Pecoraite from Eden, Vermont
|Crystal system||Monoclinic |
Unknown space group
|Color||Green, blue-green yellow-green|
|Mohs scale hardness||2.5-3|
Pecoraite is a nickel silicate mineral and a member of the serpentine group. It was named after geologist William Thomas Pecora. It is monoclinic and has a chemical composition of Ni3(Si2O5)(OH)4. It is associated with the weathering-and-or oxidation of meteorites or nickel sulfide minerals such as millerite. It is also found in altered ultramafic rocks. Pecoriate is typically a green, lime green, or bluegreen mineral with a waxy, or earthy luster and a mohs hardness of 2.5. Common textural habits associated with Pecoraite are curved plates, spirals and tubes. It can also be granular and massive.
|This article about a specific silicate mineral is a stub. You can help Wikipedia by expanding it.|