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A white, yellow, or gray mineral, chiefly BaCO3.

[German Witherit, after William Withering (1741-1799), British physician.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Minerals) a white, grey, or yellowish mineral consisting of barium carbonate in orthorhombic crystalline form: occurs in veins of lead ore. Formula: BaCO3
[C18: named after W. Withering (1741–99), English scientist, who first described it]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈwɪð əˌraɪt)

a white to grayish mineral, barium carbonate, BaCO3, occurring in crystals and masses.
[1785–95; after W. Withering (1741–99), who first described it; see -ite1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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Kohler, "Nucleation and crystallization of otavite, witherite, calcite, strontianite, hydrozincite and hydrocerussite by C[O.sub.2] membrane diffusion technique," Chemical Geology, vol.
For example, in Chapter 8, which is listed under Part 3, Elizabeth Witherite describes in detail how her passion for social justice has helped her formulate research questions, which eventually lead to her M.A.
Mostyn and two heavy-hitter trial lawyers, Amy Witherite of Dallas and Kurt Arnold of Houston, have formed a new group called the Texas Association of Consumer Lawyers.
It occurs in the minerals barite and witherite. Barium content in Buriganga river sediment ranges from 410.9 to 563.8 [micro]g [g.sup.-1] with an average of 493.2 [micro]g [g.sup.-1] which is lower than that of average shale and continental upper crust values.
Take, for instance, the mineral witherite, a barium carbonate uncommon elsewhere in the world: mines near Hexham produced hundreds of thousands of tons of this mineral alone.
In general, the sources of barium in groundwater can be barium-rich feldspars, plagioclases, micas, apatite, baryte, barium-carbonate minerals of the aragonite group, such as witherite and alstonite (= bromlite, barytocalcite), barium rare-earth uranium carbonates, etc.
For long periods the only commercial source of the mineral witherite, used to make barium chemicals for use in glass, paint, cement and steel-hardening was Settlingstones Mine in Northumberland.
Other carbonates, i.e., ankerite, siderite, witherite, strontianite, may form if the respective metal cations are available.
Barium carbonate (BaCO3), also known as witherite, is a chemical compound used in used in the production of television glass, glazes, enamel, ceramics and electroceramics, rat poison, bricks, and cement.
Sara Witherite, RR 1 Box 684CC, Osceola Mills, PA 16666.
7 Art Miami staff member Lisa Witherite with Director liana Vardy