N'Chwaning II Mine, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa

3.3 x 2.6 x 1.7 cm
1.3 x 1 x 0.7 in

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Ca₆(Al,Si)₂(SO₄)₂[B(OH)₄](OH,O)₁₂·26H₂O

The Charlesite crystals are the small white colored, trigonal crystals which are quite reminiscent of crystals form Franklin, the type location. Also present are small black hematite crystals with a high sparkly luster. There are also yellow colored Sturmanite crystals which are mostly obscured by a coating of orange/colored material which presumably iron oxides.

Condition: Very Good

Flaws: Nothing Appreciable

This mineral is also found in the following galleries: Minerals From Africa | Sulfates | Carbonates | Oxides and Hydroxides | Rare Minerals | Minerals Priced Between 50 and 99 Dollars