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Gittinsite

Year of discovery: 1980 (Kipawa complex, Canada), 2012 (Japan)

Locality list: A locality of gittinsite

• CaZrSi₂O₇
• [Ca²⁺][Zr⁴⁺][Si₂O₇]^6-

• Class: Thortveitite group
• Class: Sorosilicate

• Ca => K₂: Khibinskite
• Ca => Na₂: Parakeldyshite, Keldyshite

• Zr => Ca₂: Rankinite, Kilchoanite

• CaZr => Y₂: Keiviite-(Y), Yttrialite-(Y)
• CaZr => Yb₂: Keiviite-(Yb)
• CaZr => Sc₂: Thortveitite

• Color: Pale Yellow
• Streak: White

• Cleavage: No
• Hardness: 3.5-4
• Density: 3.6

• System: Monoclinic
• Group: 2/m, C2/m
• Lattice: a=6.9, b=8.8, c=4.7, β=101.7