 | | Book (volume) | | rises abruptly into the 6,000 sq. mi. Black Hills region enclosed by the Belle Fourche and Cheyenne rivers...granite mass intruded the famed Cretaceous Dakota sandstone, which underlies most of the Great Plains, and...precipitation and channel it into the underlying porous sandstone. Laid down in Early Cretaceous times, as the continental...seas were advancing from the south, the Dakota sandstone represents topset beds, wave reworked, and spread...has come only from the core of the Black Hills region. Two divisions are recognized: the Northern Section |  | | Book (volume) | | entire state are all undisturbed sedimentaries: sandstone, limestone, shale and clay, with the oldest formation...this part of the state. In this rough, uncurried region are found the famed Fairburn agates, brilliantly...for gemstone materials. An extensive collecting region of agatized and opalized wood for high gem quality...Eastern Nebraska has few gemstone localities, but quarries, gravel pits and other excavations throughout...creeks: especially along Lodgepole Cr., all region S of Sidney to Ogalla, along banks of the South |  | | Book (volume) | | collectors, even though the state produces more sandstone, silica sand and Fluorspar than any other state...Mississippi rivers, and in the southern Fluorspar region. Fossil hunters are well aquatinted with the famed...Carboniferous system of repeated alterations of sandstone, shale, bituminous slates, thin bands of limestone...City Geode Location WARSAW, area rd. cuts, pits quarries, gravels, banks along regional creeks and streams...Silver, Smithsonite, Witherite. This Fluorspar region extends W into Pope Co. HENDERSON COUNTY TERRE |  | | Book (volume) | | collectors, even though the state produces more sandstone, silica sand and Fluorspar than any other state...Mississippi rivers, and in the southern Fluorspar region. Fossil hunters are well aquatinted with the famed...Carboniferous system of repeated alterations of sandstone, shale, bituminous slates, thin bands of limestone...City Geode Location WARSAW, area rd. cuts, pits quarries, gravels, banks along regional creeks and streams...Silver, Smithsonite, Witherite. This Fluorspar region extends W into Pope Co. HENDERSON COUNTY TERRE |  | | Book | | answer the purpose extremely well, and are sold in Germany at a — — — — very cheap rate. Besides occurring...Muriate of Potash, or Sylvine. Fontainebleau Sandstone. Natro- calcite, Plumbo-calcite. Strontiano-calcite...BrewsterAmethj'stotine, Cryptotine, &c. line, Red Sandstone. Flexible Sandstone. Silica, Noble or Precious Opal. ...Pimelite. Domeykite. Nickel Vitriol, or Pyrome- Cornwallite. Condurrite. line. Native Copper. Erinite...Chrysoprase, 8fc. : — — „ Amorphous „ Flint, Sandstone, Amorphous Silica Hydrous Silica Opal, Hyalite |
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