soap-rockn.
Mineralogy.
Steatite; magnesian clay.
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society > occupation and work > materials > raw material > mineral material > [noun] > talc or steatite
Venetian earth1660
soap-stone1681
soap-earth1696
Venetian talca1728
soap-rock1746
steatite1758
lapis ollaris1794
lardite1794
ollite1811
Venetian chalk1839
Venice talc1867
French chalk1882
the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [noun] > talc > steatite
Venetian earth1660
soap-stone1681
soap-earth1696
Venetian talca1728
soap-rock1746
steatite1758
lapis ollaris1794
lardite1794
ollite1811
Venetian chalk1839
Venice talc1867
1746 J. Hill tr. Theophrastus Περι τον ΛιΘον Βιβλιον (1774) 242 The Steatites of the Soap Rock of Cornwall.
1758 W. Borlase Nat. Hist. Cornwall 66 The most curious of all our clays in Cornwall, is the steatites near the Lizherd, generally called the Soap-rock.
1815 J. Smith Panorama Sci. & Art II. 465 Steatites, or soap-rock, is generally of a greenish colour.
1825 ‘J. Nicholson’ Operative Mechanic 456 The magnesia has obtained the name of soap-rock, and a marked variety of it steatite.
This entry has not yet been fully updated (first published 1913; most recently modified version published online September 2021).
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n.1746