sentences:  The dolerite is coarse grained in the main, often equigranular and holocrystalline although porphyritic areas are known and chilled margins and occasional compositional variations are noted.It is often epidotised, carbonated and sodium metasomatised in proximity to major structures.It can often be reasonably strained throughout its bulk and especially in the footwall contact with the Widgiemooltha Komatiite.