The American Journal of Science and ArtsS. Converse, 1888 - Geology |
From inside the book
Results 1-5 of 27
Page 52
... feldspar quarry near Pisek , Bohemia , where it occurs lining cavities left by the decomposition and disappearance of beryl crystals . At all of these localities the crystals are minute and are found only in small quantities . The ...
... feldspar quarry near Pisek , Bohemia , where it occurs lining cavities left by the decomposition and disappearance of beryl crystals . At all of these localities the crystals are minute and are found only in small quantities . The ...
Page 55
... feldspar readily , and with care can be made to scratch quartz , though they are apt to crush owing to their small size and good cleav- age . The specific gravity , taken with the Thoulet solution , is 2-598 . Bertrand found 2.593 ...
... feldspar readily , and with care can be made to scratch quartz , though they are apt to crush owing to their small size and good cleav- age . The specific gravity , taken with the Thoulet solution , is 2-598 . Bertrand found 2.593 ...
Page 108
... feldspar ( as determined by Professor E. S. Dana ) , which are proof of subjection to long - continued heat . The walls of Kilauea are out of the reach of such upthrust or projectile action . The explosive eruption of the summit ...
... feldspar ( as determined by Professor E. S. Dana ) , which are proof of subjection to long - continued heat . The walls of Kilauea are out of the reach of such upthrust or projectile action . The explosive eruption of the summit ...
Page 109
... feldspar , so that they are probably labradorite ; and besides , there are brilliant iron black octahedrons of mag- netite and tables of hematite or titanic iron . These are all the constituents of the basalt except the less constant ...
... feldspar , so that they are probably labradorite ; and besides , there are brilliant iron black octahedrons of mag- netite and tables of hematite or titanic iron . These are all the constituents of the basalt except the less constant ...
Page 110
... feldspar as in the ejected blocks . The origin of the stalactites of the tunnels and their crystal- lizations is due , as I state in my Expedition Report ( p . 201 ) , to " the action of steam on the roof of the cavern . " In the case ...
... feldspar as in the ejected blocks . The origin of the stalactites of the tunnels and their crystal- lizations is due , as I state in my Expedition Report ( p . 201 ) , to " the action of steam on the roof of the cavern . " In the case ...
Contents
1 | |
14 | |
33 | |
39 | |
48 | |
52 | |
59 | |
73 | |
269 | |
277 | |
286 | |
303 | |
305 | |
317 | |
332 | |
342 | |
81 | |
113 | |
119 | |
131 | |
146 | |
158 | |
162 | |
167 | |
175 | |
208 | |
222 | |
226 | |
239 | |
247 | |
254 | |
351 | |
359 | |
380 | |
392 | |
397 | |
410 | |
427 | |
443 | |
450 | |
458 | |
465 | |
468 | |
472 | |
479 | |
Other editions - View all
Common terms and phrases
absorption Acad acid action albite alloys American amount analysis angle appears atoms augite biotite bolometer Botanical Notices Botany carbon cent character chemical Coan color cone crater crinoids crystals curve cycads deposits described determined diameter effect electrical Emmons eruption experiments fact fauna feet feldspar figure fissures Flora Flora Brasiliensis formation fossils Genera genus Geological gneiss heat Hilo Hooker hornblende hydrochloric acid iron Journ Journal Kilauea lava less light limestone magnetite mass measured metal mica miles mineral molecules mountain nearly North observed obtained occur paper pinnules plants plates platinum present prism Proc Prof Professor Puget quartz ratio region Report rocks schist sillimanite Silurian slates slit soil solar solution species specific rotation specimens spectrum staurolite steel stream summit surface Survey Taconic temperature thickness tion vapors viscous wave-lengths xenotime zircon