Crossite is an inosilicate double chain sodic
amphibole
Amphibole ( ) is a group of inosilicate minerals, forming prism or needlelike crystals, composed of double chain tetrahedra, linked at the vertices and generally containing ions of iron and/or magnesium in their structures. Its IMA symbol is ...
and is a rare
silicate mineral
Silicate minerals are rock-forming minerals made up of silicate groups. They are the largest and most important class of minerals and make up approximately 90 percent of Earth's crust.
In mineralogy, the crystalline forms of silica (silicon dio ...
belonging to the
riebeckite
Riebeckite is a sodium-rich member of the amphibole group of silicate minerals, chemical formula Na2(Fe2+3Fe3+2)Si8O22(OH)2. It forms a solid solution series with magnesioriebeckite. It crystallizes in the monoclinic system, usually as long ...
group. It is considered an intermediate between the amphiboles
glaucophane
Glaucophane is a mineral and a mineral group belonging to the sodic amphibole supergroup of the double chain inosilicates, with the chemical formula Na2(Mg3Al2)Si8O22(OH)2.
Glaucophane crystallizes in the monoclinic system.
Name
Glaucophane is ...
and
magnesioriebeckite, which form a series.
RIEBECKITE (Sodium Iron Magnesium Silicate Hydroxide)
/ref> IMA
IMA or Ima may refer to:
Education
* Indian Military Academy, Dehradun
* Instituto Miguel Ángel, a school in Mexico City
Galleries and museums
* Indianapolis Museum of Art, Indiana, US
* Institut du Monde Arabe, Paris, France
* Islamic Mus ...
status: discredited 1997.
Crossite is named after Charles Whitman Cross, an American USGS
The United States Geological Survey (USGS), founded as the Geological Survey, is an government agency, agency of the United States Department of the Interior, U.S. Department of the Interior whose work spans the disciplines of biology, geograp ...
petrologist.
References
External links
Crossite on MindatCrossite on Webmineral
Sodium minerals
Iron(II,III) minerals
Magnesium minerals
Amphibole group
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