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  2. List of minerals - Wikipedia

    en.wikipedia.org/wiki/List_of_minerals

    Amethyst crystals – a purple quartz Apophyllite crystals sitting right beside a cluster of peachy bowtie stilbite Aquamarine variety of beryl with tourmaline on orthoclase Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico Aurichalcite needles spraying out within a protected pocket lined by bladed calcite crystals Austinite from the Ojuela Mine, Mapimí, Durango, Mexico Ametrine ...

  3. List of chemical elements - Wikipedia

    en.wikipedia.org/wiki/List_of_chemical_elements

    118 chemical elements have been identified and named officially by IUPAC.A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z).

  4. Magnesium - Wikipedia

    en.wikipedia.org/wiki/Magnesium

    Chemical element with atomic number 12 (Mg) Magnesium, 12 Mg Magnesium Pronunciation / m æ ɡ ˈ n iː z i ə m / (mag- NEE -zee-əm) Appearance shiny grey solid Standard atomic weight A r °(Mg) [24.304, 24.307] 24.305 ± 0.002 (abridged) Magnesium in the periodic table Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus ...

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  6. Alchemical symbol - Wikipedia

    en.wikipedia.org/wiki/Alchemical_symbol

    The seven metals known since Classical times in Europe were associated with the seven classical planets; this figured heavily in alchemical symbolism. The exact correlation varied over time, and in early centuries bronze or electrum were sometimes found instead of mercury, or copper for Mars instead of iron; however, gold, silver, and lead had ...

  7. Category:Metals - Wikipedia

    en.wikipedia.org/wiki/Category:Metals

    This page lists metals, with subdivisions for alloys and specialised subsets of metal and metal-based compounds. Subcategories This category has the following 20 subcategories, out of 20 total.

  8. Template:List of oxidation states of the elements - Wikipedia

    en.wikipedia.org/wiki/Template:List_of_oxidation...

    This page was last edited on 20 November 2024, at 15:57 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  9. Manganese - Wikipedia

    en.wikipedia.org/wiki/Manganese

    [90] [91] But to this day, only K 2 SiF 6:Mn 4+ is commercially available for use in warm-white LEDs. [92] The metal is occasionally used in coins; until 2000, the only United States coin to use manganese was the "wartime" nickel from 1942 to 1945. [93] An alloy of 75% copper and 25% nickel was traditionally used for the production of nickel coins.

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