The cleavage is smoother and more regular than the splitting of schist along its grain.
Here and there are mixtures of schist, gneiss, and porphyry.
The rock consists mainly of schist, but on the side next the valley there is a facing of rotten limestone.
There the vein had failed, between the schist and the tertiary sandstone.
The marble occupies two beds in schist, and between the two rocks there is gradation of composition.
I think that would be schist about as good as anything you could do.
The mercurial ore lies in a bed of clay slate, and is found both mingled with schist and in the form of cinnabar.
Why should the schist pendant of the Tappock chamber be all right, if the claystone pendant of Dunbuie be all wrong?
The rocks known as gneiss and schist are readily bored and are considered fair water bearers.
From time to time Tundup Sonam reared up a slab of schist to show the way to Tsering, who was coming behind without a guide.
type of layered metamorphic rock, 1795 (earlier schistus, c.1600), from French schiste (16c.), from Latin schistos lapis "stone that splits easily" (Pliny), from Greek skhistos "divided, separated," from skhizein "to split" (see shed (v.)). The rock splits easily in layers. Liddell and Scott says Greek skhistos lithos was "probably talc."
A highly foliated, medium-grained metamorphic rock that splits easily into flakes or slabs along well-defined planes of mica. The mineral composition of schist is varied and is often reflected in the name given to the rock. For example, a schist that contains garnet is called a garnet schist. A schist containing chlorite is called a chlorite schist.
schistose adjective (shĭs'tōs')