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abundant barite bedding planes biotite bluff boulders buff color building stone BUREAU OF GEOLOGY Burlington calcite Carthage cavities chert chert nodules clay CO.'S QUARRY Coal Measure Coal Measure shale coarsely crystalline consists contains cotton rock crusher crushing plant crushing strength crystalline limestone cubes cubic foot deposits dolomite durability east Elizabeth formation face feet long feldspar finely crystalline flint fossiliferous freezing and thawing galena Gasconade limestone GEOLOGY AND MINES granite Graniteville gray limestone Graydon sandstone hill igneous rocks inches in thickness iron oxide Jefferson City formation layers ledge lime limonite Louis macadam major joints strike miles Miller county minerals MISSOURI BUREAU opened operated Osage river outcrops pitted dolomite porosity pounds per square quarry quarry is located quartz railroad rhyolite Saline Creek samples sandstone seams shale specific gravity split square inch stripping surface suture joints tests texture thin weathered
Beliebte Passagen
Seite 323 - It follows: 1, talc; 2, gypsum; 3, calcite; 4, fluorite; 5, apatite; 6, orthoclase; 7, quartz; 8, topaz; 9, corundum; 10, diamond.
Seite 88 - knots," occur in many of the quarries, being especially abundant in the gray granite, making it unfit for either monumental or constructional work. These knots vary from a fraction of an inch to a foot or more in cross section and are usually finer grained than the granite.
Seite v - Major, and the Members of the Board of Managers of the Bureau of Geology and Mines: Gentlemen...
Seite 43 - When reckoned in per cent., the error would be such a small fraction of 1 per cent, as not to be worthy of attention. The specific gravity was determined by dividing the average of the two dry weights by the difference between the average dry weight and the weight of the cube suspended in water.
Seite 39 - valuable in determining the effect of combining masonry and metal; Df joining different kinds of masonry or of joining new masonry to old ; in calculating the effect of loading a masonry arch ; in proportioning abutments and piers of railroad bridges subject to shock, etc.
Seite 326 - The olivine group is now more correctly known as the chrysolite group. The different species differ somewhat in composition, being composed of varying proportions of magnesium, calcium, iron, and manganese, in combination with silicon and oxygen. The hardness ranges from 6 to 7. The predominant color is what is commonly known as olive green. The luster is vitreous. Olivine is a constituent, mainly, of the more basic igneous rocks, such as diabase and gabbro. It alters very extensively to chlorite,...
Seite 327 - The most important rock-forming member of this group is augite, which name is often used synonymously with pyroxene. Pyroxene is mainly a constituent of igneous rocks, being an important constituent of many of the granites, gneisses, and especially of the more basic rocks. Through the weathering processes pyroxene is slowly decomposed, altering into chlorite, calcite, and epidote. Under given conditions pyroxene weathers somewhat more rapidly than, amphibole, and for this reason is considered a less...
Seite 320 - ... a secondary and not an original structure. The parting along cleavage planes is sometimes smooth, and at other times wavy. The former is known as slatiness and the latter as schistosity.
Seite 19 - The expansive force of freezing water is graphically described by Geikie as being equal to the weight of a column of ice a mile high, or a little less than 150 tons to the square foot.
Seite 329 - The luster is vitreous. Olivine is a constituent, mainly, of the more basic igneous rocks, such as diabase and gabbro. It alters very extensively to chlorite, talc, and serpentine. TALC. Talc is composed of hydrogen, oxygen, iron, magnesium, aluminum, and silica, united in different proportions. It is usually foliated, but frequently massive or fibrous. Talc has a peculiar greasy feel which furnishes, as a rule, a ready means of distinguishing it from associated minerals. The color varies from apple...