Borengite
A rock subtype
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Name:
Rock name comes from the type locality Båräng (Eckermann, 1960).
An aphanitic dyke-rock with the highest recorded K2O concentrations (more than 14 wt.%) among alkalic intermediate igneous rocks.
Despite the description by Von Eckermann, it is not a true ultrapotassic rock, just an orthoclase-rich Alkali-feldspar-trachyte (Foley et al., 1987).
Despite the description by Von Eckermann, it is not a true ultrapotassic rock, just an orthoclase-rich Alkali-feldspar-trachyte (Foley et al., 1987).
Unique Identifiers
Mindat ID:
50987
Long-form identifier:
mindat:1:1:50987:1
Similar Names
| Beringite | A rock subtype |
Classification of Borengite
Mineralogy of Borengite
Essential minerals - these are minerals that are required within the classification of this rock:
| Feldspar > Alkali Feldspar > Orthoclase | K(AlSi3O8) |
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Internet Links for Borengite
mindat.org URL:
https://www.mindat.org/min-50987.html
Please feel free to link to this page.
Please feel free to link to this page.
References for Borengite
Reference List:
Le Bas, M. J. (1981) Carbonatite magmas. Mineralogical Magazine, 44 (334) 133-140 doi:10.1180/minmag.1981.044.334.02
Foley, S.F., Venturelli, G., Green, D.H., Toscani, L. (1987) The ultrapotassic rocks: Characteristics, classification, and constraints for petrogenetic models. Earth-Science Reviews, 24 (2) 81-134 doi:10.1016/0012-8252(87)90001-8
Mitchell, Roger H.; Bergman, Steven C. (1991) Petrology of Lamproites. Springer US. p.1-447. doi:10.1007/978-1-4615-3788-5
