This specimen is composed of sparkling, dark red black, massive to crystalline manganvesuvianite intergrown with an unidentified white mineral (barite?). The prismatic manganvesuvianite crystals are generally opaque and not terminated, and reach about 3 mm in length. Probably from the N'chwaning II Mine, which is the type locality for this species. Manganvesuvianite - Ca₁₉Mn³⁺Al₁₀Mg₂(SiO₄)₁₀(Si₂O₇)₄O(OH)₉ is the analog of vesuvianite - Ca₁₉Fe³⁺Al₁₀Mg₂(SiO₄)₁₀(Si₂O₇)₄O(OH)₉ in which Fe³⁺ has been replaced by Mn³⁺. Typical for the species/locality.