"Sanidine" Quotes from Famous Books
... and partly also on the east, the crater-wall has been broken down and removed; the portion remaining is about 1-1/2 mile in diameter from east to west, and reaches a height of 2,600 feet above the sea-level. All the upper part of the mountain is composed of a pumiceous tufa, rich in sanidine and of a characteristic greenish colour. At two points, to the west near Forio and to the north between Lacco and Casamicciola, this tufa is seen reaching down to the sea; but, in all other parts, it is covered by streams ... — A Study of Recent Earthquakes • Charles Davison |