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  2. Mineralogy of the Pikes Peak Region - Wikipedia

    en.wikipedia.org/wiki/Mineralogy_of_the_Pikes...

    Scientists from around the world come to Colorado to study the minerals of this region. Because the granite covers a large portion of the Colorado Front Range, there are good mineral collecting areas scattered all over the Pikes Peak region. The collecting localities range from near Colorado Springs on the south to just west of Denver on the north.

  3. Entrada Sandstone - Wikipedia

    en.wikipedia.org/wiki/Entrada_Sandstone

    The Entrada Sandstone is a formation in the San Rafael Group found in the U.S. states of Wyoming, Colorado, northwest New Mexico, northeast Arizona, and southeast Utah. Part of the Colorado Plateau , this formation was deposited during the Jurassic Period sometime between 180 and 140 million years ago in various environments, including tidal ...

  4. Uranium mining in Colorado - Wikipedia

    en.wikipedia.org/wiki/Uranium_mining_in_Colorado

    The Mann mine, near Morrison, Colorado, produced 16,000 pounds (7.1 metric tons) of uranium oxide from 1955 to 1961. [30] The Mike Doyle mine in El Paso County produced 280 pounds (130 kg) of uranium oxide from Dakota sandstone in 1955. Also in 1955, a Dakota sandstone mine in Larimer County produced 8 pounds of uranium along with some vanadium ...

  5. Slick Rock, Colorado - Wikipedia

    en.wikipedia.org/wiki/Slick_Rock,_Colorado

    Slick Rock was originally known as Gladel. The Gladel post office opened in 1922, but closed in 1929. The Slick Rock post office opened in 1941, but has since closed. [3] [4] Slick Rock addresses are now served by the Egnar post office with the ZIP code 81325. [2]

  6. Pikes Peak granite - Wikipedia

    en.wikipedia.org/wiki/Pikes_Peak_granite

    Pikes Peak granite is a 1.08 billion year old Late-Precambrian geologic formation found in the central part of the Front Range of Colorado. It is a coarse-grained pink to light red syenogranite with minor gray monzogranite , and it has a distinctive brick-red appearance where it outcrops.

  7. Slickrock Trail - Wikipedia

    en.wikipedia.org/wiki/Slickrock_Trail

    The Slickrock Trail consists of three main sections: An out-and-back lead-in (akin to the stick of a lollipop or stem of a cherry), the main 6.8-mile (10.9 km) loop (akin to the fruit of a cherry or the candy part of a lollipop), and an optional 2.3-mile (3.7 km) practice trail (also called the practice loop, although it is not literally a loop) that begins and ends at separate points on the ...

  8. List of sandstones - Wikipedia

    en.wikipedia.org/wiki/List_of_sandstones

    Bollingen Sandstone (also Buchberg Sandstone, Uznaberg Sandstone, Bollinger-Lehholz Sandstone and Güntliweid Sandstone): Rapperswil-Jona by the Upper Lake Zürich Grès à cailloux roulés : near Avenches

  9. Itacolumite - Wikipedia

    en.wikipedia.org/wiki/Itacolumite

    It is the best and most widely known example of a flexible sandstone, and is a source of diamonds found in the Minas Gerais area of Brazil. [2] On the split faces of the slabs, scales of greenish mica are visible, but in other respects, the rock seems to be a remarkably pure specimen consisting of quartz. If a slab measuring 30-60 centimetres ...

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