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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Jaspis ist eine mikrokris­tal­line, feinkörnige Va­ri­etät des Min­er­als Quarz und ge­hört wie die­s­es zur Min­er­alk­lasse der Oxide mit einem Stoff­men­gen­ver­hält­nis mit Me­t­all: Sauer­stoff = 1:2. Es ist eng ver­wandt mit dem stets faserig aufge­baut­en Chal­ce­don. Die Ver­wandtschaft ist so eng, dass so­gar Stücke ... moreJaspis ist eine mikrokristalline, feinkörnige Varietät des Minerals Quarz und gehört wie dieses zur Mineralklasse der Oxide mit einem Stoffmengenverhältnis mit Metall: Sauerstoff = 1:2. Es ist eng verwandt mit dem stets faserig aufgebauten Chalcedon. Die Verwandtschaft ist so eng, dass sogar Stücke vorkommen, bei denen körnig und faserig aufgebaute Quarzmaterialien miteinander verwachsen sind. Jaspis ist nur sehr selten in reiner Form zu finden. Durch Verwachsungen mit Achat und Opal, aber auch durch Fremdbeimengungen von bis zu 20 % wie Tonerde, Eisenoxid, Eisenhydroxid und Manganhydroxid schwanken seine chemischen und physikalischen Eigenschaften sehr stark. Da die Menge und Verteilung dieser Beimengungen über das Erscheinungsbild entscheiden, ist der Farb- und Varietätenspielraum des Jaspis außerordentlich groß.... Ein Beitrag von Peter Seroka
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... Der Be­griff Karst ste­ht für die Ge­samtheit der For­men von durch­läs­si­gen, wasser­lös­lichen Gestei­nen (z.B. Kalk­stein, Gips, Salze), die durch Ober­flächen- und Grund­wass­er aus­ge­laugt wer­den. Als verkars­tende Gesteine gel­ten in der Rei­hen­folge ihre Lös­lichkeit Salze (An­hy­drit, Gips, Kalk- und Quarzg ... more... Der Begriff Karst steht für die Gesamtheit der Formen von durchlässigen, wasserlöslichen Gesteinen (z.B. Kalkstein, Gips, Salze), die durch Oberflächen- und Grundwasser ausgelaugt werden. Als verkarstende Gesteine gelten in der Reihenfolge ihre Löslichkeit Salze (Anhydrit, Gips, Kalk- und Quarzgesteine (Sandstein, Quarzite)). Durch Lösungsvorgänge kommt es zu charakteristischen Karsterscheinungen. An der Oberfläche sind dies z.B. Karren (Schratten), Dolinen, Uvalas, Poljen, Schlotten, Erdorgeln. Zu den unterirdischen Karsterscheinungen gehören oft weit verzweigte Höhlen und die typischen Erscheinungen der Karsthydrographie: unterirdische Flussläufe und Karstseen, Karstquellen, die unter ... ein Beitrag von Peter Seroka
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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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Sil­ver and sil­ver min­er­als are amongst the most de­sir­abe ob­jects since the be­gin­n­ing of min­er­al col­lect­ing. Sil­ver wires and curls from Kongs­berg and Freiberg are the coro­na­tion of each min­er­al col­lec­tion. Beau­ti­ful pyrar­gyrites and proustites en­hance each col­lec­tor's heat­beat.

How­ev­er, sil­ver is ... moreSilver and silver minerals are amongst the most desirabe objects since the beginning of mineral collecting. Silver wires and curls from Kongsberg and Freiberg are the coronation of each mineral collection. Beautiful pyrargyrites and proustites enhance each collector's heatbeat.

However, silver is not only the essence of high-end collecting but has contributed essentially to the history of mankind. Uncountable remain the millions of greek and phenician slaves, middle age european miners and millions of indios who have left their lives for silver.

Silver is one of the seven metals known since thousands of years, already been mentioned in the bible. Mountains of slag in Asia Minor, Arabia and on the agaen islands prove technologies to produce silver from lead ore; knowledges people had been acquainted with since at least 4.000 year B.C. Since the antiquity silver had been used to make finery and ornaments, however, most of this metal was used to stamp coins. The monetary system of many countries was based on silver; the one, who owned silver, was able to finance wars. One of the main pillars of power of Athens, Rome, the Phenicians, the church, the kings and queens of Castilia, the Austrian house of Habsburg and, last not least, of the Americans had been their control over the richest silver mines and the wars, which they made by paying their soldiery with silver coins.
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... 1922 er­wer­ben die "Süd­deutsche Flußs­patw­erke GmbH", Nab­burg das Aus­beuterecht der Plan­Nr. 706 vom Bauer Xaver Wil­helm in Stulln und suchen hi­er nach Flußs­pat un­ter Grube Stull­n­er Berg II. Dies war der An­satz für die En­twick­lung des Berg­baus auf dem später so ge­nan­n­ten Er­na-Gang.
1929 kom­men die ... more... 1922 erwerben die "Süddeutsche Flußspatwerke GmbH", Nabburg das Ausbeuterecht der PlanNr. 706 vom Bauer Xaver Wilhelm in Stulln und suchen hier nach Flußspat unter Grube Stullner Berg II. Dies war der Ansatz für die Entwicklung des Bergbaus auf dem später so genannten Erna-Gang.
1929 kommen die "Süddeutsche Flußspatwerke GmbH", Nabburg infolge der schlechten Absatzlage in Zahlungsschwierigkeiten, der Betrieb wird stillgelegt und Konkurs angemeldet.
1933 erwirbt Eduard Montag, der letzte Betriebsleiter der Süddeutschen Flußspatwerke, aus der Konkursmasse von die Firma "Süddeutschen Flußspatwerke GmbH" den Untersuchungsbetrieb auf PlanNr. 706. Eduard Montag kauft einen 25 PS Dieselmotor und einen Kompressor und teuft einen Schacht bis auf 70 m ab und beginnt mit der Flußspatförderung. Die Grube bekam den Namen seiner Frau "Erna".
1934 errichtet Montag auch eine Flußspatwäsche ... Ein Beitrag von Michael Kommer
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