Rhyolite - is a fine grained igneous, volcanic (extrusive) rock, of felsic (silica-rich) composition It may have any texture from glassy to aphanitic to porphyritic. The mineral assemblage is usually quartz, alkali feldspar and plagioclase. Biotite and hornblende are common accessory minerals. Rhyolite can be considered as the extrusive equivalent to the plutonic granite rock, and consequently, outcrops of rhyolite may bear a resemblance to granite.Rhyolite colors are brown, gray and often features streaks or mottles.
During the second millennium BC, rhyolite was quarried extensively in what is now eastern Pennsylvania in the United States. Among the leading quarries was the Carbaugh Run Rhyolite Quarry Site in Adams County, where as many as fifty small quarry pits are known.The name rhyolite has been introduced into science by the German traveler and geologist Ferdinand von Richthofen after his explorations in the Rocky Mountains in the 1860s.
Metaphysical - Rhyolite is said to be beneficial in helping one reach goals, gaining structure, focus and success. The stone has been used for meditation purposes to assist one in understanding the here and now and the purpose of being in the present time frame of life. Rhyolite is accredited with assisting the metal state of mind and improving the metal thought processes.
Solid Rhyolite Sphere measures 40mm in diameter.
White Witch Wares makes no claims to the properties of this item it is offered purely as a decorative item for your entertainment only.
