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Noelbensonite

Year of discovery: 1996 (Woods mine, Australia), 1995 (Japan)

Locality list: 2 localities of noelbensonite

• BaMn₂Si₂O₇(OH)₂,H₂O
• [Ba²⁺][Mn³⁺₂][(OH)₂|Si₂O₇]^8-,H₂O

• Class: Lawsonite group
• Class: Sorosilicate - Hydroxide - Hydrate

• Ba => Sr: Hennomartinite

• Color: Dark brown
• Streak: Yellowish brown
• Luster: Vitreous
• Diaphaneity: Transparent-Translucent

• Cleavage: No
• Hardness: 4
• Density: 4.9

• System: Orthorhombic
• Group: mmm, Cmcm
• Lattice: a=6.3, b=9.1, c=13.6

Synonym: Noélbensonite