Arizona Mushroom Picture Jasper is a silica rich orbicular rhyolite. Mushroom Jasper has base colors of red, reddish orange, greens and greenish browns. The orbs that make up the mushroom patterns are comprised of grays, flesh tones, tans and browns. Mushroom Jasper can be cut in different directions to reveal mushroom pictures, orbs and other interesting patterns or scenes. There is a similar rhyolite nodule that comes from the Oregon opal mines near Hepner. This material is mostly browns and tans. It is called turkey feather. At times the patterns in the mushroom jasper also look like feathers.