(10%); and a major producer of boron. Argentina was not a globally significant producer of mineral fuels in 2017, although it is estimated to have the second largest shale gas reserves in the world (eY, 2017, p. 17; Crangle, 2019; Jaskula, 2019). Minerals in the National Economy in 2017, the value added to the nominal gDP by the mining and quarrying sector (including .
Microcline is industrially important in the manufacture of glass and shaped crystals, especially those of Amazonite are cherished by mineral collectors. Amazonite is also used as a gemstone, and is polished into beads, cabochon s, and ornamental figures. Also see the gemstone section on Amazonite. NOTEWORTHY LOCALITIES