† copperas-stonen.
Obsolete.
A former name of iron pyrites or Marcasite.
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the world > the earth > minerals > types of mineral > sulphides and related minerals > [noun] > marcasite or related minerals
marcasite?c1425
pyrites1567
marcasin1601
Jew's stone1617
copperas-stone1640
brass lump1675
spear pyrites1837
society > occupation and work > materials > raw material > gem or precious stone > marcasite > [noun]
marcasite?a1425
marcasin1601
Jew's stone1617
copperas-stone1640
1640 Orig. Jrnls. House of Commons 21 Nov. 20 163 The Patṭ concerninge Copris Stones.
1652 J. French York-shire Spaw vi. 58 Take Copperas stone, which is a certain Sulphurious glittering Marcasite.
1694 F. Slare in Philos. Trans. (Royal Soc.) 18 218 He was Master of a Copperas Work at Whitstable in Kent, and engrossed all the Pyrites or Copperas-stone.
1776 J. Seiferth tr. C. E. Gellert Metallurgic Chym. 497 Pyrites, or Copperas-stone.
This entry has not yet been fully updated (first published 1893; most recently modified version published online March 2021).
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n.1640- limit in
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