File:De Re Metallica 1556 p 363 AQ22 (2).TIF
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Summary
| Author |
Agricola, Georg, 1494-1555 |
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| Description |
English: Page 363 from De re metallica libri XII quibus officia, instrumenta, machinae, ac omnia denique ad metallicam spectantia, non modo luculentissimè describuntur, sed et per effigies, suis locis insertas, adjunctis Latinis Germanicisq́[ue] appellationibus, ita ob oculos ponuntur, ut clariùs tradi non possint ; ejusdem De animantibus subterraneis liber, ab autore recognitus ; cum indicibus diversis ... / Georgii Agricolae, Kempnicensis, medici ac philosophi clariss[imi]. by Georgii Agricolae. Basileae Helvet. : Sumptibus itemq́ue typis chalcographicis Ludovici Regis, anno 1621.
Separation of gold and silver by sulfur Since acid was expensive to produce, for low-grade alloy Agricola outlined a method in which the alloy is granulated, combined with sulfur, and heated at a low temperature. Much of the silver reacts to form silver sulfide, leaving behind a more concentrated alloy, which can then be separated using the acid process. |
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| Date | 1621 | ||||||||||||||||||||
| Collection |
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| Accession number |
TN617 .A475 1621, Library collections, Science History Institute. |
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| Notes | Image downloaded with permission from the Science History Institute, as part of the Wikipedian in Residence initiative. | ||||||||||||||||||||
| Source/Photographer | Science History Institute | ||||||||||||||||||||
| Permission (Reusing this file) |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 15:38, 24 June 2013 | 3,744 × 5,616, 2 pages (60.33 MB) | Mary Mark Ockerbloom | {{Information |Description ={{en|1=Page 363 from ''De re metallica libri XII. quibus officia, instrumenta, machinae, ac omnia deni ad metallicam spectantia, non modo luculentissimè describuntur, sed et per effigies, suis locis... |
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