1) Metamorphic rock 
Amphibolite t is a metamorphic rock consisting mainly of amphibole, especially the species hornblende and actinolite. A holocrystalline plutonic igneous rock composed primarily of hornblende amphibole is called a hornblendite, which are usually crystal cumulates. Rocks with >90% amphiboles which have a feldspar groundmass may be a lamprophyre. Amp...
a rock composed largely or dominantly of minerals of the amphibole group. The term has been applied to rocks of either igneous or metamorphic origin. ... [4 related articles]
Amphibolite is a non-foliated metamorphic rock that forms through recrystallization under conditions
A metamorphic rock consisting mostly of amphibole and plagioclase feldspar.
[n] - a metamorphic rock composed chiefly of amphibole and plagioclase
See under soil type Floor type Next to climate and grape variety, one of the most important factors influencing the quality of wine. The different soil types have developed over millions of years through physical and chemical weathering of rocks and through humification of organic matter. During physical weathering, natural forces such as wind...
noun a metamorphic rock composed chiefly of amphibole and plagioclase
A gneiss or schist largely made up of amphibole and plagioclase minerals.
a metamorphic rock composed mainly of amphibole and plagioclase.