Zirconolite

Zirconolite
Black crystal aggregates of the rare zirconium mineral zirconolite.
General
CategoryOxide minerals
FormulaCaZrTi2O7
IMA symbolZrc[1]
Strunz classification4.DH.30
Crystal system2M polytype: monoclinic
3O polytype: orthorhombic
3T polytype: trigonal
Crystal class2M polytype: prismatic (2/m)
3O polytype: dipyramidal (mmm (2/m 2/m 2/m))
3T polytype: trapezohedral (3 2)
Identification
ColorBlack to brown, red
LusterResinous, sub-Metallic
StreakDark brown, brownish yellow
DiaphaneityTranslucent, opaque
References[2]

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.[3]

References

  1. ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
  2. ^ Mindat
  3. ^ Webmineral data
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