Zirconolite

Zirconolite is a mineral, calcium zirconium titanate; formula CaZrTi₂O₇. Some examples of the mineral may also contain thorium, uranium, cerium, niobium and iron; the presence of thorium or uranium would make the mineral radioactive. It is black or brown in color.

References

Webmineral data
Mindat.org

Titanium minerals

Oxide minerals

Simple	Anatase Brookite Geikielite Rutile

Mixed	Aeschynite-(Y) Armalcolite Betafite Euxenite Freudenbergite Haggertyite Ilmenite Keilhauite Latrappite Perovskite Polycrase Zimbabweite Zirconolite Zirkelite

Silicate minerals

Aenigmatite
Keilhauite
Lorenzenite
Melanite
Nenadkevichite
Titanite
Zircophyllite

Other

Sabinaite (carbonate mineral)
Warwickite (borate mineral)

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