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  2. Kimberlite - Wikipedia

    en.wikipedia.org/wiki/Kimberlite

    False-color scanning electron microscope image of kimberlite from South Africa. Olivine crystals (green) are in a fine-grained matrix made up of clay minerals and carbonates (presented in blue, purple and buff colors). Kimberlite is an igneous rock and a rare variant of peridotite. It is most commonly known to be the main host matrix for diamonds.

  3. Volcanic pipe - Wikipedia

    en.wikipedia.org/wiki/Volcanic_pipe

    Lamproite pipes operate similarly to kimberlite pipes, except that the boiling water and volatile compounds contained in the magma act corrosively on the overlying rock, resulting in a broader cone of eviscerated rock (the ejection of this rock also forms a tuff ring, like kimberlite eruptions). This broad cone is then filled with volcanic ash ...

  4. Kimberlite tailings - Wikipedia

    en.wikipedia.org/wiki/Kimberlite_tailings

    Kimberlite tailings are waste materials left after the recovery of diamond from diamond source rock. The material has a particle size ranging from 20 mm to 75 micrometres and can be categorized as a soft aggregate. It contains mainly silica, alumina, iron oxide, and magnesia. [1]

  5. List of rock types - Wikipedia

    en.wikipedia.org/wiki/List_of_rock_types

    Kimberlite – Igneous rock which sometimes contains diamonds; Komatiite – Magnesium-rich igneous rock; Lamproite – Mantle rock expulsed to the surface in volcanic pipes; Lamprophyre – Type of ultrapotassic igneous rock – An ultramafic, ultrapotassic intrusive rock dominated by mafic phenocrysts in a feldspar groundmass

  6. Northern Alberta kimberlite province - Wikipedia

    en.wikipedia.org/wiki/Northern_Alberta...

    The volcanic rocks of the BHH and BM fields are classified as kimberlites. The ML rocks are not considered to be archetypal kimberilte and have been variously classified as alkaline ultramafic rocks, hybrid alkaline ultramafic rocks, alkali olivine basalt and basanite ; they are difficult to classify because of strong clay alteration that has ...

  7. Lake Ellen Kimberlite - Wikipedia

    en.wikipedia.org/wiki/Lake_Ellen_Kimberlite

    The lake Ellen Kimberlite is popular with rock hounds as the classic indicator minerals (pyrope, magnesian ilmenite and chrome diopside) for kimberlite are easily found in the material, though few are of gem quality and size. While there was considerable interest in diamond exploration in Michigan's Upper Peninsula and northern Wisconsin for ...

  8. Alice Cooper, 76, Says Rockstar Life No Longer Means Drugs ...

    www.aol.com/alice-cooper-76-says-rockstar...

    Cooper says "rock ‘n’ roll is more of an attitude" — and no one has ever called him a "wimp" for not drinking. No one rocks quite like Alice Cooper. But as the shock rock icon, 76, tells ...

  9. Elliott County Kimberlite - Wikipedia

    en.wikipedia.org/wiki/Elliott_County_Kimberlite

    The rock is a dark-green peridotite (kimberlite) composed of serpentinized olivine and a number of accessory minerals, including phlogopite, pyrope, calcite, enstatite, magnesian ilmenite, and others. Xenoliths, mainly of shale, and igneous rock inclusions are abundant in the three intrusive bodies as described by William Brown in 1977. [1]

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