Our mineral reserves

Bibliographic data

Monograph

Identifikator:: 867029366

URN:: urn:nbn:de:zbw-retromon-93011

Document type:: Monograph

Author:: Smith, George Otis http://d-nb.info/gnd/117634530

Title:: Our mineral reserves

Place of publication:: Washington, DC

Publisher:: Gov. Print. Off.

Year of publication:: 1914

Scope:: 1 Online-Ressource (48 Seiten)

Collection:: Economics Books

Usage license:: Get license information via the feedback formular.

MINERAL PRODUCTS. 45 sinking of a well, the walls of which caved in, revealing a cavern in limestone. The floor, ceiling, and walls of the cave were found to be composed of celestite, and the owner reported that the mineral was found to a depth of 22 feet below the floor. In 1904 a deposit of celestite was developed 5 miles north and a little west of Austin, Tex., in the Mount Donnell and Mount Barker district. The celestite is associated with strontianite, Epsom salts, and other minerals, and occurs in a flat-lying arenaceous and argilla ceous magnesian limestone bed in the Glen Itose limestone (Lower Cretaceous). An occurrence of celestite has been noted near Cedar Cliff, Mineral County, W. Va. The rock in which the celestite crystals occur is a thickly bedded, nearly horizontal argillaceous limestone. The celes tite occurs in crystalline form in flattened lenticular cavities or pockets from a foot to a yard in diameter and from 3 to 7 inches in height. In the adjacent limestone strontium sulphate was found so abundantly as to indicate that the rock was strongly impregnated. Celestite is known to occur at Drummond, Chippewa County, Mich. In Monroe County of the same State it is found disseminated through dolomite, and at the point especially studied the upper layer of the rock contained over 14 per cent of celestite. Below this layer there is a porous stratum with cavities containing celestite and free sul phur. The sulphur is found in considerable quantities and was prob ably formed by reduction of the sulphate. Celestite has also been found near Frankstown, Blair County, Pa. ; in Brown County, northeastern Kansas; in Larimer County, Colo.; in cavities in limestone near Nashville, Tenn. ; and associated in fine, clear crystals with the colemanite of Death Valley, San Bernardino County, Cal. Strontianite occurs with celestite in New York, as already noted, and is also found in Mifflin County, Pa. OTHER PRODUCTS. The demand for several of the minor mineral products will be •stimulated by the changes in trade with Europe, with the result of increasing materially the production for 1914 and following years. In the case of pottery this movement toward a stronger hold of the domestic market is already well under way. The production in 1913 was the largest in the history of the industry. The underlying cause of this prosperity is no doubt the improvement in the charac ter of the American product in texture, finish, color, decoration, and the prevention of crazing, some of the higher grades of American pottery equaling if not surpassing some of the best imported ware. The imports of pottery have always been more or less interesting. Por many years the value of the imported pottery exceeded the value of that made at home, but about the close of the nineteenth

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