Sorosilicate, ruizite group, manganese-bearing mineral
Hardness: 5 to 5½
Streak: Light brown
Solubility: Insoluble in water or hydrochloric acid
Taniaiajacoite is a fairly new mineral, approved in 2015.
At the type locality, the N'Chwaning III Mine, N'Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape, South Africa, both Taniaiajacoite and strontioruizite were found on chemically weathered manganese matrix probably resulting from hydrothermal activity. Taniaiajacoite occurs as brown radiating groups or aggregates of acicular or prismatic crystals, with individual crystals up to 0.15 x 0.04 x 0.02 mm. Associated minerals include acicular fibrous purple sugilite, aegirine, white pectolite, richterite, potassic-ferri-leakite, braunite-II, lipuite, hematite and microscopic namansilite and norrishite (CM 59.431-444, R&M 95.2.180-181)
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