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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). It is the 9th most abundant element in the Earth's crust, by mass.
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 ultra high 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
brannerite
brookite
euxenite
fersmite
ilmenite
kaitianite
loparite-(Ce)
magnesiohögbomite-6N 12S
manganbelyankinite
perovskite
polycrase
pseudobrookite
pyrophanite
rutile
tantalaeschynite
Phosphates
paulkerrite
Arsenates
yurgensonite
Arsenites
asbecasite
cafarsite
Nesosilicates
clinohumite
titanite
schorlomite
Sorosilicates
bafertisite
bornemanite
cámaraite
chevkinite
epistolite
fresnoite
götzenite
hejtmanite
janhaugite
lamprophyllite
låvenite
lomonosovite
murmanite
perrierite
perrierite-(Ce)
perrierite-(La)
rinkite
vuonnemite
Cyclosilicates
baotite
bario-orthojoaquinite
benitoite
joquinite
labuntsovite
orthojoaquinite
taramellite
Inosilicates
aenigmatite
astrophyllite
kaersutite
kupletskite
lorenzenite
mosandrite-(Ce)
neptunite
ohmilite
rhönite
Phyllosilicates
leucosphenite
Unclassified Silicate
jingshajiangite
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