Its crystalline structure gives it strength in all directions, allowing it to provide barriers to attack from all directions simultaneously.
It has been treasured as a gemstone for thousands of years. Turquoise is an opaque mineral that occurs in beautiful hues of blue, bluish green, green, and yellowish green.
Henry 1993. Turquoise is primarily used as a decorative gemstone and has been prized by civilizations for thousands of years. Utah Salt Lake Co. There are other Angels that are partial to Turquoise. In these areas, rainfall infiltrates downward through soil and rock, dissolving small amounts of copper.
Masutomi Museum specimens Kyoto ; Yamada, S.
Otero Co. California Journal of Mines and Geology: Michailidis, C. Notice that the members of the turquoise group have very similar chemical compositions.
Turquoise Rough and Cabochons: As stated earlier, nearly all important deposits of turquoise are located near copper occurrences or in copper deposits in arid desert regions of the world.
Turquoise This page is currently not sponsored. The color of turquoise might also be altered by small amounts of iron or zinc substituting for copper in the turquoise structure.
Hicks editors , Geology of the porphyry copper deposits, southwestern North America, Univ. New Mexico held that position until the 1920s, Nevada held the position until the 1980s, and Arizona is currently the leading state. Vohidraty Vohidratsy. Turquoise and members of its group were redefined by Foord and Taggert in 1998, with turquoise reserved for an end-member composition. Mineral Up 2 5 , 8-31. Pennsylvania Cumberland Co.