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

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44 OUR MINERAL RESERVES. mineral, the remainder of the celestite zone appearing rather sandy. The mineral presents a variety of appearances. The high density, of course, characterizes the purest material. In general it is rather light colored. In California celestite, together with salt, gypsum, and other important economic minerals, occurs along the northeast margin of the Avawatz Mountains, in San Bernardino County. The minerals are located on land of the Avawatz Salt & Gypsum Co., near the south end of Death Valley. The nearest railroad is the Tonopah & Tidewater, about 10 miles east of the southeast end of the claims. The celestite occurs in lake beds associated with salt and gypsum. Above the lower lake beds and below the gypsum occur the celestite beds. The celestite is exposed in the form of resistant “ hogbacks,” in some places flanking the ridges and in others cutting them and continuing across the valleys between them. The thickness of the celestite zone may be locally as much as 75 or 80 feet, but the exact thickness is difficult to ascertain in all places, owing to the presence of wash and talus. It must not be understood that the entire thick ness of the outcropping reef is pure celestite. It is more than prob able that the pure mineral will be found in some places in thin bands and streaks and in others more or less intimately mixed with gypsum, sand, chalcedony, clay, and the oxides of manganese, iron, etc. The typically exposed reefs of celestite are dark brown in color and are conspicuous beside the light-colored gypsum. This dark-brown color may be due to the presence of manganese or iron oxides, or both. In the vicinity of Schoharie, Schoharie County. N. Y., celestite and strontianite have been found in a rather impure limestone. They occur in pockets and thin seams and have been found in greatest quantity on the east side of Schoharie River, near quarries in lime stone of the Ilelderberg group. Strontianite also occurs in rocks of the Clinton formation near Clinton, Oneida County, N. Y., asso ciated with celestite in geodes. The best examples of the occurrences were found at the old quarries near Lairdsville, 2 miles west of Ham ilton College. Celestite and strontianite have also been found near Theresa and on the shore of Chaumont Bay, in Jefferson County, N. Y. About 2 miles from the village of Adams Center, in Jefferson County, a vein of celestite is known to occur in the Trenton limestone. An occurrence has also been reported near Lockport, Niagara County. E. H. Kraus has reported celestite as disseminated through dolomitic limestone near Syracuse. Other places in New York where celestite is said to occur are at the Rossie lead mine and Stark, in St. Lawrence County, and at Depauville, in Jefferson County. One of the most noted localities in the United States where stron tium minerals have been found is Put-in-Bay, South Bass Island, Ottawa County, Ohio. Here celestite was found in 1897 during the

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