Witherite

Witherite

Witherite is a barium carbonate mineral, BaCO3, in the aragonite group. [http://www.mindat.org/min-4299.html Witherite] mindat.org] Witherite crystallizes in the orthorhombic system and virtually always is twinned. The mineral is colorless, milky white, grey, pale yellow, green, to pale brown. The specific gravity is 4.3, which is high for a non-metallic mineral. It fluoresces light blue under both long and short-wave UV and is phosphorescent under short-wave UV light. [http://mineral.galleries.com/minerals/carbonat/witherit/witherit.htm The Mineral Witherite] Mineral Galleries]

Witherite forms in low temperature hydrothermal environments. It is commonly associated with fluorite, celestine, galena, barite, calcite and aragonite. Witherite occurrences include: Cave-in-Rock, Illinois, USA; Alston Moor, Anglezarke, Cumberland and Durham, England; Thunder Bay area, Ontario, Canada and Germany.

Witherite was named for William Withering (1741-1799) an English physician and naturalist. [http://webmineral.com/data/Witherite.shtml General Witherite Information] Webmineral.com]

ee also

*List of minerals
*List of minerals named after people

References


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Look at other dictionaries:

  • Witherite — Withérite Withérite Général No CAS 513 77 9 No EINECS …   Wikipédia en Français

  • Withérite — Catégorie V : carbonates et nitrates[1] Withérite d’Angleterre …   Wikipédia en Français

  • withérite — ● withérite nom féminin (de W. Withering, nom propre) Carbonate naturel de baryum BaCO3, orthorhombique. withérite [witeʀit] n. f. ÉTYM. 1839, Boiste; d après le nom de W. Withering, qui décrivit ce minéral en 1784, et suff. ite. ❖ ♦ Chim.… …   Encyclopédie Universelle

  • Witherite — With er*ite, n. [So called after Dr. W. Withering.] (Min.) Barium carbonate occurring in white or gray six sided twin crystals, and also in columnar or granular masses. [1913 Webster] …   The Collaborative International Dictionary of English

  • witherite — [with′ər īt΄] n. [Ger witherit, after W. Withering (1741 99), Eng scientist] a semihard, light colored, orthorhombic mineral, BaCO3, an ore of barium; barium carbonate …   English World dictionary

  • witherite — /widh euh ruyt /, n. a white to grayish mineral, barium carbonate, BaCO3, occurring in crystals and masses: a minor ore of barium. [1785 95; named after W. Withering (1741 99), who first described it; see ITE1] * * * ▪ mineral       a carbonate… …   Universalium

  • witherite — viteritas statusas T sritis chemija apibrėžtis Mineralas. formulė BaCO₃ atitikmenys: angl. witherite rus. витерит …   Chemijos terminų aiškinamasis žodynas

  • witherite — noun Etymology: German Witherit, irregular from William Withering died 1799 English physician Date: 1794 a translucent white or gray orthorhombic mineral consisting of a carbonate of barium …   New Collegiate Dictionary

  • witherite — noun A yellow grey mineral form of barium carbonate, BaCO …   Wiktionary

  • witherite — with·er·ite …   English syllables

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