Specimen Number28-9-105Alternate NumberA-139Commentsfrom Bob Carpenter research collectionIn Teaching CollectionNoMineral(s)chromiteField NotesSteelport seam of Steelpoort mineRock Namepolished plugsDistrictBushveldMineSteelpoort External LinkMindatDeposit TypeLayered mafic intrusionGeo-Coords[1] Reference MaterialACL-104: Symposium on the Bushveld Igneous Complex and other Layered Mafic Structures, Abstracts and Summaries of Papers, Geological Society of South Africa, Twelfth Annual Congress, Pretoria, South Africa, July, 1969, 42 p.
ACL-107: Ackermann, P.B., 1969, Symposium on the Bushveld Igneous Complex and other Layered Mafic Intrusions, Excursion Guide to the western part of the Bushveld Complex, Geol. Soc. S. Africa 12th Annual Congress, July, 1969, Pretoria, South Africa, 15 p.
ACL-108: von Gruenewaldt, G., 1969, Excursion Guide to the eastern part of the Bushveld Complex, Geol. Soc. S. Africa 12th Annual Congress, July, 1969, Pretoria, South Africa, 16 p.
ACL-230: Mertie, J.B., 1969, Economic Geology of the Platinum Metals; U.S. Geol. Surv. Bull. 630, Washington, D.C., 120 p.
28-9-105: polished plugs - Bushveld District - Steelpoort Mine. Franklin College Collections, accessed 12/06/2026, https://digitalcollections.franklin.uga.edu/nodes/view/36110