"' Hornblendite "'is a plutonic rock consisting mainly of the amphibole hornblende.
2.
The Lherz massif also contains harzburgite and dunite, as well as layers of spinel pyroxenite, garnet pyroxenite, and hornblendite.
3.
Hornblende-rich ultramafic rocks are rare and when hornblende is the dominant mineral phase they are classified as hornblendites with qualifiers such as garnet hornblendite identifying a second abundant contained mineral.
4.
There are some curious instances of rocks having the same chemical composition, but consisting of entirely different minerals, e . g ., the hornblendite of Gran, in Norway, which contains only hornblende, has the same composition as some of the camptonites of the same locality that contain feldspar and hornblende of a different variety.
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