“…Barite occurrences are also known within the carbonate sequence in northern and eastern areas of the Pucara basin. ); the Katy manto near Morococha and, according to (Huaman 1983), parts of the Morococha Mine itself; the Malpaso Mine (Kobe 1977(Kobe , 1982, and perhaps part of the Machcan Mine (Hirdes and Amstutz 1978;Hirdes this Vol.). Vanadium minerals, mainly sincosite [CaV(OHiP0 4 )z·3H 2 0, Schaller 1924, formula according to Ramdohr and Strunz 1978], occur in an 18-m-thick horizon of bituminous shales which contain thin layers of volcanic ash Canepa, this Vol.).…”