Olivine has been found all over the earth -- Egypt, Myanmar, South Africa, Russia, Pakistan, Norway, Sweden, France, Brazil, Germany, Mexico, Ethiopia, Australia, China and the US. As early as 1500 BC Egyptian pharaohsmined Olivine on Zabargad Island in the Red Sea. Olivine can be found in the green beaches in Hawaii as well as in meteorites, on Mars and on the Moon.
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Olivine is mined in various countries around the world, including the United States, Norway, Finland, and India. Some of the major olivine mining locations include Hawaii (forsterite-rich olivine), Norway (fayalite-rich olivine), and Finland. These regions have significant deposits of olivine due to their geological history and processes.
Olivine does not contain Gabbro. Gabbro can contain olivine. Usually no more than a few percent.
Olivine belongs to the silicate mineral group.
Peridotite is made only of olivine and pyroxene
Olivine is found in space rocks so it is certainly present in all the rock planets.
Olivine does not have cleavage. It exhibits a granular or irregular fracture pattern instead of cleavage planes.