Estancia Anchilla Pegmatite District, Tafí del Valle Department, Tucumán, Argentina
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|Latitude & Longitude (WGS84):||26° 18' 40'' South , 66° 0' 53'' West|
|Latitude & Longitude (decimal):||-26.3111111111, -66.0147222222|
Elevation: 2,396 m.asl.
During the last days of December 2012 a visit of exploration led by Raúl Tauber pegmatitics of local bodies was made Stay Anchilla a remote spot located on the eastern slope of the sierra de Quilmes to the Northwest of the Tucumán province,exploited in precarious shape sky opened by mica and currently abandoned.
Access to that site is performed from the town of Colalao del Valle about 6 kilometers westward by a double hand gravel road reaching a fork marked right hand as access to school El Arbolar, moves about 166 metres and appears another fork to the right that must be followed, being this one-hand of gravel that it is in good condition. It is follows this path by approximately four kilometres until its termination in an area of corrals stone for animals and where is a small house with two or three people (26° 18´ 58" S - 66° 01´ 09" W, altitude 2,245 m asl). From this point the access to the pegmatitic bodies must be on foot and climb up the hills and there are no marked paths, only in the first 200 meters from the House, and the ascent towards the sector of Mine San Fenancio lasts around 40 minutes reaching the 2,400 meters above the sea level.
This rare phosphate, Jahnsite(CaMnMg), was found in a mass and nodules of several kilograms of weight and is probably radioactive by the presence of secondary minerals of uranium (the Group of the Autunite phosphates) fluorescent to ultraviolet light and rare earths. This mineral occurs in the area of contact between the pegmatitic body and the metamorphic rock in an area close to mine San Fenancio, not in it, but in a body pegmatitic which is part of the stay Anchilla set, in the vicinity of it and being the only one where I detect to date this place. Different samples were analyzed by XDR-TB in the Department of Earth & Environmental Sciences of New Orleans University, Louisiana, U. S. A. by Professor Alexander Falster. Another group of samples were also analyzed by XDR-TB by Dr. Alfredo Matías Kuck in the National University of Buenos Aires, Argentina, reaching the same conclusion in both cases.
22 entries listed. 12 valid minerals.
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Raúl J. Tauber Larry (2012).