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 10521 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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Mineralien Kalender
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Be­cause of its form, col­or and trans­paren­cy, Beryl has al­ways fas­ci­nat­ed peo­ple. Emer­alds, aqua­marines, he­lio­dors and mor­ganites were and are used for the man­u­fac­ture of jew­el­ry be­cause of their beau­ty. The com­mon beryl is the main source of the me­t­al beryl­li­um; 80 % of beryl­li­um ore is mined in the ... moreBecause of its form, color and transparency, Beryl has always fascinated people. Emeralds, aquamarines, heliodors and morganites were and are used for the manufacture of jewelry because of their beauty. The common beryl is the main source of the metal beryllium; 80 % of beryllium ore is mined in the United States. The largest known crystal reached a length of 18 m.

This lavishly researched and very comprehensive portrait by the author Peter Seroka relates to history, name origin, causes of color, occurrences , paragenesis and the use of this mineral and its varieties. Subchapters with numerous photographs and drawings deal with the extraordinary beauty of the mineral. Each chapter itself is a separate portrait of a distinctive variety and its characteristics, occurrences, use and history.

(Full text in German)
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Die "Le­bach­er Ei­er" ent­s­tan­den vor et­wa 250 bis 280 Mil­lio­nen Jahren zur Zeit des Perm. Im Ge­bi­et des heuti­gen Ortes Le­bach im Saar­land bis nach Bad Kreuz­nach er­streckte sich ein weit ausgedeh­n­ter Bin­nensee, der eine Fläche be­deckte, die unge­fähr drei­mal so groß wie der Bo­densee gewe­sen sein dürfte. ... moreDie "Lebacher Eier" entstanden vor etwa 250 bis 280 Millionen Jahren zur Zeit des Perm. Im Gebiet des heutigen Ortes Lebach im Saarland bis nach Bad Kreuznach erstreckte sich ein weit ausgedehnter Binnensee, der eine Fläche bedeckte, die ungefähr dreimal so groß wie der Bodensee gewesen sein dürfte.

In diesem nicht so flachen See, der durch verzweigte Flusssysteme gespeißt wurde, selbst jedoch keinen größeren Strömungen unterworfen war, fand sich eine gut, durch Funde belegte, Flora und Fauna. Das Klima war nicht mehr so tropisch wie während der vorangegangenen Karbon-Zeit, sondern trockener. Das wiederum führte zur Bildung von lokalen Biotopen, wie sie hier in Form dieses Seebeckens vorlagen.
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Mag­ma­tis­mus ist die zusam­men­fassende Bezeich­nung für alle mit dem Mag­ma zusam­men­hän­gen­den ge­ol­o­gischen Prozesse, Vorgänge und Er­schei­n­un­gen. Der Mag­ma­tis­mus um­fasst so­wohl den den Plu­ton­is­mus, d.h., die Prozesse, die zur Bil­dung von Mag­men in der Erde führen, ihre Be­we­gung verur­sachen, die Kris­tal­li ... moreMagmatismus ist die zusammenfassende Bezeichnung für alle mit dem Magma zusammenhängenden geologischen Prozesse, Vorgänge und Erscheinungen. Der Magmatismus umfasst sowohl den den Plutonismus, d.h., die Prozesse, die zur Bildung von Magmen in der Erde führen, ihre Bewegung verursachen, die Kristallisation steuern, das Aufsteigen, die Bildung der Erdkruste und letzendlich die Erstarrung als auch den Vulkanismus, bei dem das Magma die Oberfläche erreicht und als Lava extrudiert wird. Durch Magmatismus entstehen Magmatite, d.h.magmatische plutonische Gesteine im Erdinneren und vulkanische Gesteine als Folge des Vulkanismus. Ein Beitrag unseres verstorbenen Mitglieds Peter Seroka u.a. - In Dankbarkeit
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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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In­di­ca­tor stoneA Scandinavian indicator stone is a glacial erratic composed of a characteristic rock type derived from a small known source area in Scandinavia. This term not only applies to igneous and metamorphic rocks but also to some sedimentary rocks. The Jotnian Sandstone and most of the Palaeozoic limestones, and the Old Red Sandstone are not included in the definition, although the presence of these and other rocks provide some evidence about the source area(s) of erratics and should certainly not be neglected in a stone count. In all cases we recommend including the whole assemblage of erratics/stones in such account. This makes it possible to use several methods of Interpretation. However, it should be pointed out that the practise used in the past, whereby each researcher had her/his own method of interpreting stone counts, has proved to be unsatisfactory. We demonstrate on the bases of over 2000 counts of indicator stones that we have carried out on assemblages mostly from Lower Saxony and Schleswig-Holstein, but also from other N.German states and neighbouring countries, that the TGZ method (LÜTTIG 1958) yields the most reliable results. In addition to this method, the sources of individual indicator stones may be plotted on a so-called circle map and can be integrated with possible source data and the relative frequencies of other erratics in the assemblage. Some rock types are more suitable as indicator stones then others. It is unwise to use clearly unsuitable rock types; this would considerably reduce the reliability of the method and lead to erroneous results.
A Scan­di­na­vian in­di­ca­tor stone is a gla­cial er­rat­ic com­posed of a char­ac­teris­tic rock type de­rived from a small known source area in Scan­di­navia. This term not on­ly ap­plies to ig­neous and me­ta­mor­ph­ic rocks but al­so to some sed­i­men­tary rocks. The Jot­nian Sand­s­tone and most of the Palaeo­zoic lime­s­tone ... moreA Scandinavian indicator stone is a glacial erratic composed of a characteristic rock type derived from a small known source area in Scandinavia. This term not only applies to igneous and metamorphic rocks but also to some sedimentary rocks. The Jotnian Sandstone and most of the Palaeozoic limestones, and the Old Red Sandstone are not included in the definition, although the presence of these and other rocks provide some evidence about the source area(s) of erratics and should certainly not be neglected in a stone count. In all cases we recommend including the whole assemblage of erratics/stones in such account. This makes it possible to use several methods of Interpretation. However, it should be pointed out that the practise used in the past, whereby each researcher had her/his own method of interpreting stone counts, has proved to be unsatisfactory. We demonstrate on the bases of over 2000 counts of indicator stones that we have carried out on assemblages mostly from Lower Saxony and Schleswig-Holstein, but also from other N.German states and neighbouring countries, that the TGZ method (LÜTTIG 1958) yields the most reliable results. In addition to this method, the sources of individual indicator stones may be plotted on a so-called circle map and can be integrated with possible source data and the relative frequencies of other erratics in the assemblage. Some rock types are more suitable as indicator stones then others. It is unwise to use clearly unsuitable rock types; this would considerably reduce the reliability of the method and lead to erroneous results.
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