Granite with Oligoclase Feldspar

Specimens of Granite with Oligoclase Feldspar, collected from Scotland. Granite is a coarse grain, intrusive igneous rock that consists of quartz, mica and feldspar. These granite specimens contain inclusions of Oligoclase – a sodium rich member of the plagioclase feldspar family. Specimens are available in multiple sizes and come in a white card tray with an information label.