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Inesite (Photo)

Year of discovery: 1887 (Hilfe Gottes mine, Germany), 1930 (Japan)

Locality list: 36 localities of inesite

• Ca₂Mn₇Si₁₀O₂₈(OH)₂,5H₂O
• Ca₂(Mn,Fe)₇Si₁₀O₂₈(OH)₂,5H₂O
• [Ca²⁺₂][Mn²⁺₇][(HSi₅O₁₅)₂]^18-,5H₂O

• Class: Inosilicate (Single chain) - Hydrate

• Color: Pink
• Tarnish: Brown (by weathering)
• Streak: White
• Luster: Vitreous
• Diaphaneity: Translucent

• Habit: Acicular
• Aggregate: Radial

• Cleavage: Perfect on {010} (1 plane), Good on {100} (1 plane)
• Hardness: 5.5-6
• Density: 3.0

• System: Triclinic
• Group: (-1), P(-1)
• Lattice: a=8.9, b=9.2, c=12.0, α=91.8, β=132.6, γ=94.4