A soft reddish mineral consisting of arsenic sulphide, formerly used as a pigment and in fireworks.
- Orpiment is a lesser mineral associated with realgar and lead sulfosalts in dolomite at Binnental, Valais, Switzerland.
- It is an alteration product of realgar, native arsenic, and, less commonly, arsenopyrite.
- The next morning we drove west to the famous town of Shimen, the locality for all the superb realgar and orpiment crystals.
Late Middle English: via medieval Latin from Arabic rahj al-ġār 'arsenic', literally 'dust of the cave'.
Words that rhyme with realgaralga, Trafalgar
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