Point IX

Gold may be separated by fusion from every addition of Copper, Tin, Iron, Lead, Orpiment, Antimony, Arsenick, or the like, without Cupels, each being kept apart.

This manner of separating of Metals, from one another, and of depurating ☉ without Cupels, is a most pleasing, fair, and profitable secret, by which in the separation of Metals, much time and expence is saved, and no detriment to be feared, which no man, even to this day could effect, my self excepted: You are to proceed in this manner. First, the mixt Metal, whether it consist of few or many, is to be granulated, the grains are to be conjoined with a fourth part of powdered Sulphur, somewhat moistened, and to be set on fire in a Crucible luted according to art, which being done, the cover of the Crucible is to be taken off, and the enkindled Metal to be covered with the fourth part of its weight of Antimony. NB. That if there be much ♂pper], or ♃ in the mixture, then the more Antimony is to be adjoined, that it may draw to it self the imperfect Metals. Therefore when the Mass flows with the Antimony, inject a little well purified Nitre, dried and pulverized, and when it flows well, the Mass is to be poured out into a Cone, and the Regulus, if there be any, to be shaken out, which will contain the greatest part of the ☉ which was in that Mass. NB. If there shall be no Regulus, that is a sign that there was not Nitre enough to suffice the crudity, which is to be remedied thus: Return the Mass into the Crucible, and permit it to flow, which being done, throw in as much filings of Iron, as you judge there is Gold in the Mass, and mix it with the Mass with a red hot Iron, cover the Crucible, and give a melting fire for a quarter of an hour, pour it into a Cone, when it is cold separate the Regulus from the Scoria, which will be about the same weight with the filings of Iron, which you used in the precipitation, purifie the Regulus in a small new Crucible, by the injection of Nitre, if it yieldeth Gold without Silver, then it is a sign there is Gold yet in the Mass, therefore it is necessary to flux the Mass again, and precipitate with Iron, if the Regulus be yet golden, then it is to be depurated apart by Nitre, and to be kept; but if it hath more ☽ than ☉, it is a sign that all the Gold is precipitated, afterwards suffer the Mass to flow again, and inject as much filings of Iron, stirring them well with the Mass, with a red hot iron, permit them to flow well together, then it rendereth as much Regulus of Silver, as there was Iron put in, afterwards also the ♀ will be precipitated, and last of all, the Scoria are again to be fluxed well being mixed with Nitre, that it may appear whether there be yet any Metal in them. The Regulus of ☽ is also depurated in the same manner as the Regulus of ☉: Venus, ♃, and other Additaments, are melted by Bellows, so that nothing is lost. This separation of ☉ and ☽ from the viler Metals, by melting, hath been long sought by many, but found by few. Lazarus Erker, in his Writings hath taught by what means ☉ may be separated from ☽ by fusion, but that separation is unlike to this which I have mentioned, because here it is not only shewed how ☉ may be separated from ☽, but also from other Metals.