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This list of mines in California is subsidiary to the list of mines article and lists working, defunct and future mines in the U.S. state of California. It is organized by the primary mineral output. For practical purposes stone, marble and other quarries may be included in this list.
In 1986, California named benitoite as its state gemstone, a form of the mineral barium titanium silicate that is unique to the Golden State and only found in gem quality in San Benito County. [ 80 ] ^ Colorado is the only state whose geological symbols reflect the national flag's colors: red (rhodochrosite), white (yule marble), and blue ...
Searles Valley Minerals Inc. is a raw materials mining and production company with corporate offices in Overland Park, Kansas. It is owned by the Indian company Nirma . [ 1 ] [ 2 ] It has major operations in the Searles Valley centered in Trona, California where it is the town's largest employer.
Belite is the mineral in Portland cement responsible for development of "late" strength. The other silicate, alite contributes "early" strength, due to its higher reactivity. Belite reacts with water (roughly) to form calcium silicate hydrates (C-S-H) and portlandite (Ca(OH) 2) according to the reaction:
Staurolite is a reddish brown to black, mostly opaque, nesosilicate mineral with a white streak. It crystallizes in the monoclinic crystal system, has a Mohs hardness of 7 to 7.5 and the chemical formula: Fe 2+ 2 Al 9 O 6 (SiO 4) 4 (O,OH) 2. Magnesium, zinc and manganese substitute in the iron site and trivalent iron can substitute for ...
Recreational opportunities include hunting, camping, hobby gem/mineral collecting, mountain biking, horseback riding, hiking/backpacking, and sightseeing. Hobby gem and mineral collectors are drawn to the Clear Creek area, one of the most highly mineralized areas in California, by the presence of over 150 semi-precious minerals and gemstones.
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Franklin Furnace ca. 1900 Fluorescent minerals of the Franklin mineral district: franklinite (black), willemite (green), and calcite (red). USGS. Franklin Furnace, also known as the Franklin Mine, is a famous mineral location for rare zinc, [1] iron, and manganese minerals in old mines in Franklin, Sussex County, New Jersey, United States.