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Monazite-(Sm)

Year of discovery: 2001 (Annie Claim no.3 pegmatite, Canada), 2012 (Japan)

Locality list: A locality of monazite-(Sm)

• SmPO₄
• (Sm,Gd,Ce,Th)PO₄
• [Sm³⁺][PO₄]^3-

• Class: Monazite group
• Class: Phosphate
• Radioactive: Strong

• Sm => Fe: Rodolicoite
• Sm => Al: Berlinite
• Sm => Y: Xenotime-(Y)
• Sm => Sc: Pretulite
• Sm => Yb: Xenotime-(Yb)
• Sm => Ce: Monazite-(Ce)
• Sm => Nd: Monazite-(Nd)
• Sm => La: Monazite-(La)

• Color: White, Yellow
• Streak: White
• Luster: Vitreous
• Diaphaneity: Tranparent-Translucent

• Cleavage: Distinct

• System: Monoclinic
• Group: 2/m, P2₁/c
• Lattice: a=6.7, b=6.9, c=6.4, β=104.0