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USGS BEARPAW MOUNTAINS Montana GEOLOGY of LLOYD QUADRANGLE With Huge COLOR MAP!
USGS BEARPAW MOUNTAINS Montana GEOLOGY of LLOYD QUADRANGLE With Huge COLOR MAP!
USGS BEARPAW MOUNTAINS Montana GEOLOGY of LLOYD QUADRANGLE With Huge COLOR MAP!
USGS BEARPAW MOUNTAINS Montana GEOLOGY of LLOYD QUADRANGLE With Huge COLOR MAP!
USGS BEARPAW MOUNTAINS Montana GEOLOGY of LLOYD QUADRANGLE With Huge COLOR MAP!
USGS BEARPAW MOUNTAINS Montana GEOLOGY of LLOYD QUADRANGLE With Huge COLOR MAP!

USGS BEARPAW MOUNTAINS Montana GEOLOGY of LLOYD QUADRANGLE With Huge COLOR MAP!

$ 6.33

Availability: 100 in stock
  • Country/Region of Manufacture: United States
  • Restocking Fee: No
  • Return shipping will be paid by: Seller
  • Item must be returned within: 30 Days
  • Refund will be given as: Money Back
  • All returns accepted: Returns Accepted
  • Condition: Edge wear and fading around the edges and spine. Some corner and edge bumping. Minor wear-through of the cover at the top of the spine. Otherwise good. Pages yellowed. No internal marks. Map is very good.A good example of this old report.

    Description

    FEW LEFT!!!
    This is USGS Bulletin 1081-E,
    Geology of the Lloyd Quadrangle, Bearpaw Mountains, Blaine County, Montana
    . Published in 1961, this is a pretty scarce item. This publication documents the geology of this interesting area. It consists of the 30-page book and a huge full color geologic map covering about 200 square miles of mountainous country and some of the adjacent plains. This area has quite complex geology of faulted sedimentary rocks plus intrusive and volcanic igneous rocks. The igneous rocks are an odd mixture of alkalic rocks with weird names like shonkinite, syenite, porphyritic syenite, and latite. They are part of a large group of similar rocks, all introduced during the Eocene.
    Numerous prospects in the area were investigated for various metals. The text mentions some of the minerals found, including
    Argentiferous galena
    Pyrite
    Pyrrhotite
    Chalcopyrite
    Sphalerite
    Molybdenite
    Quartz
    Calcite
    Barite
    A mine called the O'Hanlon mine is mentioned, and the location is given with good precision.
    Some placer gold is also known in the area!
    The report covers the geology in great depth. Every formation is described completely, and the map has several nice cross sections on it that make the geology really come alive.
    See my other listings for other nearby reports on the Bearpaw mountains.
    Expert packing assured. The recent increase in postage rates was pretty big. As a result, Media Mail is now my default shipping method to keep shipping affordable.
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