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Calkinsite-(Ce)

Year of discovery: 1953 (Big Sandy Creek, USA), 1985 (Japan)

Locality list: A locality of calkinsite-(Ce)

• Ce₂(CO₃)₃,4H₂O
• (Ce,La)₂(CO₃)₃,4H₂O
• [Ce³⁺₂][(CO₃)₃]^6-,4H₂O

• Class: Carbonate - Hydrate
• Soluble in: HCl (with bubbles)
• Radioactive: Weak

• Ce => La: Lanthanite-(La)
• Ce => Nd: Lanthanite-(Nd)
• Ce => Y: Tengerite-(Y)

• 4H₂O => 8H₂O: Lanthanite-(Ce)

• Color: Pale yellow

• Cleavage: Perfect on {010} (1 plane), Perfect on {101} (2 planes)
• Hardness: 2.5
• Density: 3.3

• System: Orthorhombic
• Group: 222, P2₁221
• Lattice: a=9.6, b=12.7, c=8.9