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  2. Silicification - Wikipedia

    en.wikipedia.org/wiki/Silicification

    In geology, silicification is a petrification process in which silica-rich fluids seep into the voids of Earth materials, e.g., rocks, wood, bones, shells, and replace the original materials with silica (SiO 2). Silica is a naturally existing and abundant compound found in organic and inorganic materials, including Earth's crust and mantle ...

  3. Silicon dioxide - Wikipedia

    en.wikipedia.org/wiki/Silicon_dioxide

    Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula SiO 2, commonly found in nature as quartz. [5] [6] In many parts of the world, silica is the major constituent of sand. Silica is one of the most complex and abundant families of materials, existing as a compound of several minerals and as a

  4. Asbestos - Wikipedia

    en.wikipedia.org/wiki/Asbestos

    Asbestos (/ æ s ˈ b ɛ s t ə s, æ z-,-t ɒ s / ass-BES-təs, az-, -⁠toss) [1] is a group of naturally occurring, toxic, carcinogenic and fibrous silicate minerals.There are six types, all of which are composed of long and thin fibrous crystals, each fibre (particulate with length substantially greater than width) [2] being composed of many microscopic "fibrils" that can be released into ...

  5. Silicate mineral - Wikipedia

    en.wikipedia.org/wiki/Silicate_mineral

    In mineralogy, silica (silicon dioxide, SiO 2) is usually considered a silicate mineral rather than an oxide mineral. Silica is found in nature as the mineral quartz , and its polymorphs . On Earth, a wide variety of silicate minerals occur in an even wider range of combinations as a result of the processes that have been forming and re-working ...

  6. Silica gel - Wikipedia

    en.wikipedia.org/wiki/Silica_gel

    Colloidal silica gel with light opalescence. Silica gel is an amorphous and porous form of silicon dioxide (silica), consisting of an irregular tridimensional framework of alternating silicon and oxygen atoms with nanometer-scale voids and pores. The voids may contain water or some other liquids, or may be filled by gas or vacuum.

  7. Biogenic silica - Wikipedia

    en.wikipedia.org/wiki/Biogenic_silica

    Biogenic silica (bSi), also referred to as opal, biogenic opal, or amorphous opaline silica, forms one of the most widespread biogenic minerals. For example, microscopic particles of silica called phytoliths can be found in grasses and other plants. Silica is an amorphous metalloid oxide formed by complex inorganic polymerization processes.

  8. People are eating borax. Why? Here's what experts say ... - AOL

    www.aol.com/lifestyle/people-eating-borax-why...

    People are ingesting borax. Also known by its chemical name sodium borate decahydrate, borax is a salt typically used to kill ants and boost laundry detergent, among other household cleaning needs ...

  9. Silicate - Wikipedia

    en.wikipedia.org/wiki/Silicate

    At very high pressure, such as exists in the majority of the Earth's rock, even SiO 2 adopts the six-coordinated octahedral geometry in the mineral stishovite, a dense polymorph of silica found in the lower mantle of the Earth and also formed by shock during meteorite impacts.