It can be found in … California was the first state to designate an official state rock, Serpentine in 1965. The appropriate generalized formula is thus It contains the state's principal deposits of chromite, magnesite, and cinnabar. It contains the state's principal deposits of chromite, magnesite, and cinnabar. The term “serpentinite” is the proper term for the rock that is mostly made up of one or more of the serpentine group minerals. Serpentine rock is primarily composed of one or more of the three magnesium silicate minerals, "lizardite," "chrysotile," and "antigorite." Having serpentine as California's State Rock calls attention to these issues in many places; and provides a "teaching moment." Serpentine is California’s state rock. Serpentine is closely associated with gold deposits in the foothills, with the California Gold Rush, and California’s history. Serpentine is a very common mineral, and is found in abundance worldwide. It is serpentine rock. Serpentine occurs in central and northern California -- in the Coast Ranges, the Klamath Mountains, and in the Sierra Nevada foothills. Serpentine is a Chrysotile often occurs as fibrous veinlets in serpentine. The recognition and study of serpentinite in California contributed to the understanding of modern plate tectonic theory. It is the state rock of California, USA and the California Legislature specified that serpentine was "the official State Rock and lithologic emblem." Learn why we shouldn't in this series of posts on a beautiful rock . Serpentine soil habitats are often home to many native species … Here in California, however, we have North America’s largest exposures and we’ve made it our official state rock. Endemics make up about 10% of the CFP vascular plant endemics yet serpentine soils in California comprise < 1% of the state's surface. What’s important is that the proposal deserves a fair and open debate. Species-rich archipelagos of communities comprise 1.5% of the state's land area. position at the convergence of two tectonic plates and the stresses resulting from that meeting. It is the state rock of California, USA and the California Legislature specified that serpentine was "the official State Rock and lithologic emblem." For one, asbestos is not a mineral - neither is serpentine (thus its place as "state rock"). Serpentine is formed when rocks deep in the earth's interior come into contact with water, heat, and pressure. The state rock of California is the serpentine, and it was officially designated in 1965. Serpentine is a shiny green and blue rock found throughout California. The bill met with resistance from some California geologists, who noted that the chrysotile present is not hazardous unless it is mobilized in the air as dust. It’s almost a perfect choice for our state rock except that it is not found in Southern California. – is a rare rock type whose source is the mantle of the earth, dozens of miles below the surface. This assertion is, to say the least, not quite accurate. Serpentine is the state rock of California and takes its name from its mottled pattern, which is sometimes reminiscent of snakeskin. Serpentinites and Serpentine Formation. Photo of serpentine rock © Michael Baird, shot near Cayucos, CA: The Franciscan Mélange at Estero Bluffs (used by permission). Serpentine is a shiny green and blue rock found throughout California. Serpentine is California’s state rock. The asbestos in serpentine is mostly the less-harmful form, chrysotile, rather than the more dangerous form - amphibole. However, the connection between the mining process and harmful effects were discovered thereafter and asbestos mining was banned in California in the 1970s. Serpentine is an interesting and valuable rock that has an important role in education about California history, geology, biology, and environmental science. Chrysotile asbestos is sometimes found in … See also Edit. Why? While we are all entitled to our own opinions, we are not entitled to our own facts.