 | | Journal (issue) | | context of gems in the Velasco Pegmatitic District, Argentina Fernando Guillermo Sardi Abstract: The Velasco...located in the Velasco range, La Rioja province, northwestern Argentina. The Velasco range is made up of several...Aimogasta Area of the Velasco range LA RIOJA PROVINCE 200 km e Velasco rang The Velasco range is located...in the central region of La Rioja province, northwestern Argentina (Figure 1). It is the largest mountainous...mountainous unit of the geological province of the Sierras Pampeanas, which is characterized by large volumes |  | Kogel, Jessica Elzea, Trivedi, Nikhil C., Barker, James M., Krukowski, Stanley T. - Eds. (2006) Industrial Minerals and Rocks (7th ed.) Society for Mining, Metallurgy, and Exploration, Inc., Littleton, CO. | Book (edition) | | . . . . . . . . . . . . . . . . . . Kyanite, Andalusite, Sillimanite, and Mullite . . . . . . . . . ...Nesosilicates (single tetrahedrons) that include andalusite, sillimanite, and kyanite; forsterite and olivine;...leading producer of chromite, manganese, diamonds, andalusite, ilme nite, r utile, a nd zir con. North America...Titanium Conc. (leucoxene) Sillimanite Kyanite Andalusite Titanium Conc. (rutile) Strontium Beryllium Minerals...Colombia) • Northern Brazilian Shield Province • Caribbean Shield Province (Costa Rica, Jamaica, Dominican |
|
