Douglas Sherman
Staff
Because I will be on the road on Monday, I am posting this thread today. The first two images are of the opposite sides of a large quartz crystal with pink tourmaline crystals from the famous Pala District in California.
The next two are different forms of K-feldspar or microcline. The pinkish one is called orthoclase and the bluish green one is called amazonite. The green is thought to be caused by trace amounts of lead.
The next two are different forms of K-feldspar or microcline. The pinkish one is called orthoclase and the bluish green one is called amazonite. The green is thought to be caused by trace amounts of lead.