| # | Name | Type | Locality | Size | Acquired | Thumbnail |
|---|
| 1899 | Bultfonteinite and Oyelite | Mineral | Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa | 7.7 x 2.8 x 1.5 cm | 2010-03-09 |  |
| 1420 | Bultfonteinite | Mineral | Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa | 7.8 x 6 x 6 cm | 2009-05-22 |  |
| 694 | Poldervaarite and Bultfonteinite | Micromount | Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa | | 2008-06-02 |  |
| 461 | Bultfonteinite with Poldervaartite | Mineral | N'chwaning II Mine, Kalahari Manganese Field, South Africa | 12 x 8 cm. | 2007-07-07 |  |
| 435 | Poldervaartitentineite with bultfonteinite | Mineral | N'chwaning II, Kalahari Managanese Field, Kuruman, South Africa | 9.0 x 5.0 x 1.5 cm. | 2007-04-23 |  |