Lead and zinc resources of Brazil
Explore the source record for details and available documents.
Open-File Report↗
Geology topics
Raymond H. Nagell
Publications and source records attributed to Raymond H. Nagell.
Sulfur, fluorspar, magnesite, and aluminous chromite in Pakistan
Reports and analyses on elemental sulfur, fluorspar, magnesite, and aluminous chromite were reviewed for the purpose of identifying and categorizing the known deposits, and to indicate those which seem to merit further study on the basis of available information. General conclusions drawn from the study are: (1) Although aluminous chromite deposits exist, no minable deposits of refractory-grade material have been made found to date; (2) small but minable reserves of elemental sulfur, fluorspar, and magnesite are available; (3) detailed mapping, prospecting, and sampling are required to fully assess the ore reserves in known deposits, and (4) field examination of some of the other deposits described herein may call for additional exploration which may eliminate them from further consideration as minable deposits. The sulfur deposits at Koh-i-Sultan volcano in the Chagai District of Quetta Division are the only assured source of elemental sulfur in Pakistan. Indicated reserves are 85,000 tons of less than 50 percent sulfur ore of solfataric origin. The deposits are currently being mined.
Open-File Report↗
Reconnaissance of the geology and ore mineralization in part of the Chagai District, Pakistan
The Chagai District of the Quetta Division is in the northwestern part of Pakistan. Igneous activity during the Himalayan orogeny included the extrusion of horizontally layered andesites of the Cretaceous Sinjrani Volcanic Group, emplacement of monzonitic stocks of the Cretaceous Chagai intrusions, and the extrusion of flows and tuffs of the Koh-i-Sultan Volcanic Group during the Pleistocene.
Open-File Report↗