"Schorl" Quotes from Famous Books
 ... junction of the Bell with the Macquarie, free-stone supersedes the limestone, but as the country falls rapidly from that point, it soon disappears, and the traveller enters upon a flat country of successive terraces. A schorl rock, of a blue colour and fine grain, composed of tourmaline and quartz, forms the bed of the Macquarie at the Cataract; and, in immediate contact with it, a mass of mica slate of alternate rose, pink, and white, was observed, which must have been ...
— Two Expeditions into the Interior of Southern Australia, Complete • Charles Sturt
... Land's End, while the submarine plateau follows a similar gradient. Structurally, therefore, these isles are a continuation of Land's End, but the granite has become less consistent and more friable; it is largely broken into felspar, quartz, and mica, with schorl, chlorite, and hornblende. No great elevation is attained—nothing above 160 feet; the grandeur of the coasts, which certainly does not equal that of North Cornwall, consists in their rugged wildness and the fantastic weathering of their crags. Contorted formations, logans and rock-basins, ...
— The Cornwall Coast • Arthur L. Salmon
... including much hornblende: concretionary balls formed of feldspar, hornblende and mica, from two or three feet in diameter, are in very many places conformably enfolded by the foliated gneiss: veins of quartz and feldspar, including black schorl and well-crystallised epidote, are numerous. Epidote likewise occurs in the gneiss in thin layers, parallel to the foliation of the mass. One large vein of a coarse granitic character was remarkable from in one part quite changing ...
— South American Geology - also: - Title: Geological Observations On South America • Charles Darwin |
