Chlorite group

chloriteclinochlorecookeitenimitechloritizationchloritesGonyeriteSudoiteBaileychlorechloritic
The chlorites are a group of phyllosilicate minerals.wikipedia
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Brucite

magnesiummagnesium silicate
This (Mg(2+), Fe(3+))(OH)6 unit is more commonly referred to as the brucite-like layer, due to its closer resemblance to the mineral brucite (Mg(OH)2).
It is a common alteration product of periclase in marble; a low-temperature hydrothermal vein mineral in metamorphosed limestones and chlorite schists; and formed during serpentinization of dunites.

Mineral

mineralsmineral depositsaccessory mineral
The chlorites are a group of phyllosilicate minerals.
Important examples include the mica, chlorite, and the kaolinite-serpentine groups.

Greenschist

greenstonegreenschist faciesgreenstones
It is the diagnostic species of the zeolite facies and of lower greenschist facies.
Greenschists commonly have an abundance of green minerals such as chlorite, serpentine, and epidote, and platy minerals such as muscovite and platy serpentine.

Schist

schistsmica schistschistose
It occurs in the quartz, albite, sericite, chlorite, garnet assemblage of pelitic schist.
These lamellar (flat, planar) minerals include micas, chlorite, talc, hornblende, graphite, and others.

Metasomatism

hydrothermal alterationmetasomaticmetasomatized
In this environment chlorite may be a retrograde metamorphic alteration mineral of existing ferromagnesian minerals, or it may be present as a metasomatism product via addition of Fe, Mg, or other compounds into the rock mass. Chlorite is a common mineral associated with hydrothermal ore deposits and commonly occurs with epidote, sericite, adularia and sulfide minerals.

Metamorphic rock

metamorphicmetamorphosedmetamorphic rocks
Chlorite is also a common metamorphic mineral, usually indicative of low-grade metamorphism.
This causes the platy or elongated crystals of minerals, such as mica and chlorite, to become rotated such that their long axes are perpendicular to the orientation of shortening.

Seraphinite

A massive compact variety of clinochlore used as a decorative carving stone is referred to by the trade name seraphinite.
Seraphinite is a trade name for a particular form of clinochlore, a member of the chlorite group.

Biotite

biotite micabiotite gneissbiotite orbicules
Chlorite is commonly found in igneous rocks as an alteration product of mafic minerals such as pyroxene, amphibole, and biotite.
Biotite may be found in association with its common alteration product chlorite.

Thuringite

Thuringite is a variety of the chlorite mineral chamosite, a hydrous iron and aluminium silicate mineral.

Silicate minerals

silicate mineralphyllosilicatephyllosilicates
The chlorites are a group of phyllosilicate minerals.

Endmember

end memberendmembersend-member
Chlorites can be described by the following four endmembers based on their chemistry via substitution of the following four elements in the silicate lattice; Mg, Fe, Ni, and Mn.

X-ray crystallography

X-ray diffractionprotein crystallographyX-ray
The great range in composition results in considerable variation in physical, optical, and X-ray properties.

Greek language

GreekAncient GreekModern Greek
The name chlorite is from the Greek chloros, meaning "green", in reference to its color.

Chlorine

Clchlorine gaschlorinated
They do not contain the element chlorine, also named from the same Greek root.

Talc

talcum powdertalcummagnesium silicate
Chlorites have a 2:1 sandwich structure (2:1 sandwich layer = tetrahedral-octahedral-tetrahedral = t-o-t...), this is often referred to as a talc layer.

Ion

cationanionions
Unlike other 2:1 clay minerals, a chlorite's interlayer space (the space between each 2:1 sandwich filled by a cation) is composed of (Mg(2+), Fe(3+))(OH)6.

Igneous rock

igneousigneous rocksdecompression melting
Chlorite is commonly found in igneous rocks as an alteration product of mafic minerals such as pyroxene, amphibole, and biotite.

Mafic

basicferromagnesianbasaltic lava
Chlorite is commonly found in igneous rocks as an alteration product of mafic minerals such as pyroxene, amphibole, and biotite.

Pyroxene

clinopyroxeneorthopyroxenepyroxenes
Chlorite is commonly found in igneous rocks as an alteration product of mafic minerals such as pyroxene, amphibole, and biotite.

Amphibole

amphibolesamphibole groupamphibolic
Chlorite is commonly found in igneous rocks as an alteration product of mafic minerals such as pyroxene, amphibole, and biotite.

Hydrothermal circulation

hydrothermalepithermalhydrothermal fluid
In this environment chlorite may be a retrograde metamorphic alteration mineral of existing ferromagnesian minerals, or it may be present as a metasomatism product via addition of Fe, Mg, or other compounds into the rock mass. Chlorite is a common mineral associated with hydrothermal ore deposits and commonly occurs with epidote, sericite, adularia and sulfide minerals. For this reason chlorite minerals are ubiquitous minerals within low and medium temperature metamorphic rocks, some igneous rocks, hydrothermal rocks and deeply buried sediments.

Ore

oresore depositmineral deposit
In this environment chlorite may be a retrograde metamorphic alteration mineral of existing ferromagnesian minerals, or it may be present as a metasomatism product via addition of Fe, Mg, or other compounds into the rock mass. Chlorite is a common mineral associated with hydrothermal ore deposits and commonly occurs with epidote, sericite, adularia and sulfide minerals.

Epidote

epidotisedHancockiteepidotized
In this environment chlorite may be a retrograde metamorphic alteration mineral of existing ferromagnesian minerals, or it may be present as a metasomatism product via addition of Fe, Mg, or other compounds into the rock mass. Chlorite is a common mineral associated with hydrothermal ore deposits and commonly occurs with epidote, sericite, adularia and sulfide minerals.

Sericite

sericitizedsericitisationvar: Sericite
It occurs in the quartz, albite, sericite, chlorite, garnet assemblage of pelitic schist. In this environment chlorite may be a retrograde metamorphic alteration mineral of existing ferromagnesian minerals, or it may be present as a metasomatism product via addition of Fe, Mg, or other compounds into the rock mass. Chlorite is a common mineral associated with hydrothermal ore deposits and commonly occurs with epidote, sericite, adularia and sulfide minerals.

Orthoclase

K-feldsparadulariaorthoclase feldspar
In this environment chlorite may be a retrograde metamorphic alteration mineral of existing ferromagnesian minerals, or it may be present as a metasomatism product via addition of Fe, Mg, or other compounds into the rock mass. Chlorite is a common mineral associated with hydrothermal ore deposits and commonly occurs with epidote, sericite, adularia and sulfide minerals.