Tourmaline, cyclosilicate mineral.
Sinònims
Examples for "schörl"
Examples for "schörl"
1We found in it a group of fine crystals of black schorl.
2I observed neither hornblende, black schorl, nor rutile titanite, in this granite.
3Sometimes the red schorl occurs only in dendritic crystals of a bright red.
4In another place, I found crystals of black schorl radiating from a common centre.
5Roche hermitage in Cornwall occupies a spire of rocks of schorl that shoots 100 feet above the surrounding moor.