speculum metal Definition

bell metal, dutch metal, sterrometal, similor, britannia metal, oroide, stannite, putty powder, aerugo, albata, alfenide, tombac, acierage, type metal, babbitt metal, minargent, submetallic, terneplate, biddery ware, muntz metal, metallochrome, manganin, metallochromy, cupreous, hematinon, tula metal, copper, stannine, noble metal, nickel steel, quartation, argyrodite, mannheim gold, aerose, colcothar, alloyage, polybasite, caracoly, aluminium bronze, bessemer steel, stromeyerite, platinoid, zincoid, eruginous, aurichalcite, eucairite, red brass, eliquation, liquation, chalcanthite, niccolite, daniell cell, condurrite, cupriferous, boulangerite, skutterudite, acierate, garnierite, melaconite, chalcography, nickeline, metalliform, smaltite, zincify, freieslebenite, proustite, warwickite, tutenag, gahnite, metal, inoxidizable, liroconite, aluminiferous, germanite, lazulite, volborthite, cerargyrite, austenitic steel, zincification, venturine, magnalium, cyanide process, olivenite, schreibersite, zincograph, horn silver, tennantite, ancony, cubanite, alloy, bournonite, aciculite, ferreous, platiniridium, pyritology, miargyrite, libethenite, ehlite, caseharden, zinciferous,