Photos of Mount Kineo, Maine
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Native Americans once traveled great distances to Mt. Kineo to acquire its rhyolite rock. The mountain is said to contain one of the largest formations of rhyolite in the world. This rhyolite is evidence of an igneous (volcanic) phase although the mountain formation also contain slate and sandstone demonstrating sedimentary and metaphoric history as well. The mechanical properties of the rhyolite on Mount Kineo exhibits the physical properties of flint and was used extensively by indigenous peoples to make arrowheads and implements and thus, has often been referred to as "Kineo flint" in literature; but this term misleads by implication that the rhyolite is a cryptocrystalline form of the mineral quartz derived from a sedimentary origin. The rhyolite is actually an igneous extrusive material implying a volcanic phase that created the unique properties of this highly sought after material. Being the country's largest known mass of this rock, once used by Indians to craft arrowheads, hatchets, chisels, etc., Indian implements made from the stone have been found in all parts of New England and even further south, it is evident that various tribes visited Mt. Kineo for centuries to obtain this material