Assertion: basalt's mineral | /r/HasProperty | visible
Facets:
value: to the unaided eye
type: TRANSITIVE-OBJECT
value: via microscope
type: MANNER
Source sentences:
text: For intrusive, plutonic and usually phaneritic igneous rocks (where all minerals are visible at least via microscope), the mineralogy is used to classify the rock.
text: Granite is an igneous intrusive rock (crystallized at depth), with felsic composition (rich in silica and predominately quartz plus potassium-rich feldspar plus sodium-rich plagioclase) and phaneritic, subeuhedral texture (minerals are visible to the unaided eye and commonly some of them retain original crystallographic shapes).