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Ferrobustamite

Year of discovery: 1937 (Camas Malag, UK), 1964 (Japan)

Locality list: 17 localities of ferrobustamite

• CaFeSi₂O₆
• Ca(Fe²⁺,Ca,Mn²⁺)Si₂O₆
• [(Ca²⁺,Fe²⁺)₃][Si₃O₉]^6-

• Class: Wollastonite group < 3-periodic < Pyroxenoid
• Class: Inosilicate (Single chain)

• Fe => Mn: Bustamite
• Fe => Ca: Wollastonite

• Ca => Fe: Pyroxferroite

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

• Cleavage: Perfect on {100} (1 planes), Good on {001} and {102} (2 planes)
• Hardness: 6
• Density: 3.1

• System:Triclinic
• Group: (-1), P(-1)
• Lattice: a=7.9, b=7.3, c=14.0, α=89.7, β=95.5, γ=103.5

Etymology: A. Bustamente, Mexican general

Synonym: Ironwollastonite