-40%
USGS SOUTH DAKOTA BEECHER BLACK DIAMOND Mine Vintage 1963 with LARGE MAP!
USGS SOUTH DAKOTA BEECHER BLACK DIAMOND Mine Vintage 1963 with LARGE MAP!
USGS SOUTH DAKOTA BEECHER BLACK DIAMOND Mine Vintage 1963 with LARGE MAP!
USGS SOUTH DAKOTA BEECHER BLACK DIAMOND Mine Vintage 1963 with LARGE MAP!

USGS SOUTH DAKOTA BEECHER BLACK DIAMOND Mine Vintage 1963 with LARGE MAP!

$ 6.33

Availability: 100 in stock
  • All returns accepted: Returns Accepted
  • Restocking Fee: No
  • Refund will be given as: Money Back
  • Return shipping will be paid by: Seller
  • Condition: There is little wear other than edge-wear to the cover and pages and slight wrinkling of page corners and the cover, and some fading and discoloration of a minor nature.
  • Country/Region of Manufacture: United States
  • Item must be returned within: 30 Days

    Description

    NOT MANY LEFT!!!
    This is a scarce South Dakota pegmatite publication,
    Diamond-drilling Exploration of the Beecher No. 3-Black Diamond Pegmatite, Custer County, South Dakota
    . This is USGS Bulletin 1162-E. Published in 1963, there can't be many of these around. This is another of the mineralogically significant pegmatites of this famous area. It sports a pretty good list of desirable minerals, including:
    Albite
    Amblygonite
    Andalusite
    Beryl
    Cassiterite
    Columbite-Tantalite
    Elbaite
    Fluorapatite
    Lepidolite
    Microcline
    Muscovite
    Pyrrhotite
    Quartz
    Schorl
    Spodumene,
    variety: Kunzite
    Staurolite
    This publication consists of the 11-page book and the original huge 25x50 inch map showing the structure of the pegmatite, its location, and numerous cross-section interpreted from the diamond-drilling project. The text describes the zonation of the deposit, the occurrence of beryl and spodumene within it, and the structure of the pegmatite at depth. The structure is fairly complex and is quite interesting, as the detailed cross-sections make clear. All in all a scarce a desirable addition to any library on pegmatites or Black Hills mineralogy.
    I will continue to add new items to my store, so check back periodically.
    Expert Packing Assured.
    ®
    ROCKWILER