Climate factors appear to play an important role as turquoise is typically found in arid regions, filling or encrusting cavities and fractures in typically highly altered volcanic rocks, often with associated limonite and other iron oxides. In the Southwestern United States turquoise is almost invariably associated with the ...
Detailed description, properties, locality information guide about the blue mineral turquoise. ... Turquoise is an antique ornamental stone, highly regarded for its unique and striking namesake color. Valued in both the ancient Persian and .... Recommended Books on Rocks, Minerals, and Gemstones · Our Recommended ...
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Turquoise can also replace the rock in contact with these waters. If the replacement is complete, a solid mass of turquoise will be formed. When the replacement is less complete, the host rock will appear as a "matrix" within the turquoise. The matrix can form a "spider web," "patchy" design, or other pattern within the stone.
Jan 18, 2016 ... It is the left over remains from the host rock in which the Turquoise grew. The webbing can be black, brown, yellow or a host of other colors. Over long periods of time this matrix erodes away. When this happens the matrix and the Turquoise are at different heights and this creates a type of over growth.
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Jan 29, 2015 ... The latest installment in the Rocks On series examines current supply and demand for turquoise and displays 16 pieces of jewelry that highlight the stone's hues.