Ankaratrite
A rock subtype
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About Ankaratrite
Unique Identifiers
Mindat ID:
50692
Long-form identifier:
mindat:1:1:50692:6
Classification of Ankaratrite
Nephelinite appears in field 15c in the QAPF diagram.
Nephelinite is found in field F in the TAS diagram.
Mineralogy of Ankaratrite
Essential minerals - these are minerals that are required within the classification of this rock:
| Feldspathoid > Nepheline | Na3K(Al4Si4O16) |
| Mica > Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Olivine Group | M2SiO4 |
Internet Links for Ankaratrite
mindat.org URL:
https://www.mindat.org/min-50692.html
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References for Ankaratrite
Reference List:
Holmes, A. (1952) The Potash Ankaratrite-Meleleucocitite Lavas of Nabagando and Mbuga Craters, south-west Uganda. Transactions of the Edinburgh Geological Society, 15 (1) 187-213 doi:10.1144/transed.15.1.187
Melluso, Leone, le Roex, Anton P., Morra, Vincenzo (2011) Petrogenesis and Nd-, Pb-, Sr-isotope geochemistry of the Cenozoic olivine melilitites and olivine nephelinites (“ankaratrites”) in Madagascar. Lithos, 127 (3) 505-521 doi:10.1016/j.lithos.2011.08.003
Tucker, Robert D., Moine, Bernard (2012) Discussion of: Petrogenesis and Nd-, Pb-, Sr-isotope geochemistry of the Cenozoic olivine melilites and olivine nephelinites (“ankaratrites”) in Madagascar by Leone Melluso, Anton P. le Roex, and Vincenzo Morra. Lithos 127, 505–521. Lithos, 140. 255-256 doi:10.1016/j.lithos.2011.11.027
Melluso, Leone, le Roex, Anton P., Morra, Vincenzo (2012) Reply to “Discussion of: Petrogenesis and Nd–Pb–Sr-isotope geochemistry of the olivine melilitites and olivine nephelinites (“ankaratrites”) in Madagascar”, by Robert D. Tucker and Bernard Moine. Lithos, 140. 257 doi:10.1016/j.lithos.2012.02.009
Caran, Şemsettin (2016) Mineralogy and petrology of leucite ankaratrites with affinities to kamafugites and carbonatites from the Kayıköy area, Isparta, SW Anatolia, Turkey: Implications for the influences of carbonatite metasomatism into the parental mantle sources of silica-undersaturated potassic magmas. Lithos, 256. 13-25 doi:10.1016/j.lithos.2016.03.024
Lake Magadi, Kajiado County, Kenya