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Neotocite (Photo)

Year of discovery: 1848 (Erik Ers mine, Sweden), 1924 (Japan)

Locality list: 183 localities of neotocite

• MnSiO₃,H₂O
• (Mn,Fe,Mg)SiO₃,H₂O
• [Mn²⁺][SiO₃]^2-,H₂O

• Class: Allophane group
• Class: Phyllosilicate - Hydrate

• Color: Dark brown, Black
• Streak: Pale brown
• Luster: Resionous
• Diaphaneity: Opaque

• Habit: Glass

• Cleavage: No
• Hardness: 3-4
• Density: 2.8

• System: Amorphous

Synonym: Penwithite