The rugged, steeply sloping mountains are composed of Precambrian amphibolite and gneiss.    From Wordnik.com.  [Ecoregions of North Carolina and South Carolina (EPA)] Reference

The summits of Grünhorn and Finsteraarhorn are composed of green amphibolite, a very hard rock.    From Wordnik.com.  [Jungfrau-Aletsch-Bietschhorn, Switzerland] Reference

Gneiss and schists containing relatively uniform micas, with important amphibolite inclusions, are the dominant metamorphic rocks.    From Wordnik.com.  [Jungfrau-Aletsch-Bietschhorn, Switzerland] Reference

These porphyries are pierced by greenstone two or three feet thick, and the granites are intersected by numerous veins of amphibolite.    From Wordnik.com.  [Rambles in the Islands of Corsica and Sardinia with Notices of their History, Antiquities, and Present Condition.] Reference

The amphibolite, a metamorphosed black volcanic rock, formed from lavas that spilled on the floor of a shallow sea, mixing with layers of mud, sand, and volcanic ash.    From Wordnik.com.  [Ecoregions of North Carolina and South Carolina (EPA)] Reference

To further muddy the waters introduce the idea of gas fugacity – given constant P and T, greenschist assemblages can be amphibolite simply by increasing O2 fugacity.    From Wordnik.com.  [Hansen and Schmidt: Predicting the Past? « Climate Audit] Reference

These are interpreted to be Komatiitic lavas / sills, now metamorphosed to the upper amphibolite facies.    From Wordnik.com.  [Marketwire - Breaking News Releases] Reference

The oldest dates came from rocks termed "faux amphibolite," which the researchers interpret to be ancient volcanic deposits.    From Wordnik.com.  [EurekAlert! - Breaking News] Reference

The oldest dates, which came from rocks that geologists call "faux amphibolite," are thought to be ancient volcanic deposits.    From Wordnik.com.  [Latest Articles] Reference

It is believed that these zones may both be limbs of the same anticline structure whose core includes an amphibolite formation.    From Wordnik.com.  [Marketwire - Breaking News Releases] Reference

The gold showings on both the RS and Plateau areas are associated with a deca-metric drag-folded sulfurized "silicate iron formation" / "garnet-rich amphibolite" unit.    From Wordnik.com.  [Marketwire - Breaking News Releases] Reference

Regional mapping undertaken by BRGM in 1986 identified a NE-SW trending package of Archaean to Proterozoic age quartzitic metasediment, gneiss and amphibolite, as well as numerous itabirite units containing millimetre to centimetre thick bands of magnetite.    From Wordnik.com.  [Latest News - Yahoo!7 News] Reference

The results continue to be encouraging because six out of the seven drill holes testing the two kilometre long Sunday Anomaly trend during the winter program continued to intersect significant sulphidic intersections hosted in amphibolite rocks of mafic to ultrabasic composition interspersed with sections of granite gneiss and granodiorite.    From Wordnik.com.  [The Earth Times Online Newspaper] Reference