Colorado amazonite is world known and is found widely spread through the Pikes Peak batholith.
Amazonite is a variety of microcline colored blue or green by trace amounts of lead. Colorado
specimens are highly sought after by mineral collectors.
Colorado Amazonite found by ColoradoProspector. Photo by Denise.
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Amazonite, a variety of Microcline in the Feldspar group.
Mohs hardness: 6-6.5
Common uses today - Semi precious cabochons for jewelry and quality specimens from Colorado are highly sought after by collectors world wide.
- pictures in the CP forums.
From Wikipedia -
"Amazonite is a mineral of limited occurrence. Formerly it was obtained almost exclusively from the area of Miass in the
Ilmen mountains, 50 miles southwest of Chelyabinsk, 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.
Crystal Peak, Teller County, Colorado is a well-known locality for crystals of amazonite.
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 results from small quantities of lead and water in the feldspar. (Hoffmeister and Rossman, 1985)"
Check out the Mindat.org database for detailed information about