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  2. Verdigris - Wikipedia

    en.wikipedia.org/wiki/Verdigris

    The Statue of Liberty, showing advanced patination; verdigris is responsible for the statue's iconic green colour.. Verdigris (/ ˈ v ɜːr d ɪ ɡ r iː (s)/) [1] is a common name for any of a variety of somewhat toxic [2] [3] [4] copper salts of acetic acid, which range in colour from green to a bluish-green depending on their chemical composition.

  3. Patina - Wikipedia

    en.wikipedia.org/wiki/Patina

    The Statue of Liberty gets its famous green color from the natural patina formed on its copper surface. The green patina that forms naturally on copper and bronze, sometimes called verdigris, usually consists of varying mixtures of copper chlorides, sulfides, sulfates, and carbonates, depending upon environmental conditions such as sulfur ...

  4. Scheele's green - Wikipedia

    en.wikipedia.org/wiki/Scheele's_Green

    Scheele's green was invented in 1775 by Carl Wilhelm Scheele. [2] [3] By the end of the 19th century, it had virtually replaced the older green pigments based on copper carbonate. It is a yellowish-green pigment commonly used during the early to mid-19th century in paints as well as being directly incorporated into a variety of products as a ...

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  6. Green pigments - Wikipedia

    en.wikipedia.org/wiki/Green_pigments

    Emerald Green, also known as Paris Green, Scheele's Green, Schweinfurt green and Vienna Green, is a synthetic inorganic compound, made by a reaction of sodium arsenite with copper(II) acetate. While it makes a beautiful rich green, the color of the emerald stone, it is highly toxic , due to a main ingredient, arsenic . [ 17 ]

  7. List of U.S. state minerals, rocks, stones and gemstones

    en.wikipedia.org/wiki/List_of_U.S._state...

    West Virginia joined Kentucky and Utah, which also recognize coal as a state mineral or rock. The drive to name coal as an official state symbol was initiated by a high school student from Wharncliffe, West Virginia , who initiated her project at a school fair and collected 2,500 signatures on a petition that was submitted to legislators.

  8. Copper - Wikipedia

    en.wikipedia.org/wiki/Copper

    Copper used in buildings, usually for roofing, oxidizes to form a green patina of compounds called verdigris. Copper is sometimes used in decorative art , both in its elemental metal form and in compounds as pigments.

  9. List of copper salts - Wikipedia

    en.wikipedia.org/wiki/List_of_copper_salts

    Copper also has a range of different organic and inorganic salts, having varying oxidation states ranging from (0,I) to (III). These salts (mostly the (II) salts) are often blue to green in color, rather than the orange color copper is known for.