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Ferro-ferri-taramite from
Marinkas Kwela, Karasburg West, ǁKaras Region, Namibia


Locality type:Complex
Classification
Species:'Ferro-ferri-taramite' (not an IMA approved species)
Formula:Na(CaNa)(Fe32+Fe23+)(Al2Si6O22)(OH)2
Comments:Taramite is listed as occurring at Marinkas Kwela in several articles. The taramite root-name group was redefined in th e2012 nomenclature and the pre-2012 taramite is now ferro-ferri-taramite. In addition, the defining criteria was shifted from the T position to the C-position of the amphibole moelcule. A consequence of this is that many "taramites" are now classified as "katophorite root name group minerals. Based on analytical data of "taramites" from Smithies (1992) and Smithies & Marsh (1996), the "taramites" from here is most likely ferro-ferri-katophorites.
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Ferro-ferri-taramite data
Locality Data:Click here to view Marinkas Kwela, Karasburg West, ǁKaras Region, Namibia
Data Identifiers
Mindat Occurrence Record ID:1511053
Long-form Identifier:1:3:1511053:2
GUID (UUID V4):0
References
Bernasconi, A. (1981). The marinkas kwela alkali-granite intrusive, a probable porphyry molybdenum system of cambrian age, namibia. Mineralium Deposita, 16(3), 447-454. doi.org/10.1007%252FBF01798969
Bernasconi, A. (1986). The Marinkas kwela alkali intrusive: A porphyry molybdenum system of Cambrian age in Southern South West Africa/Namibia. In Mineral Deposits of Southern Africa (pp. 1587-1591).
Smithies, R. H. (1992). The geochemical evolution of three alkaline complexes in the Kuboos-Bremen igneous province, southern Namibia.
Smithies, R. H., Marsh, J. S. (1996) Alkaline rocks in the Kuboos-Bremen Igneous Province, southern Namibia: the Grootpenseiland and Marinkas Kwela Complexes. Communications of the Geological Survey of Namibia, 11. 13-20
 
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