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  2. Corundum - Wikipedia

    en.wikipedia.org/wiki/Corundum

    Corundum is a crystalline form of aluminium oxide (Al 2 O 3) typically containing traces of iron, titanium, vanadium, and chromium. [ 3 ] [ 4 ] It is a rock -forming mineral . It is a naturally transparent material, but can have different colors depending on the presence of transition metal impurities in its crystalline structure. [ 7 ]

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

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

    A green metal used in smithing to craft Orcish weapons and armor in The Elder Scrolls V: Skyrim. In Maplestory it is a fuchsia metal used to craft armors and items. In Guild Wars 2, Orichalcum appears as an amber-colored metal used in crafting various things. In Shadowrun, orichalcum is a magical alloy of gold, silver, mercury, and copper. Also ...

  4. Emery (rock) - Wikipedia

    en.wikipedia.org/wiki/Emery_(rock)

    Emery is a granular rock used to make an abrasive powder. It largely consists of corundum (aluminium oxide), mixed with other minerals such as the iron-bearing spinels, hercynite, and magnetite, and also rutile . Industrial emery may contain a variety of other minerals and synthetic compounds such as magnesia, mullite, and silica.

  5. List of minerals - Wikipedia

    en.wikipedia.org/wiki/List_of_minerals

    Sapphire (gem corundum of any color except red, especially blue varieties) Sard (a variety of chalcedony/quartz) Satinspar (a variety of gypsum) Selenite (a variety of gypsum) Simetite (a variety of amber) Smoky quartz (a brown or black variety of quartz) Soda niter (synonym of nitratine) Spectrolite (a variety of labradorite) Spessartite ...

  6. Adamantine spar - Wikipedia

    en.wikipedia.org/wiki/Adamantine_Spar

    Adamantine spar is a silky brown variety of corundum. It has a hardness of 9 on the Mohs scale. [1] See also. Yogo sapphire; References This page was last edited ...

  7. Enderal - Wikipedia

    en.wikipedia.org/wiki/Enderal

    Enderal: The Shards of Order is a total conversion mod of Bethesda Softworks' The Elder Scrolls V: Skyrim developed by SureAI as a sequel to Nehrim: At Fate's Edge. [2] It was released in July 2016, [3] initially in German only. An English version was released August 16, 2016. [4] An expansion, Forgotten Stories, was released on February 14, 2019.

  8. Chromium(III) oxide - Wikipedia

    en.wikipedia.org/wiki/Chromium(III)_oxide

    3 has the corundum structure, consisting of a hexagonal close packed array of oxide anions with 2 ⁄ 3 of the octahedral holes occupied by chromium. Similar to corundum, Cr 2 O 3 is a hard, brittle material (Mohs hardness 8 to 8.5). [4] It is antiferromagnetic up to 307 K, the Néel temperature. [5] [6] It is not readily attacked by acids.

  9. Oxide mineral - Wikipedia

    en.wikipedia.org/wiki/Oxide_mineral

    Corundum Al 2 O 3; Hematite Fe 2 O 3; Ilmenite FeTiO 3; XO 2 form Rutile group Rutile TiO 2; Pyrolusite MnO 2; Cassiterite SnO 2; Baddeleyite ZrO 2; Uraninite UO 2; Thorianite ThO 2; XY 2 O 4 form Spinel group Spinel MgAl 2 O 4; Gahnite ZnAl 2 O 4; Magnetite Fe 3 O 4 (Fe 2+ Fe 3+ 2 O 4) Franklinite (Zn,Fe,Mn)(Fe,Mn) 2 O 4; Chromite FeCr 2 O 4 ...