Grain diorite. Polarised light micrograph of a sample of grain diorite in thin section. Diorite is an intrusive igneous rock,found on the margins of granite batholiths. It contains plagioclase anorthite (less than 50%,by definition) and hornblende,often with accessory inclusions of magnetite,ilmenite or quartz. The colour is an overall dark grey,with a medium to coarse grain. Its main use is as a building stone. Magnification x6 at 6x7cm size. Magnification: x11 at 5x4 inch size | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Pasieka, Alfred |
Bildgröße: | 4717 px × 3780 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |