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Vesuvianite

 
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Vesuvianite
 
 
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Vesuvianite, also known as idocrase is a green, brown, yellow, or blue silicate mineral
Silicate minerals

The silicate minerals make up the largest and most important class of rock-forming minerals, comprising approximately 90 percent of the crust of the Earth....
. Vesuvianite occurs as tetragonal
Tetragonal crystal system

In crystallography, the tetragonal crystal system is one of the 7 lattice point groups. Tetragonal crystal lattices result from stretching a cubic lattice along one of its lattice vectors, so that the Cube becomes a rectangular Prism with a square base and height ....
 crystal
Crystal

A crystal or crystalline solid is a solid material whose constituent atoms, molecules, or ions are arranged in an orderly repeating pattern extending in all three spatial dimensions....
s in skarn
Skarn

Skarn is a metamorphic rock that is usually variably colored green or red, occasionally grey, black, brown or white.It usually forms by chemical metasomatism of rocks during metamorphism and in the contact zone of magmatic intrusions like granites with carbonate-rich rock s such as limestone or dolostone....
 deposits and limestone
Limestone

File:Limestone Formation In Waitomo.jpgLimestone is a sedimentary rock composed largely of the mineral calcite . The deposition of limestone strata is often a by-product and indicator of biological activity in the geology record....
s that have been subjected to contact metamorphism
Metamorphism

Metamorphism is the solid-state Crystallization of pre-existing Rock due to changes in physical and chemical conditions, primarily heat, pressure, and the introduction of chemically active fluids....
. It was first discovered within included blocks or adjacent to lava
Lava

Lava is molten Rock expelled by a volcano during an eruption. When first expelled from a volcanic vent, it is a liquid at temperatures from 700 ?C to 1,200 ?C ....
s on Mount Vesuvius
Mount Vesuvius

Mount Vesuvius is an stratovolcano east of Naples Italy. It is the only volcano on the European mainland to have erupted within the last hundred years, although it is not currently eruption....
, hence its name.

A bluish variety known as cyprine has been reported from Franklin, New Jersey
Franklin, New Jersey

Franklin is a Borough in Sussex County, New Jersey, New Jersey, United States. As of the United States 2000 Census, the borough population was 5,160....
 and other locations; the blue is due to impurities of copper. Californite is a name sometimes used for jade
Jade

Jade is an ornamental stone.The term jade is applied to two different metamorphic rocks that are made up of different silicate minerals:...
-like vesuvianite, also known as California-, American- or Vesuvianite-jade.






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Vesuvianite, also known as idocrase is a green, brown, yellow, or blue silicate mineral
Silicate minerals

The silicate minerals make up the largest and most important class of rock-forming minerals, comprising approximately 90 percent of the crust of the Earth....
. Vesuvianite occurs as tetragonal
Tetragonal crystal system

In crystallography, the tetragonal crystal system is one of the 7 lattice point groups. Tetragonal crystal lattices result from stretching a cubic lattice along one of its lattice vectors, so that the Cube becomes a rectangular Prism with a square base and height ....
 crystal
Crystal

A crystal or crystalline solid is a solid material whose constituent atoms, molecules, or ions are arranged in an orderly repeating pattern extending in all three spatial dimensions....
s in skarn
Skarn

Skarn is a metamorphic rock that is usually variably colored green or red, occasionally grey, black, brown or white.It usually forms by chemical metasomatism of rocks during metamorphism and in the contact zone of magmatic intrusions like granites with carbonate-rich rock s such as limestone or dolostone....
 deposits and limestone
Limestone

File:Limestone Formation In Waitomo.jpgLimestone is a sedimentary rock composed largely of the mineral calcite . The deposition of limestone strata is often a by-product and indicator of biological activity in the geology record....
s that have been subjected to contact metamorphism
Metamorphism

Metamorphism is the solid-state Crystallization of pre-existing Rock due to changes in physical and chemical conditions, primarily heat, pressure, and the introduction of chemically active fluids....
. It was first discovered within included blocks or adjacent to lava
Lava

Lava is molten Rock expelled by a volcano during an eruption. When first expelled from a volcanic vent, it is a liquid at temperatures from 700 ?C to 1,200 ?C ....
s on Mount Vesuvius
Mount Vesuvius

Mount Vesuvius is an stratovolcano east of Naples Italy. It is the only volcano on the European mainland to have erupted within the last hundred years, although it is not currently eruption....
, hence its name.

A bluish variety known as cyprine has been reported from Franklin, New Jersey
Franklin, New Jersey

Franklin is a Borough in Sussex County, New Jersey, New Jersey, United States. As of the United States 2000 Census, the borough population was 5,160....
 and other locations; the blue is due to impurities of copper. Californite is a name sometimes used for jade
Jade

Jade is an ornamental stone.The term jade is applied to two different metamorphic rocks that are made up of different silicate minerals:...
-like vesuvianite, also known as California-, American- or Vesuvianite-jade. Xanthite is a manganese
Manganese

Manganese is a chemical element, designated by the symbol Mn. It has the atomic number 25. It is found as a Oxidation state in nature , and in many minerals....
 rich variety. Wiluite
Wiluite

Wiluite is a dark green, brownish, or black blocky silicate mineral with formula: calcium19135silicon18oxygen6810....
 is an optically positive variety from Wilui, Siberia
Siberia

Siberia , is the name given to the vast region constituting almost all of North Asia and for the most part currently serving as the massive central and eastern portion of the Russian Federation, having served in the same capacity previously for the Soviet Union from its beginning, and the Russian Empire beginning in the 16th century....
. Idocrase is an older synonym sometimes used for gemstone
Gemstone

A gemstone or gem, also called a precious or semi-precious stone, is a piece of attractive mineral, which — when cut and polished — is used to make jewellery or other adornments....
-quality vesuvianite.