mica-slate

Looking to its earliest origin, the red granite seems to have been injected on an ancient pre-existing line of white granite and mica-slate.

Journal of researches into the geology and natural history of the various countries visited by H.M.S. Beagle 2003

The coast is so very rugged that to attempt to walk in that direction requires continued scrambling up and down over the sharp rocks of mica-slate; and as for the woods, our faces, hands, and shin-bones all bore witness to the maltreatment we received, in merely attempting to penetrate their forbidden recesses.

Journal of researches into the geology and natural history of the various countries visited by H.M.S. Beagle 2003

The coast is so very rugged that to attempt to walk in that direction requires continued scrambling up and down over the sharp rocks of mica-slate; and as for the woods, our faces, hands, and shin-bones all bore witness to the maltreatment we received, in merely attempting to penetrate their forbidden recesses.

Journal of researches into the geology and natural history of the various countries visited by H.M.S. Beagle 2003

The granite was capped with mica-slate, and this in the lapse of ages had been worn into strange finger-shaped points.

Journal of researches into the geology and natural history of the various countries visited by H.M.S. Beagle 2003

Konig found in the finer-grained varieties “minute noble garnets,” which also appeared in the mica-slate of

Two Trips to Gorilla Land and the Cataracts of the Congo 2003

One side of the creek was formed by a spur of mica-slate; the head by a cliff of ice about forty feet high; and the other side by a promontory fifty feet high, built up of huge rounded fragments of granite and mica-slate, out of which old trees were growing.

Journal of researches into the geology and natural history of the various countries visited by H.M.S. Beagle 2003

Looking to its earliest origin, the red granite seems to have been injected on an ancient pre-existing line of white granite and mica-slate.

Journal of researches into the geology and natural history of the various countries visited by H.M.S. Beagle 2003

Zagázig; and Anton, the dragoman, triumphantly bore away fragments bristling with mica-slate, whose glitter he fondly conceived to be silver.

The Land of Midian 2003

The granite was capped with mica-slate, and this in the lapse of ages had been worn into strange finger-shaped points.

Journal of researches into the geology and natural history of the various countries visited by H.M.S. Beagle 2003

One side of the creek was formed by a spur of mica-slate; the head by a cliff of ice about forty feet high; and the other side by a promontory fifty feet high, built up of huge rounded fragments of granite and mica-slate, out of which old trees were growing.

Journal of researches into the geology and natural history of the various countries visited by H.M.S. Beagle 2003