The California State Mining and Mineral Museum is a museum in the state park system of California, United States, home to the state's mineral collection, with minerals and gems from all over the world. The museum also interprets the state's mineral resources and mining heritage. It is located in Mariposa, a city in central California, on the Mariposa County fairgrounds. The museum houses a collection that was created in 1880, with the establishment of the California State Mining Bureau. Henry G. Hanks was the first California State Mineralogist and was tasked with managing the collection. The collection was housed in the Ferry Building in San Francisco until 1983. The collection opened in its current home at the Mariposa County Fairgrounds in 1986. The collection was transferred from the California Department of Conservation to the California Department of Parks & Recreation in 1999. At present, it is the only California State Park without any associated land. Today, the international collection holds over 13,000 minerals, rocks, gems, fossils, and historic artifacts.