriched in Co, Ni and As (up to 4 wt%). Hydrothermal alteration zones are enriched in Co, Ni and As and are characterised by diffuse albitisation, carbonatisation, silicification and pyritisation.
The most recent source geological information used to prepare this decription was dated: 1993.
This description is a summary from published sources, the chief of which are listed below. © Copyright Porter GeoConsultancy Pty Ltd. Unauthorised copying, reproduction, storage or dissemination prohibited.
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Giuliani G, Olivo G R, Marini O J and Michel D 1993 - The Santa Rita gold deposit in the Proterozoic Paranoa Group, Goias, Brazil: An example of fluid mixing during ore deposition: in Ore Geology Reviews v8 pp 503-523
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Michel D, Giuliani G, Olivo G B and Marini O J, 1994 - As growth banding and the presence of Au in pyrites from the Santa Rita gold vein deposit hosted in Proterozoic metasediments, Goias State, Brazil: in Econ. Geol. v89 pp 193-200
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Tsuruoka, S., Monecke, T. and Reynolds, T.J., 2021 - Evolution of the Magmatic-Hydrothermal System at the Santa Rita Porphyry Cu Deposit, New Mexico, USA: Importance of Intermediate-Density Fluids in Ore Formation: in Econ. Geol. v.116, pp. 1267-1284.
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Porter GeoConsultancy Pty Ltd (PorterGeo) provides access to this database at no charge. It is largely based on scientific papers and reports in the public domain, and was current when the sources consulted were published. While PorterGeo endeavour to ensure the information was accurate at the time of compilation and subsequent updating, PorterGeo, its employees and servants: i). do not warrant, or make any representation regarding the use, or results of the use of the information contained herein as to its correctness, accuracy, currency, or otherwise; and ii). expressly disclaim all liability or responsibility to any person using the information or conclusions contained herein.
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