natroliten.
/ˈnatrəlʌɪt/, /ˈneɪtrəlʌɪt/, U.S. /ˈneɪtroʊˌlaɪt/ Mineralogy.
The principal member of the zeolite group of minerals, which usually occurs as slender crystals or fibrous masses and is used in water softeners.Natrolite is a hydrous silicate of aluminium and sodium, Na2Al2Si3O10·2H2O. Crystal system: orthorhombic.
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the world > the earth > minerals > types of mineral > silicates > tectosilicate > [noun] > feldspathoid > zeolite > natrolite
needle zeolite1805
bergmannite1811
natrolite1811
galactite1832
brevicite1836
savite1852
1805 R. Jameson Syst. Mineral. II. 542 Klaproth..gave it the name Natrolit, on account of the great quantity of natron which he found it to contain.]
1811 Philos. Trans. (Royal Soc.) 101 171 The natrolite has been lately met with under a regular crystalline form.
1850 J. D. Dana U.S. Exploring Exped.: Geol. iv. 298 The basalt..contains minute cavities which are filled, apparently, with natrolite.
1879 F. Rutley Study of Rocks x. 159 A meshwork of little prisms of natrolite, in some instances, almost completely filling the crystal.
1929 W. F. Foshag in G. P. Merrill Minerals from Earth & Sky ii. iv. 253 Benitoite occurs in veins of natrolite which traverse a glaucophane rock.
1957 H. S. Zim & P. R. Shaffer Rocks & Minerals 102 Natrolite forms slender, prismatic needle-like crystals.
1973 Nature 2 Mar. 27/1 The Upper Pillow Lavas are characterized by the presence of the zeolites, natrolite and gmelinite, which are unique to this division.
2000 Amer. Mineral. 85 1808 The structure has the basic natrolite Si–Al–O framework configuration with Na, Ca, Sr, and K residing within inter-framework cages.
This entry has been updated (OED Third Edition, June 2003; most recently modified version published online March 2022).
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