Troctolite
Classification：Igneous Rock
It is a type of gabbro, which does not contain or contain a small amount of augite.
A variety of gabbro. The main minerals are calcium rich plagioclase and olivine, sometimes containing a small amount of pyroxene. From the Greek language troktes. It means trout.
If the content of pyroxene is more than 5%, it is called olivine gabbro.
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