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Morro da Mina mine, Conselheiro Lafaiete, Minas Gerais, Brazil

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Latitude & Longitude (WGS84): 20° 36' 0'' South , 43° 46' 60'' West
Latitude & Longitude (decimal): -20.60000,-43.78333
Köppen climate type:Cwa : Monsoon-influenced humid subtropical climate
Name(s) in local language(s):Morro da Mina
Other/historical region names associated with this locality:Morro da Mina mine, Queluz de Minas


Gondites and Queluzites, the metamorphosed manganese protores, are regularly distributed in the Greenstone Belt, occupying narrow and elongated zones in the metabasaltic and metaultrabasic parts. These protores were cut by granodioritic bodies, pegmatitic and aplitic veins and faults. (from Mineralienatlas)

A sedimentary assemblage originally belonging to a metamorphosed greenstone sequence. The depositional setting is interpreted as within a bowl of the ocean floor, and evolved from a divergent margin with volcanogenic contribution, and then later subject to sedimentary processes; mainly flows and chemical sedimentation turbidites.
Ores are rhodochrosite, and spessartine and rhodonite. Gangue minerals are quartz, huntite, annite, phlogopite, clinochlore and rutile (all unconfirmed).

Conselheiro Lafaiete was formely named Queluz de Minas.


Mineral List


30 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Archean
2500 - 4000 Ma



ID: 1377278
Archean plutonic rocks

Age: Archean (2500 - 4000 Ma)

Comments: Deep-seated to high-level intrusions are included. Many charnockites, anorthosites, and large ophiolites, classified as plutons, are distinguished in the database using the SIGNIF item. Ophiolites were classified as plutons, even where remnants may be extrusive and/or sedimentary.

Lithology: Plutonic rocks

Reference: Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d. [18]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

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USGS (2005): Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10230798 & 10024441.
P. Leverett, P. Williams & D. Hibbs (2008): Ca-Mg-Fe rich Rhodonite from the Morro da Mina Mine, Conselheiro Lafaiete, Minas Gerais, Brazil. Mineralogical Record 39, 125-130.
Hyrsl, J., Scholz, R. & Romano, A. (2012): Der Morro da Mina in Conselheiro Lafaiete, Brasilien. Mineralien-Welt, 23 (4), 12-19 (in German).

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