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Epidote-(Sr)

Year of discovery: 2004 (Japan as the first occurence in the World)

Locality list: A locality of epidote-(Sr)

• CaSrFeAl₂(SiO₄)₃(OH)
• CaSr(Fe,Mn)Al₂(SiO₄)₃(OH)
• [Ca²⁺][Sr²⁺][Fe³⁺][Al³⁺₂][OH|O|SiO₄|Si₂O₇]^13-

• Class: Epidote group < Epidote supergroup
• Class: Sorosilicate - Nesosilicate - Oxide - Hydroxide

• Sr => Ca: Epidote
• Sr => Pb: Epidote-(Pb)
• Sr => Ce: Allanite-(Ce)
• Sr => Y: Allanite-(Y)
• Sr => La: Allanite-(La)
• Sr => Nd: Allanite-(Nd)

• Fe => Al: Clinozoisite-(Sr)
• Fe => Mn: Piemontite-(Sr)

• Color: Dark red, Brown
• Luster: Vitreous
• Diaphaneity: Translucent

• Cleavage: Perfect on {001} (1 plane)
• Hardness: 6.5

• System: Monoclinic
• Group: 2/m, P2₁/m
• Lattice: a=8.9, b=5.7, c=10.2, β=114.5

Etymology: Epidoses (colorful) in Greek