also be used as a source of magnesium in conjunction with electrolytic cells for CO2 scrubbing. Cultural references It is the state rock of California, USA and the California Legislature specified that serpentine was "the official State Rock and lithologic emblem." In 2010, a bill was introduced which would have removed serpentine's special status as state rock due to it potentially containing chrysotile asbestos. 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. See also References External links The Lost City hydrothermal field, Mid-Atlantic ridge: serpentinization, the driving force of the system. H2-rich fluids from serpentinization: Geochemical and biotic implications: Proceedings of the National Academy of Sciences. Serpentine group Metamorphic petrology Metamorphic rocks