enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Azurite - Wikipedia

    en.wikipedia.org/wiki/Azurite

    Azurite or Azure spar [5]: 14 is a soft, deep-blue copper mineral produced by weathering of copper ore deposits. During the early 19th century, it was also known as chessylite , after the type locality at Chessy-les-Mines near Lyon , France . [ 3 ]

  3. Copper mining in the United States - Wikipedia

    en.wikipedia.org/wiki/Copper_mining_in_the...

    The principal mines were the Iron Mountain Mine, Mammoth Mine, and the Balaklala Mine. Copper production began in 1894, and continued off-and-on until 1976. Total production was 320 thousand tonnes of copper , 93 million pounds of zinc , 36 million troy ounces of silver , and 520,000 ounces of gold .

  4. Geology of Oklahoma - Wikipedia

    en.wikipedia.org/wiki/Geology_of_Oklahoma

    The geology of Oklahoma is characterized by Carboniferous rocks in the east, Permian rocks in the center and towards the west, and a cover of Tertiary deposits in the panhandle to the west. The panhandle of Oklahoma is also noted for its Jurassic rocks as well.

  5. Tri-State district - Wikipedia

    en.wikipedia.org/wiki/Tri-State_district

    View of mines, plant, rail yard in Cardin, Oklahoma (1922) An unusual cluster of galena crystals from the Tri-State district. The gold-colored mineral is chalcopyrite. Size: 3.9 x 3.4 x 2.5 cm. The Tri-State district was a historic lead-zinc mining district located in present-day southwest Missouri, southeast Kansas and northeast Oklahoma. The ...

  6. Arbuckle Mountains - Wikipedia

    en.wikipedia.org/wiki/Arbuckle_Mountains

    Geologic map A field of flowers in the Arbuckle foothills. Geologically the Arbuckles are an elongate anticline structure with an orientation or strike of west-northwest. The core of the structure consists of Proterozoic extrusive and intrusive rocks, the Colbert rhyolite porphyry and the Tishomingo granite (age dated at 1374 Ma), [3] which are overlain by the Arbuckle Group, the Simpson Group ...

  7. Tar Creek Superfund site - Wikipedia

    en.wikipedia.org/wiki/Tar_Creek_Superfund_site

    Tar Creek is an area of 1,188 square miles located in Ottawa County, Oklahoma, within the Tri-State district of lead and zinc mining in Northeastern Oklahoma, Southwestern Missouri, and Southeastern Kansas. The first mining took place in Missouri around 1850. By 1908, sites had been started in Miami, Picher, and Commerce. The construction of ...

  8. Miami Mineral Belt Railroad - Wikipedia

    en.wikipedia.org/wiki/Miami_Mineral_Belt_Railroad

    The Miami Mineral Belt Railroad (MMBR) served the Miami and Picher lead mining areas in that portion of the Tri-state mining district located in far northeastern Oklahoma.It was closely associated with the St. Louis-San Francisco Railway (Frisco) for its entire history, and was eventually absorbed into the Frisco.

  9. Mineral, Oklahoma - Wikipedia

    en.wikipedia.org/wiki/Mineral,_Oklahoma

    But when Cimarron County was created upon Oklahoma statehood in 1907, Mineral was not one of the six settlements which vied to become the county seat (with Boise City emerging the winner). [2] By 1910, rail lines extended well into New Mexico and Colorado, and traffic along the Santa Fe Trail dropped considerably. [ 1 ]