| The metal extraction by ore leaching (mostly copper) was about 1,000 years BC. known in the Mediterranean, but there are also barely no written records. The in the Middle Ages and in the following Renaissance well-known different procedures were first described in detail by Georg Agricola 1556 in hi ... moreThe metal extraction by ore leaching (mostly copper) was about 1,000 years BC. known in the Mediterranean, but there are also barely no written records. The in the Middle Ages and in the following Renaissance well-known different procedures were first described in detail by Georg Agricola 1556 in his book "De Re Metallica Libri XII". A contribution by Peter Seroka |
| ... Erst knapp 50 Jahre später liegen wieder Nachrichten vor, und zwar Abrechnungen aus den Jahren 1782 bis 1791. Die damaligen Pächter waren die Krettnicher Einwohner Nicolaus Wiesen, Matthias Finkler und Johann Bathis, Ersterer hatte in den 10 Jahren 346 Rtl., der zweite 95 Rtl. und der letzte 146 ... more... Erst knapp 50 Jahre später liegen wieder Nachrichten vor, und zwar Abrechnungen aus den Jahren 1782 bis 1791. Die damaligen Pächter waren die Krettnicher Einwohner Nicolaus Wiesen, Matthias Finkler und Johann Bathis, Ersterer hatte in den 10 Jahren 346 Rtl., der zweite 95 Rtl. und der letzte 146 Rtl. eingenommen. Hauptabnehmer waren Johannes Scherer in Scheuern, Pastor Anhäuser in Lockweiler, sowie Johannes Bördeler (Birtel) in Krettnich, die offenbar das abgenommene Erz auf eigene Rechnung weitervertrieben. Als Bergmann war damals Paul Jungblut ... Ein Bericht von Berthold Stein |
| Authors present new first records from all over the world. Everybody is invited to share information. ... moreAuthors present new first records from all over the world. Everybody is invited to share information. |
| We do not thumble stones to get smooth and even things that look like the tumbled stones in the esoteric shops, but to discover the secret of the stone. We have thumbled stones in the spirator for years and have documented our experiences with stones, machinery, abrasives and polishing techniques. O ... moreWe do not thumble stones to get smooth and even things that look like the tumbled stones in the esoteric shops, but to discover the secret of the stone. We have thumbled stones in the spirator for years and have documented our experiences with stones, machinery, abrasives and polishing techniques. Our experience will help you to avoid errors and run approach to the subject. |
| Nature forms over time, e.g. believed due to weathering, mineralization or crystallization, landscapes and rocks in which the human imagination identifies often strange formations out of the real world. An example of this are agates that, generally outwardly unattractive pose, in their interiors of ... moreNature forms over time, e.g. believed due to weathering, mineralization or crystallization, landscapes and rocks in which the human imagination identifies often strange formations out of the real world. An example of this are agates that, generally outwardly unattractive pose, in their interiors often true works of art. |