Louis V. (Louis Valentine) Pirsson.
Rocks and rock minerals; a manual of the elements of petrology without the use of the microscope, for the geologist, engineer, miner, architect, etc., and for instruction in colleges and schools online
. (page 35 of 35)
Online Library → Louis V. (Louis Valentine) Pirsson → Rocks and rock minerals; a manual of the elements of petrology without the use of the microscope, for the geologist, engineer, miner, architect, etc., and for instruction in colleges and schools → online text (page 35 of 35)
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Petrology defined, 1, 2.
" history of, 4.
" of igneous rocks, 132.
Phenocrysts, 156, 245.
" pseudo, 342.
Phlogopite, 52.
Phonolite, 250.
Phosphate rock, 314.
Phosphoric acid, test for, 122.
Phosphorite, 314.
Phyttite, 372.
Pitchstone, 265.
Plagioclase feldspar, 34, 35.
Poikilitic texture, 239.
Porphyroid, 373.
Porphyry, 156, 242.
" basalt, 254.
" classification of, 195.
" diorite, 244.
" dolerite, 244.
" felsite, 251.
" granite, 243.
" labradorite, 257.
" syenite, 243.
Post-intrusive processes, 174.
Potash, test for, 120.
Pudding-stone, 321.
Pumice, 266.
Pyrite, 94.
Pyroxene, 55, 57.
alteration of, 58.
" determination of, 00.
Pyroxene-rock, 389.
Pyroxenite, 238.
Quantitative classification, 203.
Quartz, 83.
Quartzite, 366.
" oolitic, 368.
Rhyolite, 250.
Rock salt, 113, 295.
Rocks defined, 3.
" determination of, 398.
" general classification of, 6
" table to determine, 405.
Sagvandite, 391.
Salic defined, 146.
Sand, 278, 280.
Sandstone, 323.
Scale of hardness, 30.
Schist, talc, 374.
" mica, 361.
" hornblende, 379. t
hydro-mica, 373.
" greenstone, 377.
" glaucophane, 383.
" chlorite, 376.
Schistose texture, 340.
Schlieren, 164.
Schorl, 78.
Scoria, 266.
Selenite, 111.
Sericite, 54.
Serpentine, 100.
Serpentine, rock, 392.
Shale, 327.
" alum, 329.
Siderite, 110, 301.
Silica, test for, 115.
Sillimanite, 78.
Silt, 278, 280.
Sinter, calcareous, 313.
" siliceous, 298.
Slate, 369.
" cleavage of, 371.
Soapstone, 378, 391.
Soda, test for, 119.
Sodalite. 48.
414
INDEX
Soil, formation of, 276.
" gradation of, 278.
" movement of, 277.
Specific gravity of minerals, 30.
" " " rocks, 401.
" " table of, 31.
Specular iron ore, 91.
Spherulites, 264.
Spinel, 90.
Staurolite, 76.
Steatite, 378.
Stilbite, 103.
Stocks, 138.
Stratified rocks, 275, 293.
" chemical origin of,
287.
Stratified rocks, classification of,
290.
Stratified rocks, color of, 286.
" " minerals of, 290.
* " origin of, 275.
" " structures of, 282.
" " texture of, 284.
Streak of minerals, 25.
Structures of igneous rocks, 158.
" " metamorphic rocks,
340.
Structures of stratified rocks, 282.
Sulphuric acid, test for, 121.
Syenite, 218.
" common, 219.
" corundum, 226.
" nephelite, 221.
Syenite-porphyry, 243.
Table determining rocks, 404.
" " minerals, 122.
Talc, 102.
Talc-schist, 374, 391.
Test for alumina, 117.
calcium, 119.
carbonates, 115.
chlorine, 121.
fluorine, 121, 81.
gelatinization, 115.
iron, 118.
lime, 119.
magnesium, 119.
phosphoric acid, 122.
potash, 120.
silicates, 115.
" sodium, 119.
Test for sulphuric acid, 121.
" " water, 120.
Texture, augen, 343.
even-granular, 155.
factors influencing, 151.
foliated, 341.
" igneous rock, 150, 151.
154.
Texture, lenticular, 341.
" metamorphic rock, 340.
" poikilitic, 239.
" porphyritic, 156.
" pseudo-porphyritic, 342.
" relation to occurrence
153.
"Texture, schistose, 341.
" slaty, 342.
Thin sections, 8.
Tinguaite, 222, 254.
Topaz, 81.
Tourmaline, 78.
Trachyte, 250.
Trap, 257.
Travertine, 312.
Tremolite, 61, 63.
Tripolite, 298.
Tro -tolite, 230.
Tufa, calcareous, 312.
Tuff, volcanic, 140, 272.
" " origin of, 269.
Twinning of crystals, 36.
" multiple, 38.
" use of, 46.
Uralite, 66.
Variation of minerals, 142.
" diagram of, 145.
Vesicular structure, 158.
Vesuvianite, 75.
Vitrophyre, 267.
Volcanic tuff, 272.
" breccia, 272.
Wacke, 259.
Water, test for, 120.
Weathering, belt of, 337.
" of rocks, 276.
Wollastonite-rock, 388.
Zeolites, 103.
Zinnwaldite, 52.
Zoisite, 74.
A 000652105 8
" history of, 4.
" of igneous rocks, 132.
Phenocrysts, 156, 245.
" pseudo, 342.
Phlogopite, 52.
Phonolite, 250.
Phosphate rock, 314.
Phosphoric acid, test for, 122.
Phosphorite, 314.
Phyttite, 372.
Pitchstone, 265.
Plagioclase feldspar, 34, 35.
Poikilitic texture, 239.
Porphyroid, 373.
Porphyry, 156, 242.
" basalt, 254.
" classification of, 195.
" diorite, 244.
" dolerite, 244.
" felsite, 251.
" granite, 243.
" labradorite, 257.
" syenite, 243.
Post-intrusive processes, 174.
Potash, test for, 120.
Pudding-stone, 321.
Pumice, 266.
Pyrite, 94.
Pyroxene, 55, 57.
alteration of, 58.
" determination of, 00.
Pyroxene-rock, 389.
Pyroxenite, 238.
Quantitative classification, 203.
Quartz, 83.
Quartzite, 366.
" oolitic, 368.
Rhyolite, 250.
Rock salt, 113, 295.
Rocks defined, 3.
" determination of, 398.
" general classification of, 6
" table to determine, 405.
Sagvandite, 391.
Salic defined, 146.
Sand, 278, 280.
Sandstone, 323.
Scale of hardness, 30.
Schist, talc, 374.
" mica, 361.
" hornblende, 379. t
hydro-mica, 373.
" greenstone, 377.
" glaucophane, 383.
" chlorite, 376.
Schistose texture, 340.
Schlieren, 164.
Schorl, 78.
Scoria, 266.
Selenite, 111.
Sericite, 54.
Serpentine, 100.
Serpentine, rock, 392.
Shale, 327.
" alum, 329.
Siderite, 110, 301.
Silica, test for, 115.
Sillimanite, 78.
Silt, 278, 280.
Sinter, calcareous, 313.
" siliceous, 298.
Slate, 369.
" cleavage of, 371.
Soapstone, 378, 391.
Soda, test for, 119.
Sodalite. 48.
414
INDEX
Soil, formation of, 276.
" gradation of, 278.
" movement of, 277.
Specific gravity of minerals, 30.
" " " rocks, 401.
" " table of, 31.
Specular iron ore, 91.
Spherulites, 264.
Spinel, 90.
Staurolite, 76.
Steatite, 378.
Stilbite, 103.
Stocks, 138.
Stratified rocks, 275, 293.
" chemical origin of,
287.
Stratified rocks, classification of,
290.
Stratified rocks, color of, 286.
" " minerals of, 290.
* " origin of, 275.
" " structures of, 282.
" " texture of, 284.
Streak of minerals, 25.
Structures of igneous rocks, 158.
" " metamorphic rocks,
340.
Structures of stratified rocks, 282.
Sulphuric acid, test for, 121.
Syenite, 218.
" common, 219.
" corundum, 226.
" nephelite, 221.
Syenite-porphyry, 243.
Table determining rocks, 404.
" " minerals, 122.
Talc, 102.
Talc-schist, 374, 391.
Test for alumina, 117.
calcium, 119.
carbonates, 115.
chlorine, 121.
fluorine, 121, 81.
gelatinization, 115.
iron, 118.
lime, 119.
magnesium, 119.
phosphoric acid, 122.
potash, 120.
silicates, 115.
" sodium, 119.
Test for sulphuric acid, 121.
" " water, 120.
Texture, augen, 343.
even-granular, 155.
factors influencing, 151.
foliated, 341.
" igneous rock, 150, 151.
154.
Texture, lenticular, 341.
" metamorphic rock, 340.
" poikilitic, 239.
" porphyritic, 156.
" pseudo-porphyritic, 342.
" relation to occurrence
153.
"Texture, schistose, 341.
" slaty, 342.
Thin sections, 8.
Tinguaite, 222, 254.
Topaz, 81.
Tourmaline, 78.
Trachyte, 250.
Trap, 257.
Travertine, 312.
Tremolite, 61, 63.
Tripolite, 298.
Tro -tolite, 230.
Tufa, calcareous, 312.
Tuff, volcanic, 140, 272.
" " origin of, 269.
Twinning of crystals, 36.
" multiple, 38.
" use of, 46.
Uralite, 66.
Variation of minerals, 142.
" diagram of, 145.
Vesicular structure, 158.
Vesuvianite, 75.
Vitrophyre, 267.
Volcanic tuff, 272.
" breccia, 272.
Wacke, 259.
Water, test for, 120.
Weathering, belt of, 337.
" of rocks, 276.
Wollastonite-rock, 388.
Zeolites, 103.
Zinnwaldite, 52.
Zoisite, 74.
A 000652105 8
Online Library → Louis V. (Louis Valentine) Pirsson → Rocks and rock minerals; a manual of the elements of petrology without the use of the microscope, for the geologist, engineer, miner, architect, etc., and for instruction in colleges and schools → online text (page 35 of 35)
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