|Latitude & Longitude (WGS84):||18° 54' 2'' South , 41° 29' 3'' West|
|Latitude & Longitude (decimal):||-18.90083,-41.48444|
|Köppen climate type:||Aw : Tropical savanna, wet|
The Sapucaia mine is approximately 60 km due east of Governador Valadares, and 16 km ENE of Galiléia. It lies within the Conselheiro Pena Pegmatite District of the Eastern Brazilian Pegmatite Province. Mining began in the early part of the 20th century, but the time of greatest activity was during the Second World War when the mine produced industrial beryl and muscovite. It still produces feldspar and rare minerals for collectors.
The Sapucaia Pegmatite intrudes garnet-staurolite-muscovite-biotite schists of the São Tomé Formation (Rio Doce Group) and sericite quartzites of the Crenaque Group, all of Neoproterozoic age. The pegmatite forms a lenticular body elongated in a NW-SE direction and dips at about 70 degrees to the NE. Weathering processes and the introduction of metasomatic fluids led to the formation of many secondary phosphates. The pegmatite is lithium-rich and is the type locality for eight minerals, all of them phosphates. Among collectors, the mine is best-known for the phosphates (especially iron-rich ones) and rose quartz. It is NOT known for any tourmaline group mineral or any variety of beryl or spodumene.
(Modified by NK, September 2016.)
96 valid minerals. 8 (TL) - type locality of valid minerals.
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
541 - 1000 Ma
|Neoproterozoic crystalline metamorphic rocks|
Age: Neoproterozoic (541 - 1000 Ma)
Lithology: Low grade unclassified metamorphic rock
Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529.