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Thursday, November 21st, 2024
the Week of Proper 28 / Ordinary 33
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Bible Encyclopedias
Colcothar

1911 Encyclopedia Britannica

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(adapted in Romanic languages from Arabic golgotar, which was probably a corruption of the Gr. x ucaveos, from xaXxbs, copper, iiveos, flower, i.e. copper sulphate), a name given to the brownish-red ferric oxide formed in the preparation of fuming sulphuric (Nordhausen) acid by distilling ferrous sulphate. It is used as a polishing powder, forming the rouge of jewellers, and as the pigment Indian red. It is also known as Crocus Martis.

Bibliography Information
Chisholm, Hugh, General Editor. Entry for 'Colcothar'. 1911 Encyclopedia Britanica. https://www.studylight.org/​encyclopedias/​eng/​bri/​c/colcothar.html. 1910.
 
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