| In geologic terms the Vladaya granite is classified as a monzonite due to its low percentage of the mineral quartz. |
| The northwestern parts of La Hague comprise a suite of igneous units ranging in composition from diorite to granite monzonite collectively termed the Northern Granites. |
| Permian and Triassic plutonic complexes comprise monzonite, granite, granodiorite or tonalite with minor gabbro and diorite. |
| However, the geological units in the area tend to be essentially intrusive in nature, and composed of the quartz monzodiorite, monzonite and biotite monzodiorite of the Radisson pluton. |
| The St Martin monzonite is the earliest member of the Northern Granites. |
| They have been formed by the dissemination of copper minerals in the crushed or fractured periphery of intrusive igneous bodies of such granitic rocks as quartz monzonite and diorite porphyry. |
