TY - JOUR
T1 - Mineral nomenclature
T2 - zirconolite
AU - Bayliss, Peter
AU - Mazzi, Fiorenzo
AU - Munno, Rosalba
AU - White, Tim J.
PY - 1989
Y1 - 1989
N2 - The nomenclature of CaZrTi2O7 minerals has become very confused, such that zirconolite, zirkelite and polymignite each have acquired multiple meanings and represent five different crystal structures. To resolve these inconsistencies, the IMA approved resolutions as follows. Zirconolite is the non-crystalline (metamict) mineral or mineral with undertermined polytypoid of CaZrTi2O7. Zirconolite-3O is the three-layered orthorhombic polytypoid of CaZrTi2O7. Zirconolite-3T is the three-layered trigonal polytypoid of CaZrTi2O7. Zirconolite-2M is the two-layered monoclinic polytypoid of CaZrTi2O7. Polymignite (metamict) is discarded as equivalent to zirconolite. Zirkelite is the cubic mineral with formula (Ti, Ca, Zr)O2-x.
AB - The nomenclature of CaZrTi2O7 minerals has become very confused, such that zirconolite, zirkelite and polymignite each have acquired multiple meanings and represent five different crystal structures. To resolve these inconsistencies, the IMA approved resolutions as follows. Zirconolite is the non-crystalline (metamict) mineral or mineral with undertermined polytypoid of CaZrTi2O7. Zirconolite-3O is the three-layered orthorhombic polytypoid of CaZrTi2O7. Zirconolite-3T is the three-layered trigonal polytypoid of CaZrTi2O7. Zirconolite-2M is the two-layered monoclinic polytypoid of CaZrTi2O7. Polymignite (metamict) is discarded as equivalent to zirconolite. Zirkelite is the cubic mineral with formula (Ti, Ca, Zr)O2-x.
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U2 - 10.1180/minmag.1989.053.373.07
DO - 10.1180/minmag.1989.053.373.07
M3 - Article
AN - SCOPUS:0024941159
SN - 0026-461X
VL - 53 pt 5
SP - 565
EP - 569
JO - Mineralogical Magazine
JF - Mineralogical Magazine
IS - 369-373
ER -