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  2. Rock (geology) - Wikipedia

    en.wikipedia.org/wiki/Rock_(geology)

    Most rocks contain silicate minerals, compounds that include silica tetrahedra in their crystal lattice, and account for about one-third of all known mineral species and about 95% of the earth's crust. [6] The proportion of silica in rocks and minerals is a major factor in determining their names and properties. [7]

  3. List of minerals - Wikipedia

    en.wikipedia.org/wiki/List_of_minerals

    This is a list of minerals which have Wikipedia articles. ... Anyolite (metamorphic rock - zoisite, ruby, and hornblende) Aquamarine (light blue variety of beryl)

  4. Mineral - Wikipedia

    en.wikipedia.org/wiki/Mineral

    Rocks can also be composed entirely of non-mineral material; coal is a sedimentary rock composed primarily of organically derived carbon. [32] [36] In rocks, some mineral species and groups are much more abundant than others; these are termed the rock-forming minerals.

  5. List of rock types - Wikipedia

    en.wikipedia.org/wiki/List_of_rock_types

    Phosphorite – Sedimentary rock containing large amounts of phosphate minerals – A non-detrital sedimentary rock that contains high amounts of phosphate minerals; Sandstone – Type of sedimentary rock; Shale – Fine-grained, clastic sedimentary rock; Siltstone – Sedimentary rock which has a grain size in the silt range

  6. Mineralogy - Wikipedia

    en.wikipedia.org/wiki/Mineralogy

    Mineralogy applies principles of chemistry, geology, physics and materials science to the study of minerals. Mineralogy [n 1] is a subject of geology specializing in the scientific study of the chemistry, crystal structure, and physical (including optical) properties of minerals and mineralized artifacts.

  7. Gone winter rockhounding in Washington state? You can find ...

    www.aol.com/gone-winter-rockhounding-washington...

    Washington state is a hotbed for minerals, gemstones, crystals and fossils, making the Evergreen state a popular site for rockhounding. Whether in an official group or going solo, rockhounding is ...

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