 | " A large, perfectly-formed, terminated amazonite crystal from Colorado, with wonderful deep turquoise color. This impressive crystal is complete all around, with very sharp faces. Microcline is a polymorph of other minerals that share the same chemistry but have different crystal structures. If positive identification can not be made by field methods then the specimen may be refered to as a potassium feldspar or K-spar. The other k-spar minerals are sanidine, orthoclase and anorthoclase. The differences between these minerals are minor in hand samples but microcline tends to be deeper colored, is usually striated on cleavage planes and is the only one that can be, but is not always, a deep green (amazonite)." Location: Pikes Peak, Park County, Colorado
Size: 9.2 x 8.8 x 4.8 cm.
Weight: 1.5 lbs.
Quantity Available: 1 Price:
$225.00 |