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05. Apr. - Ta­tort Franken – Das stein­erne Grab der Rie­sen­lurche
10. Apr. - Min­er­alien­börse im Lausitz-Cen­ter in Hoy­er­sw­er­da
11. Apr. - Min­er­alien­börse im Lausitz-Cen­ter in Hoy­er­sw­er­da
11. Apr. - 23. Min­er­alien-IN­FO im Ahrn­tal - Südtirol
11. Apr. - Min­er­alien.- und Fos­silien­börse Rosen­heim - Auer Fes­thalle
12. Apr. - 31. Min­er­alien- und Fos­silien­samm­ler­börse Eg­gen­burg / AT
12. Apr. - Min­er­alien­börse Her­born-Merken­bach
17. Apr. - GERA: Bild­vor­trag „Der Ein­fluss Preußens auf den Berg­bau im
19. Apr. - 25. Bay­er­wald-Min­er­alien­börse Bad Kötzt­ing, DE
26. Apr. - 34. Min­er­alien- und Fos­silien­börse Arns­berg-Müschede, DE
09. May - 77. In­ter­na­tio­nale Min­er­alien­börse in Freiberg/Sach­sen
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Deutschland/Nordrhein-Westfalen/Arnsberg, Bezirk/Hochsauerlandkreis/Arnsberg/Holzen
 
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05. Apr. - Ta­tort Franken – Das stein­erne Grab der Rie­sen­lurche
10. Apr. - Min­er­alien­börse im Lausitz-Cen­ter in Hoy­er­sw­er­da
11. Apr. - Min­er­alien­börse im Lausitz-Cen­ter in Hoy­er­sw­er­da
11. Apr. - 23. Min­er­alien-IN­FO im Ahrn­tal - Südtirol
11. Apr. - Min­er­alien.- und Fos­silien­börse Rosen­heim - Auer Fes­thalle
12. Apr. - 31. Min­er­alien- und Fos­silien­samm­ler­börse Eg­gen­burg / AT
12. Apr. - Min­er­alien­börse Her­born-Merken­bach
17. Apr. - GERA: Bild­vor­trag „Der Ein­fluss Preußens auf den Berg­bau im
19. Apr. - 25. Bay­er­wald-Min­er­alien­börse Bad Kötzt­ing, DE
26. Apr. - 34. Min­er­alien- und Fos­silien­börse Arns­berg-Müschede, DE
09. May - 77. In­ter­na­tio­nale Min­er­alien­börse in Freiberg/Sach­sen
09. May - 50. Min­er­alien- & Fos­silien­börse “MIN­ER­AN­T2026” - Gol­d­en
09. May - 43. Aschaf­fen­burg­er Min­er­alien­börse
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Edelsteintage Konstanz
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Mineralienatlas (name for mineral atlas) is the platform for people interested in mineralogy, geology, palaeontology and mining since 2001. We operate a significant database for minerals, fossils, rocks and their localities. Mineralienatlas is not limited to a section. We bring together information and inform comprehensive.

To complete our information constantly, we need your support. With us, everyone can and should participate. Currently Mineralienatlas is used and expanded by 10531 members. Every month hundreds of thousands of visitors use our website as an information source.
 
Geolitho Foundation non-profit GmbH
Geolitho Foundation non-profit GmbH is the non-profit supporter of the Mineral Atlas (Mineralienatlas), the Lithotheque, the Geolitho Collection Management and the Marketplace and Store by collectors for collectors. The Foundation promotes public education in the field of mineralogy, geology, paleontology and mining by operating, maintaining and further expanding earth science projects.
 
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ZincIin 1546 Georgius Agricola reported about a white metal which is fused to the Rammelsberg lead and silver melter and that you could scrape off. He called this metal "contrefey", because it could imitate gold. Agricola did not recognize that this metal was zinc. He further observed that a similar metal, which he named from some unknown reasons "ZINCUM" arose under similar circumstances in Silesia during smelting.
Iin 1546 Ge­orgius Agri­co­la re­port­ed about a white me­t­al which is fused to the Ram­mels­berg lead and sil­ver mel­ter and that you could scrape off. He called this me­t­al "con­tre­fey", be­cause it could im­i­tate gold. Agri­co­la did not rec­og­nize that this me­t­al was zinc. He fur­ther ob­served that a sim­i­lar met ... moreIin 1546 Georgius Agricola reported about a white metal which is fused to the Rammelsberg lead and silver melter and that you could scrape off. He called this metal "contrefey", because it could imitate gold. Agricola did not recognize that this metal was zinc. He further observed that a similar metal, which he named from some unknown reasons "ZINCUM" arose under similar circumstances in Silesia during smelting.
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Bad Freien­walde - Ton­grubenDiese Lokalität ist nach Rüdersdorf wohl der ergiebigste Fundort in Brandenburg. Wobei die Anzahl der Mineralarten die von Rüdersdorf sogar noch übersteigen dürfte. Im Gegensatz zu Rüdersdorf kann man hier auch noch frei sammeln und Funde sind im Prinzip garantiert. Die Tongruben liegen in der Nähe der Bundesstraße 167 westlich von Bad Freienwalde und sind von Berlin aus einfach zu erreichen. Wie schon anklingt, gibt es zwei Tongruben. Die Nordgrube baut noch und wird immer größer. Sie ist, wenn man aus dem Oderbruch kommt, schon von weitem als heller Fleck in den dunklen bewaldeten Hügelketten um Bad Freienwalde zu erkennen. Die zweite Grube liegt wenig entfernt im Hammerthal. Man fahre die Straße "Im Hammerthal" von der B167 ab und bis zum Ende durch. Man gelangt zu einem kleinen Parkplatz und wandere an der Jugendherberge vorbei in den Wald. Linkerhand läuft ein Zaun entlang, an dessen Ende man sich durch sumpfiges Gelände über einen kleinen Bach hinweg kämpfen muss. Nach einiger Zeit taucht die große Wand der alten Südgrube auf. Bei feuchter Witterung ist absolute Vorsicht geboten. Der Verfasser hat selbst schon mehrmals fast das Schuhwerk eingebüßt, der zähe Ton ist nicht zu unterschätzen.
Diese Lokal­ität ist nach Rüders­dorf wohl der ergie­big­ste Fun­dort in Bran­den­burg. Wobei die An­zahl der Min­er­alarten die von Rüders­dorf so­gar noch über­stei­gen dürfte. Im Ge­gen­satz zu Rüders­dorf kann man hi­er auch noch frei sam­meln und Funde sind im Prinzip garan­tiert. Die Ton­gruben lie­gen in der Nähe ... moreDiese Lokalität ist nach Rüdersdorf wohl der ergiebigste Fundort in Brandenburg. Wobei die Anzahl der Mineralarten die von Rüdersdorf sogar noch übersteigen dürfte. Im Gegensatz zu Rüdersdorf kann man hier auch noch frei sammeln und Funde sind im Prinzip garantiert. Die Tongruben liegen in der Nähe der Bundesstraße 167 westlich von Bad Freienwalde und sind von Berlin aus einfach zu erreichen. Wie schon anklingt, gibt es zwei Tongruben. Die Nordgrube baut noch und wird immer größer. Sie ist, wenn man aus dem Oderbruch kommt, schon von weitem als heller Fleck in den dunklen bewaldeten Hügelketten um Bad Freienwalde zu erkennen. Die zweite Grube liegt wenig entfernt im Hammerthal. Man fahre die Straße "Im Hammerthal" von der B167 ab und bis zum Ende durch. Man gelangt zu einem kleinen Parkplatz und wandere an der Jugendherberge vorbei in den Wald. Linkerhand läuft ein Zaun entlang, an dessen Ende man sich durch sumpfiges Gelände über einen kleinen Bach hinweg kämpfen muss. Nach einiger Zeit taucht die große Wand der alten Südgrube auf. Bei feuchter Witterung ist absolute Vorsicht geboten. Der Verfasser hat selbst schon mehrmals fast das Schuhwerk eingebüßt, der zähe Ton ist nicht zu unterschätzen.
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San José Mine, Oruro, Bo­liviaDo you know El Tio, the ruler of the underworld? In January 2012 Stefan Schorn, administrator of mineralienatlas.de, had the chance to visit the Bolivian San José Mine. In his article he tells us about the history of the mine and shows us with over 60 pictures this adventuresome trip inside the mine. (Article in German)
Do you know El Tio, the ruler of the un­der­world? In Jan­uary 2012 Ste­fan Schorn, ad­min­is­tra­tor of min­er­alie­nat­las.de, had the chance to vis­it the Bo­li­vian San José Mine. In his ar­ti­cle he tells us about the his­to­ry of the mine and shows us with over 60 pic­tures this ad­ven­ture­some trip in­side the mine ... moreDo you know El Tio, the ruler of the underworld? In January 2012 Stefan Schorn, administrator of mineralienatlas.de, had the chance to visit the Bolivian San José Mine. In his article he tells us about the history of the mine and shows us with over 60 pictures this adventuresome trip inside the mine. (Article in German)
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Min­er­al por­trait Baryt (in ger­man)In the late Middle Ages massive amount of Baryt which phosphoresced when it was gently heated, were discovered in Italy. This stone was named after its place of discovery "Pietra fosforica di Bologna" (phosphorescent Bologna stone) and was of great interest to alchemists. Although the name baryte has been assigned centuries later, it may be assumed that the Bologna stone is the first description in the literature. A portrait about this famous mineral by Peter Seroka.
In the late Mid­dle Ages mas­sive amount of Baryt which phos­phoresced when it was gent­ly heat­ed, were dis­cov­ered in Ita­ly. This stone was named af­ter its place of dis­cov­ery "Pi­e­tra fos­for­i­ca di Bolog­na" (phos­phores­cent Bolog­na stone) and was of great in­ter­est to al­chemists. Al­though the name baryte ha ... moreIn the late Middle Ages massive amount of Baryt which phosphoresced when it was gently heated, were discovered in Italy. This stone was named after its place of discovery "Pietra fosforica di Bologna" (phosphorescent Bologna stone) and was of great interest to alchemists. Although the name baryte has been assigned centuries later, it may be assumed that the Bologna stone is the first description in the literature. A portrait about this famous mineral by Peter Seroka.
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His­to­ry of min­ing in the Il­me­nau re­gion... As already mentioned elsewhere, mining in Ilmenau dates back to the year 1200. In 1216, Count Poppo v. Henneberg was enfeoffed with the Bergregal by Friedrich den II. At that time one had discovered mineralised steep copper slate near Roda and on the Sturmheide. Presumably, individual miners had been enfeoffed, who extracted copper slate and sandstone in accordance with the mining freedom. This is generally regarded as the beginning of the first main period of Ilmenau mining. The ore was mined in small open pits to a maximum depth of 50m. ... A Contribution of {:10697:}
... As al­ready men­tioned else­where, min­ing in Il­me­nau dates back to the year 1200. In 1216, Count Pop­po v. Hen­ne­berg was en­fe­offed with the Ber­gre­gal by Frie­drich den II. At that time one had dis­cov­ered min­er­alised steep cop­per slate near Ro­da and on the Sturmheide. Pre­sum­ab­ly, in­di­vi­d­u­al min­ers had ... more... As already mentioned elsewhere, mining in Ilmenau dates back to the year 1200. In 1216, Count Poppo v. Henneberg was enfeoffed with the Bergregal by Friedrich den II. At that time one had discovered mineralised steep copper slate near Roda and on the Sturmheide. Presumably, individual miners had been enfeoffed, who extracted copper slate and sandstone in accordance with the mining freedom. This is generally regarded as the beginning of the first main period of Ilmenau mining. The ore was mined in small open pits to a maximum depth of 50m. ... A Contribution of {:10697:}
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Bes­tim­mungs­merk­male der Rhom­ben­por­phyre (RP) als Geschie­be­fundeAls Bestimmungsmerkmal fallen zweifarbige Einsprenglinge (blaugrau und rosarot) auf, die allerdings auch in der Variante RP26 vorkommen. Das wichtigste Kriterium, um diese beiden Varianten auseinander halten zu können, sind die in der intrusiven Variante vorhandenen, schmalen Zonierungen, welche die blaugrauen Kristalle dünn umschließen. Generell finden sich 2 Arten von Einsprenglingen in der intrusiven Variante: 1. kleine, zerbrochen wirkende rosarote und 2. größere, blaugraue mit schmaler Zonierung, welche die gleiche Farbe aufweist, wie die der Kleineren Einsprenglinge. ... Ein Beitrag von Jörg-Florian J.
Als Bes­tim­mungs­merk­mal fall­en zwei­far­bige Ein­sprenglinge (blau­grau und rosarot) auf, die allerd­ings auch in der Variante RP26 vorkom­men. Das wichtig­ste Kri­teri­um, um diese bei­den Varian­ten au­sei­nan­der hal­ten zu kön­nen, sind die in der in­tru­siv­en Variante vorhan­de­nen, sch­malen Zonierun­gen, welche die ... moreAls Bestimmungsmerkmal fallen zweifarbige Einsprenglinge (blaugrau und rosarot) auf, die allerdings auch in der Variante RP26 vorkommen. Das wichtigste Kriterium, um diese beiden Varianten auseinander halten zu können, sind die in der intrusiven Variante vorhandenen, schmalen Zonierungen, welche die blaugrauen Kristalle dünn umschließen. Generell finden sich 2 Arten von Einsprenglingen in der intrusiven Variante: 1. kleine, zerbrochen wirkende rosarote und 2. größere, blaugraue mit schmaler Zonierung, welche die gleiche Farbe aufweist, wie die der Kleineren Einsprenglinge. ... Ein Beitrag von Jörg-Florian J.
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Min­er­al por­trait gar­netThis portrait mainly deals with the 6 classic garnets, their amazing history, the world’s best known classic and modern localities and deposits and their use as a gems or abrasives. It also deals with the common belief related to the non-existence of blue garnets and its refutation proven by new finds. A separate chapter deals with synthetic garnets. But it also deals with the mix up of definitions, groupings and old and unnecessary terms, which have finally been terminated or brought to a common denominator.

In 2012 the IMA (CNMNC) has defined garnets as members of the Garnet Supergroup, which include all minerals isostructural with garnet regardless of what elements occupy the four atomic sites; i.e. the supergroup includes several chemical classes . Those minerals are closely related to each other and may form a series with each other. Some garnets form intermediary minerals between each member, and may even be intergrown within a single crystal.

With the publication of the new nomenclature of the garnet supergroup, the term “garnet group” does not have its meaning anymore and the intermediate working term “Garnet superstructural group” has been replaced by “Garnet Supergroup”.
There are 32 approved species and 5 “candidate” species waiting on approval. The 32 species are subdivided by their Z-charge into 29 species, which belong to 5 groups and to 3 single representative species.
One of those 5 groups is the “Garnet group”, consisting of the 6 former (classic) garnets Pyrope, Grossular, Spessartine, Almandine, Uvarovite and Andradite plus 8 rarer garnets , as Menzerite-(Y), Eringaite, Goldmanite, Momoiite, Knorringite, Calderite, Majorite and Morimotoite.
This por­trait main­ly deals with the 6 clas­sic gar­nets, their amaz­ing his­to­ry, the world’s best known clas­sic and mod­ern lo­cal­i­ties and de­posits and their use as a gems or abra­sives. It al­so deals with the com­mon be­lief re­lat­ed to the non-ex­is­tence of blue gar­nets and its refu­ta­tion proven by new ... moreThis portrait mainly deals with the 6 classic garnets, their amazing history, the world’s best known classic and modern localities and deposits and their use as a gems or abrasives. It also deals with the common belief related to the non-existence of blue garnets and its refutation proven by new finds. A separate chapter deals with synthetic garnets. But it also deals with the mix up of definitions, groupings and old and unnecessary terms, which have finally been terminated or brought to a common denominator.

In 2012 the IMA (CNMNC) has defined garnets as members of the Garnet Supergroup, which include all minerals isostructural with garnet regardless of what elements occupy the four atomic sites; i.e. the supergroup includes several chemical classes . Those minerals are closely related to each other and may form a series with each other. Some garnets form intermediary minerals between each member, and may even be intergrown within a single crystal.

With the publication of the new nomenclature of the garnet supergroup, the term “garnet group” does not have its meaning anymore and the intermediate working term “Garnet superstructural group” has been replaced by “Garnet Supergroup”.
There are 32 approved species and 5 “candidate” species waiting on approval. The 32 species are subdivided by their Z-charge into 29 species, which belong to 5 groups and to 3 single representative species.
One of those 5 groups is the “Garnet group”, consisting of the 6 former (classic) garnets Pyrope, Grossular, Spessartine, Almandine, Uvarovite and Andradite plus 8 rarer garnets , as Menzerite-(Y), Eringaite, Goldmanite, Momoiite, Knorringite, Calderite, Majorite and Morimotoite.
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