Zirconium

zirconium

baddeleyite

baghdadite

weloganite

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Formula: Zr
Zirconium is a transition metal that does not occur in the native state. When present in compounds, it exists mostly in the quadrivalent state Zr4+. Its abundance in the Earth’s crust is 165 parts per million by mass, 38 parts per million by moles. In the Solar System its abundance is very much smaller, at 40 parts per billion by mass, 0.5 parts per billion by moles. It has a melting point of 1,850oC and a boiling point of 4,400oC.
Zirconium is generally exceptionally resistant to corrosion; it is however rapidly attacked by hydrofluoric acid, even at low concentrations (ChC).

Zirconium-bearing minerals include:

Oxides
baddeleyite
belyankinite
elbrusite
mirnyite
srilankite
zirconolite

Carbonates
sabinaite
weloganite

Phosphates
gainesite
kosnarite
malhmoodite
selwynite
wycheproofite

Molybdates
kingsgateite

Nesosilicates
kimzeyite
zircon

Sorosilicates
baghdadite
bortolanite
gittinsite
hiortdahlite
lavenite
rosenbuschite
wöhlerite

Cyclosilicates
bobtraillite
calciocatapleiite
calciohilairite
catapleiite
eudialyte
ferrokentbrooksite
hilairite
lovozerite
sazykinaite-(Y)
selsurtite
sergevanite
wadeite
zolotarevite

Inosilicates
laverovite
plumbogaidonnayite
vlasovite

Phyllosilicates
dalyite
elpidite
melansonite
natromelansonite

Unclassified Silicates
terskite

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