Although incompletely explored, the best known of the titanium deposits in the state of Oaxaca are those in the Etla District, covering parts of the San Francisco Telixtlahuaca, San Pablo Huitzo, and Santa Maria Tenexpan municipalities (Fig. 1). The deposits are predominantly ilmenite, with iron, phosphorous, and occasional very subordinate rutile. They form part of 2,450 hectares of the Mineral Reserves Zone protected by the Mining Development Commission (as published in the Diario Oficial of Oct. 8, 1973) in the Sierra Madre de Oaxaca physiographic province. The geologic setting is almost exclusively a region of late Precambrian metamorphic rocks in an area of more or less uniform relief.
Trails lead to the area from the villages of Telixtlahuaca and Huitzo, 120 km from Oaxaca on either the Oaxaca-Mexico highway or by railroad. Year-round passable trails that formerly interconnected the ilmenite deposits during the exploration period have been abandoned.
Figures & Tables
This volume was developed, produced, and privately printed in Mexico, in Spanish, by the late Ing. G.P. Salas in 1988, as a Mexican contribution to the Geology of North America, with the understanding that it would be translated into English for inclusion in the set. The translation is by Dr. Cecily Petzall of Caracas, Venezuela, with considerable figure translation and redrafting provided by GSA. Salas worked on the volume until his death, with much valuable help from Ing. Hugo Cortez Guzmán. The result is a valuable English-language synthesis of the information available to Salas in the early to mid-1980s about the geothermal, coal, and metal-mining sectors (and some non-metallic resources) of the economic geology of Mexico.