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Clinozoisite-(Sr)

Year of discovery: 2002 (Japan as the first occurence in the World)

Locality list: 4 localities of clinozoisite-(Sr)

• CaSrAl₃(SiO₄)₃(OH)
• [Ca²⁺Sr²⁺][Al³⁺][Al³⁺₂][OH|O|SiO₄|Si₂O₇]^13-

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

• Sr => Ca: Zoisite, Clinozoisite

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

• Al₂ => Mn₂: Manganipiemontite-(Sr)

• Color: Pale yellowish green, Pale gray
• Streak: White
• Luster: Vitreous
• Diaphaneity: Translucent

• Habit: Long prismatic

• Cleavage: Perfect on {001} (1 planes)
• Hardness: 5-5.5
• Density: 3.4

• System: Monoclinic
• Group: 2/m, P2₁/m
• Lattice: a=8.9, b=5.6, c=10.2, β=115.1

Etymology: Sr-bearing Clinozoisite in Greek

Synonym: Niigataite