Definition
Troctolite is a mafic intrusive rock type. It consists essentially of major but variable amounts of olivine and calcic plagioclase along with minor pyroxene. It is an olivine-rich anorthosite, or a pyroxene-depleted relative of gabbro
History
Origin
-
Discoverer
Christian Leopold von Buch
Etymology
From German Troklotit, from Greek trōktēs, a marine fish (taken to be trout)
Class
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Family
Group
Plutonic
Other Categories
Coarse Grained Rock, Opaque Rock