Definitions

from The Century Dictionary.

  • noun A massive, clay-like mineral, of a white to green or gray color: it is so called from its property of taking grease out of cloth, etc.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Min.) A hydrous silicate of alumina, of a greenish color, which, in certain states of humidity, appears transparent and almost gelatinous.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun mineralogy Any of many clay phyllosilicate minerals that have a relatively open structure

Etymologies

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Examples

  • Pure glass has been found only at Beloc, Haiti, and extremely rare in the core of smectite spherules in Mimbral, Lajilla Mexico.

    Should Keller's Thin Sections Be Independently Tested? « Climate Audit 2006

  • For example, smectite clays have been found in SNC meteorites.

    The Case for Mars Robert Zubrin 1996

  • For example, smectite clays have been found in SNC meteorites.

    The Case for Mars Robert Zubrin 1996

  • As discussed earlier, Martian soils are known to contain smectite clays.

    The Case for Mars Robert Zubrin 1996

  • As discussed earlier, Martian soils are known to contain smectite clays.

    The Case for Mars Robert Zubrin 1996

  • The NHM study showed that in the dominant ferruginous siliceous ore type, which makes up three quarters of the resources, most of the nickel is hosted in the iron mineral goethite (which holds up to 5 wt% Ni), and in smectite clays (with up to 4 wt% Ni).

    Reuters: Press Release 2011

  • The swelling properties of smectite allows a certain degree of deformablity, allowing some 'healing' of the damaged zone

    Featured Articles Fitzgabbro 2010

  • Previous shallow drilling, 1.1 km to the north encountered kaolinite, smectite and localized chalcedony flooding typical of high level epithermal alteration that indicates the vein system may continue north but at a deeper level.

    Marketwire - Breaking News Releases 2010

  • Previous shallow drilling, 1.1 km to the north encountered kaolinite, smectite and localized chalcedony flooding typical of high level epithermal alteration that indicates the vein system may continue north but at a deeper level.

    Marketwire - Breaking News Releases 2010

  • Mineralogy - Bentonite is not itself a mineral name, but more correctly, it is a smectite clay composed primarily of the mineral Montmorillonite.

    Wil's Ebay E-Store amp;34;Nutrition 2010

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