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Excerpt: Chili, where it is, found in great quantities upon the Campana, a high mountain in the province of Quil- lota, and is known by the same name. This pyrites is of a cubical figure, and contains a mixture of gold and copper mineralized with sulphur. It emits but -a very few sparks with the steel, a circumstance which distinguishes it from all the other species. Sect. XI. Semi-metals. -- All the known kinds of semi-metals are met with in Chili, and are found either in mines by themselves, or combined with metallic ores, and generally in a state of mineralization. But the working them is neglected or prohibited, and antimony is the only one sought for, as it is necessary for refining the precious metals. This mineral is discovered under various forms, as, the red antimony combined with arsenic and sulphur, the striated a, nd the compact, all of which are found in mines of gold, silver, iron and lead. One mine alone has furnished crystallized antimony. The digging of quicksilver is rigorously prohibited in consequence of its being a royal monopoly. It is found in a metallic form, or mineralized with sulphur under that of cinnabar. The two richest mines are in the provinces of Coquimbo and Copia- pa, from whence vast quantities might be obtained if it were permitted to work them, the greater part of which would probably be sold in the country itself, as much is required for the amalgamation of. t...