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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
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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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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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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.
 
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 Gale­naIt is not possible to write a chapter about the mineral galena without looking at the history of lead and silver to name two of the most important raw materials and materials of humanity. How long people processed galena as main ore for the production of lead is unknown. As lead inter alia used as an additive to various melts (e.g. to bronze and the salt-cementation process for gold extraction) one can assume that the properties of this mineral were known before 3000 BC. Other sources speak of a history of lead about 7000-9000 years BC back.
It is not pos­si­ble to write a chapter about the min­er­al gale­na with­out look­ing at the his­to­ry of lead and sil­ver to name two of the most im­por­tant raw ma­te­rials and ma­te­rials of hu­mani­ty. How long peo­ple pro­cessed gale­na as main ore for the pro­duc­tion of lead is un­known. As lead in­ter alia used as a ... moreIt is not possible to write a chapter about the mineral galena without looking at the history of lead and silver to name two of the most important raw materials and materials of humanity. How long people processed galena as main ore for the production of lead is unknown. As lead inter alia used as an additive to various melts (e.g. to bronze and the salt-cementation process for gold extraction) one can assume that the properties of this mineral were known before 3000 BC. Other sources speak of a history of lead about 7000-9000 years BC back.
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Min­er­al At­las be­came 20 years, Estab­lish­ment of the Ge­olitho foun­da­tion gGmbHIn the last 10 years, in addition to further development, the focus has been on cooperation and securing the future. In the year 20 after foundation, we have now taken an overdue and large step in this direction...
In the last 10 years, in ad­di­tion to fur­ther de­vel­op­ment, the fo­cus has been on co­op­er­a­tion and se­cur­ing the fu­ture. In the year 20 af­ter foun­da­tion, we have now tak­en an over­due and large step in this di­rec­tion... ... moreIn the last 10 years, in addition to further development, the focus has been on cooperation and securing the future. In the year 20 after foundation, we have now taken an overdue and large step in this direction...
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The Ts­in­gys of Mada­gas­carOne of Madagascar's geological specialties are the so-called Tsingy: bizarre, at first sight hostile Karst landscapes, though form, due to the inaccessibility, a refugial area for some species. The word Tsingy means "walking one tip-toes" or "where one cannot walk bare-foot" in Malagasy language, an accurate description for the partially razor-sharp rock formations which can reach 20 m in height and with ends which can be as thin as pencils.

Best known and most impressive are the Tsingy of Bemaraha in the West of the island and the Tsingy of Ankarana in the North, both widespread Karst areas. In the North, as well, about 10 km south of the city of Antsiranana, one can find the Red Tsingy which have been washed out of the lateritic layer of earth.
One of Mada­gas­car's ge­o­log­i­cal spe­cial­ties are the so-called Ts­in­gy: bizarre, at first sight hos­tile Karst land­s­capes, though form, due to the in­ac­ces­si­bil­i­ty, a refu­gial area for some spe­cies. The word Ts­in­gy means "walk­ing one tip-toes" or "where one can­not walk bare-foot" in Mala­gasy lan­guage, an ... moreOne of Madagascar's geological specialties are the so-called Tsingy: bizarre, at first sight hostile Karst landscapes, though form, due to the inaccessibility, a refugial area for some species. The word Tsingy means "walking one tip-toes" or "where one cannot walk bare-foot" in Malagasy language, an accurate description for the partially razor-sharp rock formations which can reach 20 m in height and with ends which can be as thin as pencils.

Best known and most impressive are the Tsingy of Bemaraha in the West of the island and the Tsingy of Ankarana in the North, both widespread Karst areas. In the North, as well, about 10 km south of the city of Antsiranana, one can find the Red Tsingy which have been washed out of the lateritic layer of earth.
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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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Kün­stliche Kris­talleSynthetisch heißt so viel wie künstlich erzeugt. Es gibt sowohl künstliche anorganische (z.B. synthetische Rubine) als auch organische Kristalle (z.B. Zucker als Kandis). Sie unterscheiden sich von den natürlichen Verwandten meist durch ihre höhere Reinheit oder durch ihre gezielte Verunreinigung, Dotierung genannt. Synthetische Kristalle können durch relativ einfache Züchtung (z.B. Alaun-, Salz- oder Zuckerkristalle), unter Einwirkung extremer Hitze und Druck (z.B. Diamant), sowie als synthetische Einkristalle durch spezielle Technologien (z.B. Ziehen aus der Schmelze), aperiodische Einkristalle aus besonderen Legierungen etc. hergestellt werden. Ein Beitrag von Peter Seroka und Frank M.
Syn­thetisch heißt so viel wie kün­stlich erzeugt. Es gibt so­wohl kün­stliche anor­ganische (z.B. syn­thetische Ru­bine) als auch or­ganische Kris­talle (z.B. Zuck­er als Kan­dis). Sie un­ter­schei­den sich von den natür­lichen Ver­wandten meist durch ihre höhere Rein­heit oder durch ihre gezielte Verun­reini­gung, D ... moreSynthetisch heißt so viel wie künstlich erzeugt. Es gibt sowohl künstliche anorganische (z.B. synthetische Rubine) als auch organische Kristalle (z.B. Zucker als Kandis). Sie unterscheiden sich von den natürlichen Verwandten meist durch ihre höhere Reinheit oder durch ihre gezielte Verunreinigung, Dotierung genannt. Synthetische Kristalle können durch relativ einfache Züchtung (z.B. Alaun-, Salz- oder Zuckerkristalle), unter Einwirkung extremer Hitze und Druck (z.B. Diamant), sowie als synthetische Einkristalle durch spezielle Technologien (z.B. Ziehen aus der Schmelze), aperiodische Einkristalle aus besonderen Legierungen etc. hergestellt werden. Ein Beitrag von Peter Seroka und Frank M.
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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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Beryl - (Goshenite, Aqua­marine, Emer­ald, Mor­ganite, He­lio­dore ...)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 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)
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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