- N'Chwaning III mine
- Kalahari Manganese Field
- Northern Cape Province
- South Africa
- 4.2 by 3.8 by 3.1 cm – Miniature specimen (fits into a 5 cm cube)
Jacobsite is a iron-manganese spinel group mineral originally found at and named after Jakobsberg in Sweden (Damour, 1869). This specimen came from a recent find debuted at the Tucson Show in 2013, but probably produced in 2012. The minerals forms brilliant black octahedra to 3 mm with calcite.
Item code: MS0903
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