We found in it a group of fine crystals of black schorl.

I observed neither hornblende, black schorl, nor rutile titanite, in this granite.

Sometimes the red schorl occurs only in dendritic crystals of a bright red.

In another place, I found crystals of black schorl radiating from a common centre.

Roche hermitage in Cornwall occupies a spire of rocks of schorl that shoots 100 feet above the surrounding moor.