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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
GeoHash:G#: 7h2fg9vuq
Locality type:Mine
Köppen climate type:Cwa : Monsoon-influenced humid subtropical climate
Name(s) in local language(s):Morro da Mina
Other/historical 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.

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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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