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There are quarries of the stone of chrispa, and even the magnet in Alamas, Hermosillo, in Sierras of the frontier, and in the causada of Barbitas, ten leagues distant from Hermosillo, near the route of La Cieneguilla.

In fact, many metals of universal estimation, such as gold, silver, mercury, copper, and iron, in a pure state, in grains, in masses, or in dust, as well as mixed with other metals, superficially or in veins, are found in the extensive territory of Sonora; lead, or combinations of lead, for aiding in extracting metals by fire, and for the construction of munitions of war, amianthus or incombustible crystal, divers ores of copperas, exquisite marble, alabaster, and jasper of various colors, as well as quarries of stone of chrispa and magnetic stones, muriate and carbonate of soda, saltpetre or nitrate of potassa, are, in enumeration, the mineral productions which are found in abundance in the territory of the state of Sonora, which comprehends the region from the river of Fort Monte Clarasal at the south to the Gila at the north, and from the Sierra Madre at the east to the Colorado at the northwest.