Microcline feldspar variety Amazonite with Smoky Quartz from Two Point Claim, Teller County, Colorado

Amazonite (sometimes called "Amazon stone") is a green variety of microcline feldspar. Image File history File linksMetadata Download high-resolution version (3008x2000, 3541 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Amazonite Metadata This file contains additional information, probably added from the digital camera or scanner used to create... Image File history File linksMetadata Download high-resolution version (3008x2000, 3541 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Amazonite Metadata This file contains additional information, probably added from the digital camera or scanner used to create... Quartz is one of the most common minerals in the Earths continental crust. ... Official language(s) English Capital Denver Largest city Denver Area  Ranked 8th  - Total 104,185 sq mi (269,837 km²)  - Width 280 miles (451 km)  - Length 380 miles (612 km)  - % water 0. ... Microcline (KAlSi3O8) is an important igneous rock forming tectosilicate mineral. ... Lunar Ferroan Anorthosite #60025 (Plagioclase Feldspar). ...

The name is taken from that of the Amazon River, from which certain green stones were formerly obtained, but it is doubtful whether green feldspar occurs in the Amazon area. A satellite image of the mouth of the Amazon River, looking south The Amazon River or River Amazon (Spanish: ; Portuguese: ) of South America is the most voluminous river on earth, having a greater total flow than the next six largest rivers combined. ... Lunar Ferroan Anorthosite #60025 (Plagioclase Feldspar). ...

Amazonite is a mineral of limited occurrence. Formerly it was obtained almost exclusively from the area of Miyask in the Ilmen mountains, 50 miles southwest of Chehabinsk, Russia, where it occurs in granitic rocks. More recently, high-quality crystals have been obtained from Pike's Peak, Colorado, where it is found associated with smoky quartz, orthoclase, and albite in a coarse granite or pegmatite. Some other localities in the United States yield amazonite, and it is also found in pegmatite in Madagascar. Pikes Peak (formerly Pikes Peak, see below) is a mountain in the Front Range of the Rocky Mountains, 10 miles (16 km) west of Colorado Springs, Colorado, in El Paso County. ... Official language(s) English Capital Denver Largest city Denver Area  Ranked 8th  - Total 104,185 sq mi (269,837 km²)  - Width 280 miles (451 km)  - Length 380 miles (612 km)  - % water 0. ... Quartz is one of the most common minerals in the Earths continental crust. ... Orthoclase (KAlSi3O8) is an important igneous rock forming tectosilicate mineral. ... Albite is an alkali feldspar mineral. ... Quarrying granite for the Mormon Temple, Utah Territory. ... This article or section does not cite its references or sources. ... This article or section does not cite its references or sources. ...

Because of its bright green colour when polished, amazonite is sometimes cut and used as a gemstone. Green is a color with many different shades, all within a wavelength of roughly 520–570 nm. ... A selection of gemstone pebbles made by tumbling rough rock with abrasive grit, in a rotating drum. ...

For many years, the source of amazonite's color was a mystery. Naturally, many people assumed the color was due to copper because copper compounds often have blue and green colors. More recent studies suggest that the blue-green color is due to small quantities of lead and water in the feldspar. (Hoffmeister and Rossman, 1985) For other uses, see Copper (disambiguation). ... General Name, Symbol, Number lead, Pb, 82 Chemical series poor metals Group, Period, Block 14, 6, p Appearance bluish white Atomic mass 207. ...

See also: List of minerals Gem animals. ...

References

• Hoffmeister and Rossman (1985). " ". Am. Min. 70: 794-804.