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  2. List of mineral symbols - Wikipedia

    en.wikipedia.org/wiki/List_of_mineral_symbols

    Mineral symbols (text abbreviations) are used to abbreviate mineral groups, subgroups, and species, just as lettered symbols are used for the chemical elements. The first set of commonly used mineral symbols was published in 1983 and covered the common rock-forming minerals using 192 two- or three-lettered symbols. [ 1 ]

  3. List of minerals recognized by the International ...

    en.wikipedia.org/wiki/List_of_minerals...

    The 'IMA database of mineral properties' (rruff.info/ima) has 173 species with 'not an IMA approved mineral' tag, some are an intermediate member of a solid solution series, others are "recently" discredited minerals. [4] I – intermediate member of a solid-solution series. H – hypothetical mineral (synthetic, anthropogenic, etc.)

  4. Scheelite - Wikipedia

    en.wikipedia.org/wiki/Scheelite

    Scheelite is a calcium tungstate mineral with the chemical formula Ca W O 4. It is an important ore of tungsten (wolfram). Scheelite is originally named after Swedish chemist Carl Wilhelm Scheele (1742–1786). Well-formed crystals are sought by collectors and are occasionally fashioned into gemstones when suitably free of flaws.

  5. List of fictional elements, materials, isotopes and subatomic ...

    en.wikipedia.org/wiki/List_of_fictional_elements...

    It emits toxic radiation and can impede superhuman healing factors. Carbon Silicate Lace The Expanse: A material derived from alien Protomolecule, used as hull protective plating for ships. The Rocinante was one such ship upgraded to use the material, whilst other ships were constructed with it as an original part of the hull.

  6. Opal - Wikipedia

    en.wikipedia.org/wiki/Opal

    Main opal producing countries. Opal is a hydrated amorphous form of silica (SiO 2 ·nH 2 O); its water content may range from 3% to 21% by weight, but is usually between 6% and 10%.

  7. Yingjiangite - Wikipedia

    en.wikipedia.org/wiki/Yingjiangite

    Yingjiangite is a mineral named after its type locality in the Yingjiang county in 1990. It is a member of the phosphuranylite group, although the species was doubted by two geologists. It is easily confused with phosphuranylite, though the two geologists ( José Moacyr Vianna Coutinho and Daniel Atencio ) claim that the mineral might be ...

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  9. Formation evaluation gamma ray - Wikipedia

    en.wikipedia.org/wiki/Formation_evaluation_gamma_ray

    Thorium 232 Th with half-life of 1.4 x 10 10 years, which emits 7 α, 5 β, and numerous γ-ray with different energies; Uranium 238 U with half-life of 4.4 x 10 9 years, which emits 8 α, 6 β, and numerous γ-ray with different energies; Each of these elements emits gamma-rays with distinctive energy.