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Posse mine, Mara Rosa, Goiás, Brazil

Latitude: 13°58'15"S
Longitude: 49°10'48"W
Mina de ouro da Posse

Gold deposit of probable epigenetic origin, hosted in felsic volcanic and sedimentary rocks. The low-grade ore occurs along late structures that post-date peak metamorphism of Neoproterozoic age. Most of the gold is intergrown with frohbergite.

References

- Econ Geol. (1995)90:308-321
- Revista Brasileira de Geociências. 30(2):256-260, (2000).
- Thorman, C.H., DeWitt, E., Maron, M.A.C., and Ladeira, E.A. (2001): Major Brazilian gold deposits - 1982 to 1999. Mineralium Deposita 36, 218-227. DOI 10.1007/s001260100170

Mineral List

Actinolite
Albite
'Albite-Anorthite Series'
'Allanite'
'Apatite'
Biotite
Calaverite
Calcite
Chalcopyrite
Epidote
Frohbergite
'Garnet'
Goethite
Gold
Illite
Ilmenite
Kaolinite
Magnetite
Microcline
Muscovite
var: Sericite
Pyrite
Pyrrhotite
Quartz
Sillimanite
Titanite
Zircon


27 entries listed. 21 valid minerals.

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Copyright © Jolyon Ralph and Ida Chau 1993-2011. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 27th Jun 2011 07:34:42
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