Salt, Armenian

NITRUM — is a kind of Salt. It is also Borax, and one kind of Armenian Salt — black, red, or sapphire. 

The second book is devoted to what he calls the minor minerals, under which he includes mercury and its ores, sulphur, antimony, marcasites containing metals, vitriol, alum, arsenic, orpiment, and realgar, common salt and other salts, calamine, zaffre, ocher, Armenian bole, emery, borax, lapis lazuli, rock crystal and glass. 

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