"Feldspath" Quotes from Famous Books
 ... Egyptian statues are generally of granite, basalt, porphyry, or sandstone. The two colossi on the plain of Thebes are, of course, hard gritstone. The Egyptians also worked in dark and red granites, breccias, serpentines, arragonite, limestones, jaspers, feldspar, cornelian, glass, gold, silver, bronze, lead, iron, the hard woods, fir or cedar, sycamore, ebony, acacia, porcelain and ivory, and terra cotta. All objects, from the most gigantic obelisk to the minute articles of private life, are ...
— Museum of Antiquity - A Description of Ancient Life • L. W. Yaggy
... beneath the swamps when drained is found to be extraordinarily well suited for farming purposes. On inspecting the pebbles from such places, we observe that they are remarkably decayed. Where the masses contain large quantities of feldspar, as is the case in the greater part of our granitic and other crystalline rocks, this material in its decomposition is converted into kaolin or feldspar clay, and gives the stones a peculiar white appearance, which marks the decomposition, and indicates the process by which a great ...
— Outlines of the Earth's History - A Popular Study in Physiography • Nathaniel Southgate Shaler
... a buckskin wrap without girdle, embroidered at the lower end with multi-coloured porcupine-quills. Bracelets of white shells, a necklace of feldspar crystals and turquoises, and strings of yellow cotton threads around her ankles complete the costume. Such is the woman who has played and still plays an ominous part in the history of Okoya's mother, and in ...
— The Delight Makers • Adolf Bandelier
... by synthesis, i.e. by combining the separate elements and forming substances similar to those constructed by nature, to prove the accuracy of his processes and the correctness of his conclusions. Thus he formed, for instance, pumice-stone, feldspar, mica, iron pyrites, ...
— Familiar Letters of Chemistry • Justus Liebig
... short distance, and then the heading and bench were narrowed to 18 ft., and steam-shovel excavation was abandoned. As the heading advanced the rock grew steadily softer, the difficult conditions in this locality culminating when a slushy disintegrated feldspar was met, requiring poling and breasting. Thereafter the rock improved markedly, but near the east side of Fifth Avenue its thickness above the roof was found to be only 1-1/2 ft., and the advance was stopped, pending a decision as to a change ...
— Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910 • James H. Brace and Francis Mason
... windows of automobile curtains. With the point of a knife the bits in my piece of granite could be split into tiny sheets as thin as paper. The second material was quartz. This was grayish-white and looked somewhat like glass. The third material was feldspar. This, too, was whitish, but one or two sides of each bit were flat, as if they had not been broken, but split. This is the most common kind of granite. There are many varieties. Some of them are ...
— Diggers in the Earth • Eva March Tappan
... graphite. Pottery is clay, molded, baked, and either glazed, like crockery, or unglazed, like flower-pots. Jugs and coarse earthenware are glazed by volatilizing NaCl in an oven which holds the porous material. This coats the ware with sodium silicate. To glaze china, it is dipped into a powder of feldspar and SiO2 suspended in water and vinegar, and then fused. If the ware and glaze expand uniformly with heat, ...
— An Introduction to Chemical Science • R.P. Williams
... varying character; they consist of black, brown, and grey, compact, basaltic bases, with numerous crystals of augite, hornblende, olivine, mica, and sometimes glassy feldspar. A common variety is almost entirely composed of crystals of augite with olivine. Mica, it is known, seldom occurs where augite abounds; nor probably does the present case offer a real exception, for the mica (at least in my best characterised specimen, in which ...
— Volcanic Islands • Charles Darwin
... is then made, either of a fine white calcareous earth, consisting mainly of carbonate of lime, or of a milk-white indurated clay, almost wholly insoluble in acids, and apparently derived from decomposed feldspar with a small proportion of mica. This solution is applied to the surface of the vessel and allowed to dry; it is then ready for ...
— Illustrated Catalogue Of The Collections Obtained From The Indians Of New Mexico And Arizona In 1879 • James Stevenson |
