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Chrysotile [abbr. Ctl ]

Year of discovery: 1843 (Bell mine, Canada), 1899 (Japan)

Locality list: 146 localities of chrysotile

• Mg₃Si₂O₅(OH)₄
• [Mg²⁺₃][(OH)₄|Si₂O₅]^6-
• Cylindrical structure. Most chrysotile speciments are monoclinic.

• Class: 2:1 layer, Trioctahedral < Rolled-Spheroidal hydrous < Phyllosilicate subclass < Silicate class
• Class: Phyllosilicate - Hydroxide
• Soluble in: HCl (Gel residue)
• Physical: Elastic
• One of minerals called Asbestos.

• Polymorph: Antigorite (above 75 degree, Monoclinic), Lizardite (below 75 degree, Triclinic)

• Mg => Mn: Caryopilite
• Mg => Ni: Népouite (Nepouite)
• Mg => Fe: Greenalite

• Color: Green
• Streak: White
• Luster: Silky
• Diaphaneity: Translucent

• Habit: Fibrous
• Aggregate: Columnar

• Cleavage: No
• Hardness: 2.5
• Density: 2.5

• System: Monoclinic (2Mcl, Clinochrysotile), Orthorhombic (OR, Orthochrysotile), Orthorhombic (OR, Parachrysotile) (Layer-stacking polytype)
• Group: 2/m, A2/m
• Lattice: a=5.3, b=9.1, c=14.6, β=93.2

• Non-coexist: Quartz