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Murakamiite

Year of discovery: 2016 (Japan)

Locality list: A locality of murakamiite

• LiCa₂Si₃O₈(OH)
• [Li⁺][Ca²⁺₂][HSi₃O₉]^5-

• Class: Wollastonite group < 3-periodic < Pyroxenoid
• Class: Inosilicate (Single chain) - Hydroxide
• Fluorescence: Long UV excitation (Purplish pink)

• Li => Na: Pectolite

• Ca => Mn: Tanohataite

• Color: Colorless, White
• Streak: White
• Luster: Vitreous, Silky
• Diaphaneity: Transparent-Translucent

• Cleavage: Perfect on {100}{001} (2 planes)
• Hardness: 4.5-5
• Density: 2.9

• System: Triclinic
• Group: (-1), P(-1)
• Lattice: a=7.9, b=7.0, c=7.0, α=90.6, β=95.6, γ=102.8

Etymology: Professor Nobuhide Murakami (1923-1994), Japanese petrologist of Yamaguchi University