The onyx and amazonite
glistened like drops of black and turquoise paint.
specimens frequently receive this same treatment, to intensify their color a bit.
Roter, Tom Hughes), self-collected Colorado specimens (Tim Hillston), self-collected Pikes Peak minerals (Ray and Eloise Berry), Pikes Peak amazonite
and smoky quartz specimens self-collected between 1999 and 2005 (Joe, Scott and Tim Dorris), and notable Colorado species found elsewhere in the world (American Museum of Natural History).
crystals occur within clay-filled miarolitic cavities in pegmatites in the Pikes Peak Granite.
He found and dug with hand tools a fabulous pocket of amazonite
and quartz crystals.
Beautiful blue-green Colorado amazonite
has long been a favorite among collectors; fine specimens were first collected there by one of the first American mineral dealers, A.
from the Pikes Peak Batholith, Colorado.
I did not see any of the amazonite
in situ in the wall.
The "chrysoprase" may well have been amazonite
microcline from the same deposit.
In Colorado he mined amazonite
with Clarence Coil and his son every year from 1970 through 1986.
Some microcline of the amazonite
variety has been said to occur at Erongo, but the specimens most likely came from the nearby Klein Spitzkoppe, where microcline is locally abundant (Cairncross, 2004).