Arizona has such a unique and fantastic geologic history. A remnant of that history are the rocks, gems and mineral deposits all over the state. Many people have no idea of the richness that lies beneath their feet.   To bring that geologic history and the story of the earth in Arizona to life, we dedicate the Pinal Geology and Mineral Museum. Created and maintained by the Pinal Gem and Mineral Society under the guidance of geologist Ray Grant, the museum is telling the story of the earth in Arizona and displaying examples of its mineral beauty.