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Words, grammatical forms and meanings linked to the ontology.

specular iron en · NOUN

Meanings

  1. Iron ore that contains a small amount of sulfur and which appears to have shiny or reflective facets.
    • Woollen cloth is strongly vitreous with zinc and bismuth, moderately so with silver, copper, lead, and specular iron. 1821, Andrew Ure, Robert Hare, Franklin Bache, A Dictionary of Chemistry:
    • The whole variety is in close connection with the micaceous specular iron, between which and the crystallized oxide of iron is an uninterrupted transition. 1854, Frederick Overman, The manufacture of iron, in all its various branches, page 20:
    • This species includes the old species, specular iron and red iron ore, which are identical in chemical composition, and differ only in the state of aggregation of the particles. Specular iron includes the varieties of a perfect metallic lustre; if the structure is micaceous, it is the micaceous specular iron. 1850, James Dwight Dana, A System of Mineralogy: