Origin of schorl
Examples from the Web for schorl
Greisen is closely connected with schorl rock both in its mineralogical composition and in its mode of origin.
The exterior parts of the veins consist of a bluish quartz, very compact, and uniformly containing a great deal of Schorl.A Guide to the Mount's Bay and the Land's End|John Ayrton Paris
The granite is dark red, often inclosing veins of quartz, crystallized and compact, and likewise well-formed crystals of schorl.On the Old Road, Vol. 2 (of 2)|John Ruskin
This is more especially true of chlorite, schorl, hornblende and augite.A Textbook of Assaying: For the Use of Those Connected with Mines.|Cornelius Beringer and John Jacob Beringer
On its northern slope is a vast mass of schorl, the celebrated Roche Rock.Nooks and Corners of Cornwall|C. A. Dawson Scott