Titanium

minerals

paulkerrite

coesite

kyanite

Formula: Ti
Native element
Specific gravity: 4.503
Hardness: 4
Streak: Greyish black
Colour: Silver-grey
Melting point: 1,668oC
Boiling point: 3,287oC
Abundance: In the Earth’s crust, 0.56% by mass, 0.25% by moles; in the Solar System, 4 parts per million by mass, 100 parts per billion by moles (ChC) Environments

Plutonic igneous environments
Metamorphic environments
Fumeroles

Two forms of native titanium have been found; the first, found in granite, crystallises in the hexagonal system, and the second occurs as minute inclusions in garnet from an ultrahigh pressure metamorphic complex, and crystallises in the tetragonal system (Mindat); also as microscopic inclusions in coesite eclogites (Webmin).

Localities

At the type locality, Orebody 31, Luobusha Mine, Qusum county, Shannan Prefecture, Tibet, China, titanium has been found in chromitite associated with kyanite and coesite (Mindat).

At the Great Fissure eruption, Tolbachik volcano, Kamchatka Krai, Russia, hexagonal titanium has been described from fumaroles (Mindat).

Titanium has been recovered from heavy-mineral separates prepared from granite taken from the margin of the Bezymyannyy pluton, eastern Yakutia, USSR. The separates also contain native tin, lead, copper, iron, zinc, nickel, gold, aluminum and tin-antimony and copper-zinc compounds (AM 76.1435).

Titanium-bearing minerals include:

Borates
warwickite

Oxides
aeschynite
anatase
brookite
euxenite
fersmite
ilmenite
loparite
perovskite
polycrase
pseudobrookite
pyrophanite
rutile
tantalaeschynite

Phosphates
paulkerrite

Nesosilicates
titanite
schorlomite

Sorosilicates
bafertisite
chevkinite
epistolite
fresnoite
hejtmanite
janhaugite
lamprophyllite
lomonosovite
murmanite
rinkite
vuonnemite

Cyclosilicates
baotite
bario-orthojoaquinite
benitoite
joquinite
labuntsovite
orthojoaquinite
taramellite

Inosilicates
aenigmatite
astrophyllite
kaersutite
kupletskite
lorenzenite
mosandrite
neptunite
ohmilite

Phyllosilicates
leucosphenite

Unclassified Silicate
jingshajiangite

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