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17. May - Gera, Mu­se­um für Na­turkunde: Ausstel­lungseröff­nung
21. May - 29. In­ter­na­tio­nale Jahres­ta­gung Geo­Top der Fach­sek­tion Geo­to
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17. May - Gera, Mu­se­um für Na­turkunde: Ausstel­lungseröff­nung
21. May - 29. In­ter­na­tio­nale Jahres­ta­gung Geo­Top der Fach­sek­tion Geo­to
03. June - Min­er­alien- Hausmesse Wech­sel­burg
06. June - GERA: „Min­er­alien­tr­eff im Ju­ni“
07. June - 4. Fest der edlen Steine im Rit­tergut Treb­sen/Sach­sen
13. June - Min­er­alien­börse in Knit­telfeld
14. June - Min­er­alien­börse im Fin­d­lings­park Nocht­en
21. June - Min­er­alien­börse
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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 10586 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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Min­er­al Por­trait CalciteCalcite is one of the most abundant natural minerals. It is found in very different shapes, both compact as limestone as well as sinter in caves and in the crystalline state. But even in our daily life calcite is always present: in some regions it blockes water pipes as "chalk", we build our houses with it, it is in our food chain and without it we could not stand upright.

Calcite is not rare, but the varied mineral on Earth. The variety of forms and variations of the forms of calcite are unmatched in the world of mineralogy. By 2009, more than 800 Calcit forms have been described.
Calcite is one of the most abun­dant na­t­u­ral min­er­als. It is found in very dif­fer­ent shapes, both com­pact as lime­s­tone as well as sin­ter in caves and in the crys­tal­line state. But even in our dai­ly life calcite is al­ways pre­sent: in some re­gions it block­es wa­ter pipes as "chalk", we build our hous­es ... moreCalcite is one of the most abundant natural minerals. It is found in very different shapes, both compact as limestone as well as sinter in caves and in the crystalline state. But even in our daily life calcite is always present: in some regions it blockes water pipes as "chalk", we build our houses with it, it is in our food chain and without it we could not stand upright.

Calcite is not rare, but the varied mineral on Earth. The variety of forms and variations of the forms of calcite are unmatched in the world of mineralogy. By 2009, more than 800 Calcit forms have been described.
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The Mu­nich Show 2025The Mineralientage München 2025 – The Munich Show once again showcased a fascinating variety of minerals, fossils, and jewelry. Although visitor numbers appeared slightly lower than last year, the fair remained vibrant and diverse. Highlights included the collector displays and the special exhibition on natural resources, while the fossil section was somewhat smaller.
Some visitors expressed a wish for more seating areas, opportunities for exchange, and more eye-catching advertising, yet overall the event left a very positive impression and remains a must-visit for collectors and families alike.
The Min­er­alien­t­age München 2025 – The Mu­nich Show once again show­cased a fas­ci­nat­ing va­ri­e­ty of min­er­als, fos­sils, and jew­el­ry. Al­though vis­i­tor num­bers ap­peared slight­ly low­er than last year, the fair re­mained vi­brant and di­verse. High­lights in­clud­ed the col­lec­tor dis­plays and the spe­cial ex­hi­bi­tio ... moreThe Mineralientage München 2025 – The Munich Show once again showcased a fascinating variety of minerals, fossils, and jewelry. Although visitor numbers appeared slightly lower than last year, the fair remained vibrant and diverse. Highlights included the collector displays and the special exhibition on natural resources, while the fossil section was somewhat smaller.
Some visitors expressed a wish for more seating areas, opportunities for exchange, and more eye-catching advertising, yet overall the event left a very positive impression and remains a must-visit for collectors and families alike.
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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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Vilo­co Mine, La Paz, Bo­livienDie Viloco Mine liegt hoch über der Ortschaft Viloco auf bis zu über 4900m. Die Mine zieht sich dabei über mehrere hundert Meter entlang des Berges in die Höhe. Sie befindet sich im "Cordillera Quimsa Cruz" (Aymara-Sprache) oder "Kimsa Krus" (Quechua-Sprache) oder auch "Tres Cruces" (deutsch "drei Kreuze") genanntem Gebirgszug im Departamento La Paz. Zahlreiche Stolleneingänge und meist verfallene Bergwerksbauten zeugen von einer umfangreichen Bergbautätigkeit. Verschiedene Quellen schreiben auch von Araca Mine, der Name sei quasi austauschbar. Hierbei handelt es sich um einen historischen Namen.
Die Vilo­co Mine liegt hoch über der Ortschaft Vilo­co auf bis zu über 4900m. Die Mine zie­ht sich dabei über mehrere hun­dert Me­ter ent­lang des Berges in die Höhe. Sie befin­d­et sich im "Cordillera Quim­sa Cruz" (Ay­mara-Sprache) oder "Kim­sa Krus" (Quechua-Sprache) oder auch "Tres Cruces" (deutsch "drei K ... moreDie Viloco Mine liegt hoch über der Ortschaft Viloco auf bis zu über 4900m. Die Mine zieht sich dabei über mehrere hundert Meter entlang des Berges in die Höhe. Sie befindet sich im "Cordillera Quimsa Cruz" (Aymara-Sprache) oder "Kimsa Krus" (Quechua-Sprache) oder auch "Tres Cruces" (deutsch "drei Kreuze") genanntem Gebirgszug im Departamento La Paz. Zahlreiche Stolleneingänge und meist verfallene Bergwerksbauten zeugen von einer umfangreichen Bergbautätigkeit. Verschiedene Quellen schreiben auch von Araca Mine, der Name sei quasi austauschbar. Hierbei handelt es sich um einen historischen Namen.
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Red lay­erIn 1978 the US - American geologist Walter Alvarez gained a narrow pattern red clay in the Italian Apennines and certain age these samples to approximately 65 million years , ie at the end of the Cretaceous period and the beginning of the Tertiary period. This very thin lime- clay layer lies between two calcareous sediments and showed a different fossil record , which to a mass extinction ( faunal ) hinted .

While further analysis Alvarez noted a high iridium concentrations; a typical ... An article by Peter Seroka (written in german)
In 1978 the US - Amer­i­can ge­ol­o­gist Wal­ter Al­varez gained a nar­row pat­tern red clay in the Italian Apen­nines and cer­tain age th­ese sam­ples to ap­prox­i­mate­ly 65 mil­lion years , ie at the end of the Cre­ta­ceous pe­ri­od and the be­gin­n­ing of the Ter­tiary pe­ri­od. This very thin lime- clay lay­er lies be­tween ... moreIn 1978 the US - American geologist Walter Alvarez gained a narrow pattern red clay in the Italian Apennines and certain age these samples to approximately 65 million years , ie at the end of the Cretaceous period and the beginning of the Tertiary period. This very thin lime- clay layer lies between two calcareous sediments and showed a different fossil record , which to a mass extinction ( faunal ) hinted .

While further analysis Alvarez noted a high iridium concentrations; a typical ... An article by Peter Seroka (written in german)
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Dev­il's Pul­pitActually, this is a picturesque place in a well-kept forest. Nevertheless, in the past, evil itself is said to have preached to the damned here from a large, solitary, towering rock spur. Today, the term Devil's Pulpit inspires one to play with associations, as do the drawings of agates found here. Their fantastic outlines, coupled with the unusual shape of the secondary rock, evoke images in the viewer that he would not have suspected in a stone. And on the devil's pulpit no longer an evil demon is waiting for the agate collector, but other executive powers threatening with purgatory... a contribution by Klaus Schäfer and others (in german)
Ac­tu­al­ly, this is a pic­turesque place in a well-kept for­est. Nev­er­the­less, in the past, evil it­self is said to have preached to the damned here from a large, sol­i­tary, tow­er­ing rock spur. To­day, the term Dev­il's Pul­pit in­spires one to play with as­so­ci­a­tions, as do the draw­ings of agates found here. ... moreActually, this is a picturesque place in a well-kept forest. Nevertheless, in the past, evil itself is said to have preached to the damned here from a large, solitary, towering rock spur. Today, the term Devil's Pulpit inspires one to play with associations, as do the drawings of agates found here. Their fantastic outlines, coupled with the unusual shape of the secondary rock, evoke images in the viewer that he would not have suspected in a stone. And on the devil's pulpit no longer an evil demon is waiting for the agate collector, but other executive powers threatening with purgatory... a contribution by Klaus Schäfer and others (in german)
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Ge­ol­o­gisch­es Por­trait - Schie­ferDer Begriff "Schiefer" ist ein Polysem, welcher seit grauer Vorzeit (althochdeutsch scivaro (Holz-, Steinsplitter); mittelhochdeutsch schiver(e) (Stein-, Holzsplitter); mittelniederdeutsch schiver (Schiefer, Schindel) bis heute nicht scharf definiert und differenziert wurde. Allgemein und bergmännisch werden als Schiefer deutlich parallel angeordnete, in dünnen, ebenen Platten spaltbare Gesteine bezeichnet. Unter diesen Sammelbegriff fallen jedoch auch Tonschiefer, Schieferton, Tonstein, kristalline Schiefer, echte und unechte, kristalline und metamorphe Schiefer und viele, viele synonyme Schiefer-Wortgebilde und lokale Bezeichnungen- was nicht zu einer eindeutigen Definition beiträgt.

Nicht anders war (und ist) die Verwirrung in England, wo die Begriffe slate, shale und shist nicht deutlich getrennt wurden; im untertage Kohlebergbau hieß shale auch häufig slate. In Spanien heißt der für Dächer und Tafeln verwendete Schiefer pizarra, petrologisch aber equisto bzw. arcilla equistosa; im französischen heißen wissenschaftlich alle Schiefer schiste, aber der im Steinbruch gebrochene Schiefer ist .... Ein geologisches Portrait von Peter Seroka
Der Be­griff "Schie­fer" ist ein Pol­y­sem, welch­er seit grauer Vorzeit (al­thochdeutsch sci­varo (Holz-, Stein­s­plit­ter); mit­tel­hochdeutsch schiv­er(e) (Stein-, Holzs­plit­ter); mit­tel­nied­erdeutsch schiv­er (Schie­fer, Schin­del) bis heute nicht scharf definiert und dif­ferenziert wurde. All­ge­mein und berg­män­nis ... moreDer Begriff "Schiefer" ist ein Polysem, welcher seit grauer Vorzeit (althochdeutsch scivaro (Holz-, Steinsplitter); mittelhochdeutsch schiver(e) (Stein-, Holzsplitter); mittelniederdeutsch schiver (Schiefer, Schindel) bis heute nicht scharf definiert und differenziert wurde. Allgemein und bergmännisch werden als Schiefer deutlich parallel angeordnete, in dünnen, ebenen Platten spaltbare Gesteine bezeichnet. Unter diesen Sammelbegriff fallen jedoch auch Tonschiefer, Schieferton, Tonstein, kristalline Schiefer, echte und unechte, kristalline und metamorphe Schiefer und viele, viele synonyme Schiefer-Wortgebilde und lokale Bezeichnungen- was nicht zu einer eindeutigen Definition beiträgt.

Nicht anders war (und ist) die Verwirrung in England, wo die Begriffe slate, shale und shist nicht deutlich getrennt wurden; im untertage Kohlebergbau hieß shale auch häufig slate. In Spanien heißt der für Dächer und Tafeln verwendete Schiefer pizarra, petrologisch aber equisto bzw. arcilla equistosa; im französischen heißen wissenschaftlich alle Schiefer schiste, aber der im Steinbruch gebrochene Schiefer ist .... Ein geologisches Portrait von Peter Seroka
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