Alphabetical
gabbro
[noun]
A dark-colored intrusive igneous rock that consists mostly of the minerals plagioclase, pyroxene, and olivine. Gabbro has a similar composition to basalt, which is extrusive. Both gabbro and basalt are mafic rocks, composed of minerals high in iron and magnesium.
Appears in modules:
Sign in or register
For an ad-free experience and access the Visionlearning Classroom, sign in or register.