witherite

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]

* * *

      a carbonate mineral, barium carbonate (BaCO3), that is, with the exception of barite, the most common barium mineral, despite its rarity. It is ordinarily found in fairly pure form in association with barite and galena in low-temperature hydrothermal veins, as in the north of England and in Scotland. Because of its solubility in common acids, witherite is preferred to barite in the preparation of other barium compounds. It is also used in case-hardening steel and in refining sugar. For detailed physical properties, see carbonate mineral (table).

* * *


Universalium. 2010.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • 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,… …   Wikipedia

  • 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 — 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

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”