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The uppermost of these consists of ferruginous sands, the second of sands and clay, and the third or lowest of a brown clay, abounding in fossils. Pebbles of quartzose sandstone, jasper, and flinty slate, together with grains of chlorite and mica, and, as Mr.
When it alternates with these rocks, it often contains some crystals of mica, and occasionally quartz, feldspar, hornblende, talc, chlorite, garnet, and other minerals. It enters sparingly into the structure of the hypogene districts of Norway, Sweden, and Scotland, but is largely developed in the Alps.
We passed some curious masses of crumpled chlorite slate, presenting deep canals or furrows, along which a demon once drained all the water from the Pemiongchi spur, to the great annoyance of the villagers: the Lamas, however, on choosing this as a site for their temples, easily confounded the machinations of the evil spirit, who, in the eyes of the simple Lepchas, was answerable for all the mischief.
On some of them the coal-beds form part of the cliffs along the shore; on others, copper is found in a chlorite and talcose slate. The latter is more particularly the case with Luzon, and the same formation extends to Mindoro. Much iron occurs on the mountains. These are, occasionally, obtained by the Spaniards in their excursions into the interior against these bands.
The asbestos occurs in the same quarries with this marble, just as this mineral is usually associated with talc schist, in which chlorite and mica are often present. Strabo places the quarries of cipollino at Marmorium, a place upon the coast near Carystos; but Mr.
The face of the hill was very stony, and I found, on examination, that a great change had taken place in the rock-formation, the granite ranges having given place to chlorite schist. We reached Whaby's about 9 a.m. of the morning of the 27th, and received every attention and civility from him.
A mineralogical error gave celebrity to Esmeralda. The granites of Duida and Maraguaca contain in open veins fine rock-crystals, some of them of great transparency, others coloured by chlorite or blended with actonite; these were mistaken for diamonds and emeralds.
Thin layers of feldspar, swelling at intervals into well crystallised kernels, are sometimes included in these black schists; and I observed one mass of the ordinary black variety insensibly lose its fissile structure, and pass into a singular mixture of chlorite, epidote, feldspar, and mica.
Hardly half a league from the latter place, and close to the sea, a cliff of crystal lime rock rises up out of the sandy plain, which was level up to this point. It is of a greyish-green quartzose chlorite schist, from which the enterprising Father had endeavored, with a perseverance worthy of better success, to procure lime by burning.
Beautiful pink balsams covered the ground, but at this season few other showy plants were in flower: the rocks were chlorite, very soft and silvery, and so curiously crumpled and contorted as to appear as though formed of scaled of mica crushed together, and confusedly arranged in layers: the strike was north-west, and dip north-east from 60 degrees to 70 degrees.
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