I have found Amazonite now in several locations throughout the Colorado Pikes Peak Batholith. After soaking many pieces of amazonite in acid for about 3 months to try and pull some of the iron oxide staining out of the crystals I got to wondering if finds from different locations in the Pikes Peak Batholith zone were consistent. Regarding the iron oxide staining, I have had varied success with this winter’s cleaning; some the staining is embedded deep into the stones.
Amazonite is crystallized feldspar microcline with trace amounts of Lead (Pb) giving the green color, normally microcline is a pinkish/salmon color and up on Mt Antero is it white. There are a couple of examples of white capping and white striping (inclusion of orthoclase) shown here which I’m excited to have–the Amazonite in the Smithsonian museum is completely white capped/striped coming from the Two Point Claim–which is incidentally immediately between the Smoky Hawk and April Fools–the claims where I have gotten most of my Lake George stones. Amazonite and Smoky Quartz combos are highly sought and somewhat valuable. There are a couple of combos in the center of this picture from finds in the Lake George area. Although I have found many smoky quartz and some Amazonite at Devils Head, only a few combos have been unearthed. I can see why the combos are sought as they have been rare for me too.
There definitely is a different intensity of color throughout the different zones of the Pikes Peak Batholith. You can see that the darkest (most desirable) color is from the Lake George area in Teller County, although I have found some paler color in that area, I have not found any pink microcline. The few pieces I have from the Wigwam district in Jefferson County are lighter green but have fantastic crystal formations; I have also found pink there. The Devils Head variety is more bluish and definitely paler, but many of the stones I have found have signs of the white capping/zoning in the crystals; most of the microcline at Devils Head is pink for me. I have some Amazonite from the Pine Creek area which is more green than Devils Head but still paler than Lake George.
I have not yet searched out the entire list of known locations for Amazonite throughout the Pikes Peak Batholith, so someday perhaps my color observations can be more thorough. The following map is an arial view (courtesy Google Maps) of the areas I have searched and locations are color coded to match the above specimens. Would love to hear your experiences, knowledge and thoughts on the topic in the comments!