Brunswick Green is a pigment used in the arts, the composition of which is very variable. The native varieties sometimes consist of carbonates of copper, but the artificial compounds frequently contain arsenite of copper, Prussian blue, indigo, or chrome yellow. A superior product is obtained by the action of sal-ammoniac on copper filings, an oxychloride of copper being produced identical with the mineral Atacamite (q.v.).
Brunswick Green
Chambers's Encyclopaedia, Volume 2: Beaugency to Cataract, p. 501
Source scan(s): p. 0512