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 10530 members. Every month hundreds of thousands of visitors use our website as an information source.
 
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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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The Al­ten­berg tin mine is well known for its huge sur­face break left by the min­ing ac­tiv­i­ties. Among min­er­al col­lec­tors the mine is fa­mous as well for its unique Py­c­nite de­posit, a va­ri­e­ty of to­paz oc­cur­ring in mas­sive colum­nar ag­gre­gates up to a length of 30 cm.

The min­ing start­ed in 1440 and c ... moreThe Altenberg tin mine is well known for its huge surface break left by the mining activities. Among mineral collectors the mine is famous as well for its unique Pycnite deposit, a variety of topaz occurring in massive columnar aggregates up to a length of 30 cm.

The mining started in 1440 and continued, with several ups and downs and some total shut-down periods, until 1991. The mining activities aimed for a plutonic granite body (350 to 400 metre in diameter and hydrothermally mineralized mainly with cassiterite and smaller amounts of wolframite, molybdenite, arsenopyrite, bismuth and others) and managed to extract a total sum of 37 million tons of ore. The huge surface break, called "The Altenberger Pinge", is the result of several roof collapses caused by excessive ore excavation and later on the continued drawing of caved material from the bottom of the fracture zone.

Collectible minerals were rare and small, so the Altenberg tin mine became never as famous as the Freiberg or Ehrenfriedersdorf districts, but its unique geology and mining technology made it quite interesting and worth a closer look.

(Full text in german)
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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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Un­ter den klas­sischen Fund­stellen für Azu­rit nimmt die Kupfer­er­zlager­stätte Chessy-les-Mines nord­west­lich von Ly­on eine ho­hen Stel­len­w­ert ein. Diese Azu­rite sind un­ter Samm­lern als "Ches­sylith" bekan­nt. Erst seit eini­gen Jahren kom­men aus Chi­na Stufen auf den Samm­ler­markt, die an die Stücke aus Ch­es ... moreUnter den klassischen Fundstellen für Azurit nimmt die Kupfererzlagerstätte Chessy-les-Mines nordwestlich von Lyon eine hohen Stellenwert ein. Diese Azurite sind unter Sammlern als "Chessylith" bekannt. Erst seit einigen Jahren kommen aus China Stufen auf den Sammlermarkt, die an die Stücke aus Chessy in etwa heranreichen. Chessy-Azurite besitzen bei Sammlern einen mindestens ebenso hohen Stellenwert wie Stücke aus Tsumeb, sind aber seltener und, in guter Qualität, unbezahlbar geworden. Funde werden, in bescheidenem Ausmaß, noch in den alten Halden getätigt. Die Größe der heute noch zu findenden Stücke haben in etwa den Durchmesser von Haselnüssen. Die Halden befinden sich in Privatbesitz und die Suche ist auf einen französischen Sammlerkreis begrenzt. Selten tauchen auf Börsen kleinere Stücke auf und Besitzer von Chessylithen trennen sich ...
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