
thumb|Amphibolite from Cape Cod, [[Massachusetts]] thumb|Garnet bearing amphibolite from Val di Fleres, Italy
via Wikipedia infobox
thumb|Amphibolite from Cape Cod, [[Massachusetts]] thumb|Garnet bearing amphibolite from Val di Fleres, Italy
Amphibolite () is a metamorphic rock that contains amphibole, especially hornblende and actinolite, as well as plagioclase feldspar, but with little or no quartz. It is typically dark-colored and dense, with a weakly foliated or schistose (flaky) structure. The small flakes of black and white in the rock often give it a salt-and-pepper appearance.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).