| The term used in the plural "pyrites" has often been misused in the past or in common for marcasite, chalcopyrite, pyrrhotite and other yellow to brass-colored minerals. The word pyrite is derived from the Greek "pyrites lithos" (derived pyr = fire and lithos = stone) and describes a characteristic ... moreThe term used in the plural "pyrites" has often been misused in the past or in common for marcasite, chalcopyrite, pyrrhotite and other yellow to brass-colored minerals. The word pyrite is derived from the Greek "pyrites lithos" (derived pyr = fire and lithos = stone) and describes a characteristic of the mineral, when rubbing against steel or flint (flint) to generate sparks. In prehistoric tombs pyrite concretions and unrolled pyrite where found, which supposed to be used for lighting a fire. (Article in German) |
| Deposits are one of the most important topics in geology. Peter Seroka has addressed the issue in several years of work and has written an up-to-date geological summary. He dedicated his work to the 15 th anniversary of Mineralienatlas. The work gives detailed information regarding the origin of d ... moreDeposits are one of the most important topics in geology. Peter Seroka has addressed the issue in several years of work and has written an up-to-date geological summary. He dedicated his work to the 15 th anniversary of Mineralienatlas. The work gives detailed information regarding the origin of deposits, the different types of deposits and their classification. Examples of economically important deposits complete the chapters. Provided that this comprehensive work would be printed it would be a volume of over 400 pages; here it is provided in its entirety, online. Thanks to Peter Seroka. (written in german language). |
| Im Saarland ist der in Oberer, Mittlerer und Unterer Teil geteilte Buntsandstein, der frühesten Abteilung der Trias, nur mit den beiden jüngeren Stufen vertreten. Der Untere Buntsandstein ist nicht zu finden. In St. Arnual, am Ostabhang des Sonnenberges bei Saarbrücken, sind diese beiden Altersstufe ... moreIm Saarland ist der in Oberer, Mittlerer und Unterer Teil geteilte Buntsandstein, der frühesten Abteilung der Trias, nur mit den beiden jüngeren Stufen vertreten. Der Untere Buntsandstein ist nicht zu finden. In St. Arnual, am Ostabhang des Sonnenberges bei Saarbrücken, sind diese beiden Altersstufen eindrucksvoll aufgeschlossen. Folgt man den sogenannten Felsenwegen entlang der Saar, so erkennt man das Profil, einschließlich der Violetten Grenzzone, die die Trennung vom Mittleren zum Oberen Buntsandstein darstellt. |
| Who knows Tucson with its many satellite events, has already a good taste of the Sainte-Marie-aux-Mines show. Unlike in Munich where you find the stands clear and concentrated in halls, the organizers use single fenced-off parts of the city to place the stands on the streets. Public buildings such ... moreWho knows Tucson with its many satellite events, has already a good taste of the Sainte-Marie-aux-Mines show. Unlike in Munich where you find the stands clear and concentrated in halls, the organizers use single fenced-off parts of the city to place the stands on the streets. Public buildings such as swimming pool, school and theater are transformed into smaller exhibition halls... A small showreport by Stefan Schorn (in german) |
| This portrait explains the background to the most fascinating natural events on Earth, how are volcanoes build and what causes eruptions, lava flows and lahars. A rich picture book with some stunning shots invites you to dive into the fascinating world of magmatic phenomena. (Article in german) ... moreThis portrait explains the background to the most fascinating natural events on Earth, how are volcanoes build and what causes eruptions, lava flows and lahars. A rich picture book with some stunning shots invites you to dive into the fascinating world of magmatic phenomena. (Article in german) |