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An aphanitic ultrapotassic dyke-rock with the highest recorded K2O concentrations (more than 14 wt.%) among alkalic rocks.
Classification of BorengiteHide
Mineralogy of BorengiteHide
Essential minerals - these are minerals that are required within the classification of this rock:
Accessory minerals - these are minor components, often far less than 1% of the total mineral material: