Miloš René

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The Czech Academy of Sciences | AVCR · Instïtute of Rock Structure and Mechanics

The Sn-W ore deposits in the Krupka surroundings are associated with greisens, which occur in the upper parts of Late Variscan granitoid intrusions. Fluid inclusions were studied in samples of quartz, cassiterite, apatite, fluorite, and topaz in greisenized granites, greisens, and hydrothermal veins with Sn-W mineralization. The greisenization proc...

Summary: Nb-Ta-Ti-bearing oxide minerals represent the most common hosts of Nb and Ta in high-F, high-P2O5, Li-mica granites from the Sauberg granite stock in the Krušné hory/Erzgebirge Mts. batholith (Figure 1). The stock hosts the Ehrenfriedersdorf ore deposit, representing the most significant Sn-W ore deposit in this area. This ore deposit was...

Biotite granodiorites belonging to the redwitzite suite of western part of the Bohemian Massif occur as small bodies in metasediments of the Horní Slavkov crystalline unit and/or as inclusions in biotite granites of the Krušné Hory/Erzgebirge Mts. batholith. Biotite granodiorites contain plagioclase, K-feldspar, biotite, quartz, and accessory miner...

Nb-Ta-Ti-bearing oxide minerals represent the most common hosts of Nb and Ta in high-F, high-P2O5, Li-mica granites from the Sauberg granite stock in the Krušné hory/Erzgebirge Mts. batholith (Figure 1). The stock hosts the Ehrenfriedersdorf ore deposit, representing the most significant Sn-W ore deposit in this area. This ore deposit was mined fro...

The Moldanubian Batholith is the largest Variscan magmatic complex in the Bohemian Massif, which is part of the Central European Hercynian belt. In northern part of the Moldanubian Batholith occur relatively small bodies of granitoids which could be correlated with biotite granodiorites of the Mauthausen type which occur in the Austrian part of thi...

Figure S1: Four examples of the H/V curves indicating prominent subsurface contrasts. The identified resonance frequencies are marked with gray solid lines and the values along with the location identifiers are in the titles; Figure S2: Photograph (c) shows an extraction of the rock sample of the porous basalt (for explanation see text); Figure S3:...

The San Andrés landslide on El Hierro (Canary Islands) represents a rare opportunity to study an incipient volcanic island flank collapse with an extensive onshore part. The presented research improves the knowledge of the internal structure and rock characteristics of a mega-landslide before its complete failure. The investigation combines multipl...

The amphibolites from the Strážov Moldanubian unit in western part of the Bohemian Massif form intercalations in metasediments of this geological unit. The Strážov Moldanubian unit forms the westernmost occurrence of Variegated group of the Moldanubian Zone. These amphibolites occur as intercalations of very different size in biotite-sillimanite, p...

Uraniferous bitumens found in black shales from the Permian rocks at Vrchlabí in the Krkonoše Piedmont Basin (Czech Republic) were described and characterized petrologically and mineralogically. The Permian sediments originated from weathering products in metasediments and granitoids of the Krkonoše–Jizera and Orlice–Sněžník crystalline complexes....

The Central Bohemian magmatic complex belongs to the Central European Variscan belt. The granitic rocks of this plutonic complex are formed by several suites of granites, granodiorites, and tonalites, together with small bodies of gabbros, gabbro diorites, and diorites. The granodiorites of the Blatná suite are high-K, calc-alkaline to shoshonitic,...

Landslides or landslide-induced impact waves in high mountain lakes represent a high hazard for society, calling for realistic assessments of rock slope stability responsible for the process chain initiation. This task is often hampered by complex interplays of triggers, which effects on slope stability may be delayed by decades or even millennia,...

Landslides or landslide-induced impact waves in high mountain lakes represent a highhazard for society, calling for realistic assessments of rock slope stability responsible forthe process chain initiation. This task is often hampered by complex interplays of triggers, which effects on slope stability may be delayed by decades or even millennia, wh...

Granitic rocks of the Moldanubian batholith are represented by four magmatic suites: I- to S-type Weinsberg biotite granites-granodiorites, S-type Eisgarn two-mica granites, S-type Melechov/Zvůle two mica, highly fractionated granites and I/S-type Freistadt biotite granites-granodiorites. The biotite granites of the Weinsberg suite are subaluminou...

The Bohemian magmatic complex belongs to granitoid plutons of the Central European Variscides. Hydrothermal uranium mineralization evolved in the small uranium deposits Nahošín and Mečichov is associated with N-S shear zones occurring on the SW margin of the Central Bohemian plutonic complex formed by amphibole-bearing biotite granodiorites of the...

The study involved an experimental assessment of the CO2 and CH4 sorption capacity of seven dark Silurian shale samples from three formations in the Barrandian Basin (Czech Republic). The shale samples had dominant inorganic matter consisting mainly of clay minerals, quartz, calcite and plagioclase, and very low organic matter. Most of the organic...

Volcanic flank collapses often result in giant debris avalanches that are capable of travelling tens of kilometres across the ocean floor and generating tsunamis that devastate distant communities. The San Andrés Landslide on El Hierro, Canary Islands, represents one of the few places in the world where it is possible to investigate the landslide m...

Samples from the Zadní Chodov uranium deposit of the Bohemian Massif were analysed using optical and chemical methods. Organic matter and brannerite were studied in detail to estimate conditions that prevailed in association with uranium-enriched shear zones. Four major events are known in the high-grade metasediments. The pre-ore stage is associat...

Titanite-rich granodiorites occurring in the Austrian Mühlviertel are intimately associated with the I/S-granites of the Mauthausen/Freistadt granite suite. These rocks form small irregular bodies in granites of this granitic suite of the Moldanubian batholith that are represented by usually fine-grained and dark granodiorites, which contain a larg...

Silica gel lubrication has been recognized as one of the mechanisms causing coseismic weakening in faults at shallow crustal conditions, but natural examples are scarce (Kirkpatrick et al. 2013, Faber et al. 2014). We present the occurrence of a natural silica gel coating a fault surface of the San Andres fault on El Hierro, Canary Islands. The sha...

Oxide minerals (Nb-Ta-rich rutile, columbite-group minerals and W-bearing ixiolite) represent the most common host for Nb, Ta and Ti in high-F, high-P 2 O 5 Li-mica granites and related rocks from the Geyersberg granite stock in the Krušné Hory/Erzgebirge Mts. batholith. This body forms a pipe like granite stock composed of fine-to middle-grained,...

Uraninite-coffinite vein-type mineralisation with significant predominance of uraninite over coffinite occurs in the Příbram, Jáchymov and Horní Slavkov ore districts and the Potůčky, Zálesí and Předbořice uranium deposits. These uranium deposits are hosted by faults that are mostly developed in low- to high-grade metamorphic rocks of the basement...

A fault slip within the Ñaña tunnel Lima, Peru has been monitored since 2012. The data are recorded using an optical-mechanical 3D extensometer, capable of providing very precise long-term three-dimensional measurements of relative displacement across discontinuities. The Ñaña tunnel has an extremely stable environment and cannot possibly be affect...

Nb-Ta-Ti-bearing oxide minerals (Nb-Ta-bearing rutile, columbite-group minerals, W-bearing ixiolite) represent the most common host in high-F, high-P Li-mica granites from the Geyersberg granite stock in the Krušné hory/Erzgebirge Mts. batholith. The Geyersberg granite stocks forms a pipe like granite stock composed of fine-to middle-grained, porph...

The Krudum granite body comprises highly fractionated granitic rocks ranging from medium-F biotite granites to high-F, high-P2O5 Li-mica granites. This unique assemblage is an ideal site to continue recent efforts in petrology to characterize the role of zircon, monazite, and xenotime as hosts to rare earth elements (REEs). The granitic rocks of th...

The Central European deposits were the first industrially mined uranium deposits in the world. Uranium minerals were noticed by miners in the Ore Mts. area (Saxony, Bohemia) for a long time prior the uranium discovery. The uranium mineral pitchblende was reported from this ore district as early as 1565. Pitchblende was firstly extracted for product...

The Bohemian Massif hosts a significant quantity of uranium deposits bound by brittle shear zones developed in high-grade metamorphic rocks (Rožná, Okrouhlá Radouň, Zadní Chodov and Dyleň) and/or granites (Vítkov II and Lhota). According to the international atomic energy agency (IAEA) uranium deposits classification, these deposits are classified...

The Krudum granite body comprises highly fractionated granitic rocks ranging from medium-F biotite granites to high-F, high-P2O5 Li-mica granites. This unique assemblage is an ideal site to continue recent efforts in petrology to characterize the role of zircon, monazite and xenotime as hosts to REEs. The granitic rocks of the Krudum body analysed...

The Moldanubian batholith represents one of the largest plutonic bodies in the European Variscan belt, which is composed by three main suites: (1) coarse-grained, porphyritic I/S-type biotite granites to granodiorites of the Weinsberg suite, (2) two-mica S-type granites of the Eisgarn suite and (3) fine to medium-grained, I/S-type biotite granodior...

The study has been aimed at experimental assessment of CO2 and CH4 adsorption capacity on seven dark Silurian shale samples from the Barrandian Basin (Czech Republic). Correlations with their petrographic, textural and mineralogical properties were studied for evaluation of the long term CO2 subsurface storage potential, a source of shale gas, and...

High-pressure methane sorption isotherms were measured on seven representative samples of Silurian shales from the Barrandian Basin, Czech Republic. Excess sorption measurements were performed at a temperature of 45 °C and at pressures up to 15 MPa on dry samples, using a manometric method. Experimental methane high-pressure isotherms were fitted t...

New mineralogical data are presented for shear-zone hosted uranium mineralisation from selected uranium deposits that occur in the Bohemian Massif. The uranium mineralisation is in high-grade metamorphic rocks of the Moldanubian Zone and/or in granitic rocks of the Moldanubian batholith and Bor pluton as complex uraninite–coffinite and uraninite–co...

The Bor pluton belongs to the Variscan granitoid plutons of the Moldanubian zone of the central European Variscides. Along with similar granitoid plutons of the western part of the Bohemian Massif (Leuchtenberg, Babylon, Fichtelgebirge), it is close in its composition to low-F biotite granites of the Saxothuringian zone. This paper investigates the...

The Bor pluton belongs to the Variscan granitoid plutons of the Moldanubian zone of the central European Variscides. Along with similar granitoid plutons of the western part of the Bohemian Massif (Leuchtenberg, Babylon, Fichtelgebirge), it is close in its composition to low-F biotite granites of the Saxothuringian zone. This paper investigates the...

The Variscan belt of Europe is one of those orogens, where the geodynamic background of post-collisional high heat flow is most rigorously debated. Voluminous late-stage plutons and associated anatectic crustal domains straddle all the way along the belt from the southwesterly Iberian Massif through the Massif Central to the Bohemian Massif in the...

Metamorphosed and deformed tourmaline-bearing leucogranites with a Cambro-Ordovician formation age are widespread in the Monotonous Group of the Variscan southern Bohemian Massif, Czech Republic. The rocks, known locally as Blaník gneiss, are strongly peraluminous and classify as phosphorus-rich low-T, S-type granite. The magma formed from a metape...

The presence of uranium, with a bulk mass fraction of about 1.5 wt% and radiolytic alterations are a feature of Cenomanian amber from Křižany, at the northeastern edge of the North Bohemian Cretaceous uranium ore district. Pores and microcracks in the amber were filled with a mineral admixture, mainly in the form of Zr-Y-REE enriched uraninite. As...

The granitoids of the Moldanubian Batholith (Moldanubian Zone of the Bohemian Massif) are represented by three main suites: I- to I/S-type Weinsberg biotite granites–granodiorites, S-type Eisgarn two-mica granites and I/S-type Freistadt biotite granites–granodiorites. As shown by major-element data and zircon with monazite saturation thermometry, p...

The South Bohemian batholith The South Bohemian batholith (SBB) is part of the Saxo-Danubian granite belt, a significant part of the Central European Variscan granite suites. It intruded high-grade metamorphic rocks (mainly various types of paragneisses and migmatites) of the Moldanubian Zone. The SBB is a complicated intrusive complex built by man...

The South Bohemian Batholith (SBB) is part of the Saxo-Danubian granite belt, a significant part of the Central European Variscan granite belts. The granitoids of the SBB can be grouped into three main suites: coarse-grained K-feldspar-phyric I/S-type biotite granites of the Weinsberg type, S-type two-mica granites of the Eisgarn type, and younger...

The Bohemian Massif, the easternmost and largest inlier of the Variscan belt in Europe, is a type example of a large hot orogen littered by compositionally diverse plutons. The plutonism spanned the entire, more than 80 My long orogenic history from Late Devonian oceanic subduction through Early Carboniferous microplate collisions to final Late Car...

The term, granitic rocks, is usually used to mean quartz-bearing (> 60 wt. SiO2) plutonic igneous rocks. Examination of most large-scale geological maps showing igneous and metamorphic basement rock series reveals a large number of plutonic bodies of granitic composition. Origin of granitic rocks was studied in various parts of continental crust as...

Argillized granites from the Hub stock contain a clay mineral assemblage formed by dickite, illite, tosudite and smectite. These granites occur in the upper part of the topaz granite stock, immediately beneath topaz-mica greisens consisting of quartz, clay minerals, lithium mica (protolithionite) and topaz. Argillized granites are enriched in Si (u...

The mobility of rare-earth elements (REE), Y and Zr during the Late-Variscan and post-Variscan mineralisation event in the Okrouhlá Radouň uranium deposit has been investigated to elucidate their behaviour during the hydrothermal alteration of leucogranites and high-grade metamorphic rocks in the Moldanubian Zone (Bohemian Massif). The alteration o...

Geology, petrology and geochemistry of granitic rocks from the SW part of the Bohemian Massif.

The Okrouhlá Radouň shear zone hosted uranium deposit is developed along the contact of Variscan granites and high-grade metasedimentary rocks of the Moldanubian Zone of the Bohemian Massif. The pre-ore pervasive alteration of wall rocks is characterized by chloritization of mafic minerals, followed by albitization of feldspars and dissolution of q...

The central European section of the Hercynian orogen, with the Bohemian Massif as the main exposure was intruded by numerous, mainly crustally derived, granitic magmas, associated with penetrative LP-HT regional metamorphism and anatexis. A significant part of this magmatism is formed by Saxo-Danubian granite belt, which consists of granite plutons...

The hydrothermal alteration of granites has large influence on their petrophysical properties. To reveal the impact of alteration on magnetic and porosity properties of granites we have conducted a complex study of effects of two largely independent alteration processes, related to chemically different fluids, in granites of the Vysoký Kámen stock...

The Moldanubian batholith The Moldanubian batholith (MB) is the largest granitoid complex (6000 km 2) within the Bohemian Massif. It intruded high-grade metamorphic rocks (mainly various types of paragneisses and migmatites) of the Moldanubian Zone. The MB is a complicated intrusive complex built by many intrusions of granitoids. These granitoids c...

The Moldanubian Zonc of the Bohemian Massif is the deeply eroded middle crusts with tectonic inter­calations of granulite facies lower crust and minor rnantle rocks. At --330-300 Ma, the Moldanubian Zonc was intruded by large volumes of crustally derived granitoid s of the composíte Moldanubian batholith (MB) (~6,000-10.000 krn2). These granitoids...

Zircon and xenotime, from two mineralogically and chemically contrasting granite suites occurring in the Krušné Hory/Erzgebirge Mts., display extended compositional variability with respect to abundances of Zr, Hf, REE, Y, P, Th, Ca, Al, Fe and As. According to their geochemical signatures, P-rich (S-type) and P-poor (A-type) granites could be dist...

Hydrothermal ore deposits represent a significant type of industrial important U mineralization occurring in highly variable rock environments. These deposits constitute 30% of global U reserves and about 30% of world U production. Hydrothermal U deposits can be grouped in the four main categories based on their geologic setting, namely in vein-lik...

The association of Th, U, Zr, Y, and REE accessory minerals (zircon, monazite,xenotime) in two-mica granites and topaz granites of the Saxo-Danubian granite belt(Central European Hercynides) are discussed. The occurrence of these minerals iscontrolled by the initial trace-element contents of the melt, the aluminous saturationindex, the Ca content,...

Topaz granites are alkali feldspar granites containing albite, quartz, K-feldspar,lithium mica and topaz, which are characterized by their an extreme enrichment in F (upto 4 wt.%), enrichment in Li, Rb, Cs, and also in Sn and W. These granites are usuallysubdivided into P-rich and P-poor subtypes. In the Saxothuringian Zone of the BohemianMassif (C...

Abstrakt The quartz-fl uorite NNW–SSE trending vein mineralization hosted by alkali-feldspar syenites and leucocratic topaz-albite granites of the Vysoký Kámen stock (Krudum granite body) formed from low-salinity (0–5 wt. % NaCl eq.) and low-temperature (Th =90–132 °C) aqueous fluids. Both quartz and fluorite host secondary fluid inclusions which...

The Horní Slavkov–Krásno Sn–W ore district is hosted by strongly altered Variscan topaz–albite granite (Krudum granite body) on the northwestern margin of the Bohemian Massif. We studied the fluid inclusions on greis-ens, ore pockets, and ore veins from the Hub Stock, an apical expression of the Krudum granite. Fluid inclusions record almost contin...

Two-mica granites of the South Bohemian batholith (SBB) represent the most significant rock type of this magmatic body. Three main geochemical two-mica granite types can be distinguished in the SBB: the low-Th Destná granite, the intermediate-Th Mrákotín/Címer granite and the high-Th Lipnice and Steinberg granites. A" these granites were emplaced a...

The South Bohemian batholith The South Bohemian batholith (SBB) is the largest granitoid complex (6000 km 2) within the Bohemian Massif. It intruded high-grade metamorphic rocks (mainly various types of paragneisses and migmatites) of the Moldanubian Zone. The SBB is a complicated intrusive complex built by many intrusions of granitoids of differen...

The Bohemian Massif, a part of the European Variscan belt, hosts a significant proportion of uranium mineraliza-tion bounded on brittle shear zones evolved in high-grade metamorphic rock series and/or in granites. The mobility of REE, Y and Zr during the Variscan uranium mineralization event has been investigated in the Okrouhlá Radouň uranium depo...

The alteration, and greisenization in particular, of topaz-bearing granites is connected with a strong influx of volatile-rich fluids and opening of the geochemical system for many geochemical species. We have conducted a detailed comparative study of rock physical properties on variously altered samples from the Vysoký Kámen Stock (the Krudum gran...

The Bohemian Massif, a part of the European Variscan belt, hosts a significant proportion of uranium mineraliza-tion bounded on brittle shear zones evolved in high-grade metamorphic rock series and/or in granites. The mobilityof REE, Y and Zr during the Variscan uranium mineralization event has been investigated in the Okrouhlá Radouˇnuranium depos...

The alteration, and greisenization in particular, of topaz-bearing granites is connected with a strong influx of volatile-rich fluids and opening of the geochemical system for many geochemical species. We have conducted a detailed comparative study of rock physical properties on variously altered samples from the Vysoký Kámen Stock (the Krudum gran...

he Krudum granite body (KGB) represents a reversely zoned pluton with the oldest, least fractionated biotite granite in the centre, surrounded to the NW by younger topaz-bearing, two-mica granite. The youngest, topaz­albite granite forms the outermost shell. From geochemical point of view, all these rock types are subaluminous to strongly peralumin...

he Krudum granite body (KGB) represents a reversely zoned pluton with the oldest, least fractionated biotite granite in the centre, surrounded to the NW by younger topaz-bearing, two-mica granite. The youngest, topaz­albite granite forms the outermost shell. From geochemical point of view, all these rock types are subaluminous to strongly peralumin...

Nb-Ta-Ti-bearing oxide minerals (Nb-Ta-bearing rutile, columbite-group minerals) represent the most common Nb-Ta host in topaz-albite granites and related rocks from the Krásno-Horní Slavkov ore district. Tungsten-bearing columbite-(Fe), W-bearing ixiolite, wodginite and tapiolite-(Fe) are extremely rare in these rocks. Rutile contains significant...

Niobium-and tantalum-bearing oxide minerals are common in topaz granites and related rocks. The most common Nb-Ta-bearing minerals in these parageneses are Nb-Ta-bearing rutile and columbite-group minerals (CGM). Topaz-bearing granites of the Krušné Hory/Erzgebirge area Topaz-bearing granites form two distinct magmatic suites in the Krušné Hory/Erz...

Niobium- and tantalum-bearing oxide minerals are common in topaz granites and related rocks. The most common Nb-Ta-bearing minerals in these parageneses are Nb-Ta-bearing rutile and columbite-group minerals (CGM). These minerals were detailed studied in Krásno-Horní Slavkov, Geyer, and Ehrenfriedersdorf ore districts. Topaz-bearing granites form tw...

The South Bohemian batholith The South Bohemian batholith (SBB) is the largest granitoid complex (6000 km 2) within the Bohemian Massif. It intruded high-grade metamorphic rocks (mainly various types of paragneisses and migmatites) of the Moldanubian Zone. The SBB is a complicated intrusive complex built by many intrusions of granitoids of differen...

The South Bohemian Batholith (SBB) is the largest granitoid complex (6000 km2) within the Bohemian Massif. It intruded high-grade metamorphic rocks (predominantly various types of paragneisses and migmatites) of the Moldanubian Zone. Two-mica granites represent the most significant rock type of this magmatic body. Three main geochemical two-mica gr...

Introduction The processes controlling rare earth element (REE) behaviour during origin of S-type granite melts have profound implications for REE abundances in these granites. For typical protoliths of these granites, such as are metapelites of the Moldanubian Zone, a high amount of bulk rock LREE are sited in monazite and of HREE in garnet, apati...

The processes controlling rare earth element (REE) behaviour during origin of S-type granite melts have profound implications for REE abundances in these granites. For typical protoliths of S-type two-mica granites, such as are metapelites of the Moldanubian Zone from the Bohemian Massif (Central European Variscides), a high amount of bulk rock LRE...

The Horní Slavkov ore deposit is one of the important occurrences of Sn-W mineralization bound to greišenized apical parts of the Variscan granitoid plutons ln the Saxothuringian Zone of the Bohemian Massif. There is developed a number of post-magmatic alterations in topaz­alkali feldspar granites of the Krudum granite body (age of ca. 330 Ma) in t...

The Horni Slavkov ore deposit is one of the important occurrences of Sn-W mineralization bound to greisellized apical parts of the Variscan granitoid plutons in the Saxothuringian Zone of the Bohemian Massif. There is developed a number of post-magmatic alterations in topaz alkali feldspar granites of the Krudum granite body (age of ca. 330 Ma) in...

Topaz-bearing leucogranites represent a clan of highly differentiated rocks that often contain economically significant concentrations of incompatible elements (Rb, Li, Cs, Sn, Nb, Ta, and W) but whose origin remains largely enigmatic. As a target of our complex study was chosen the Krudum granite body (KGB, c. 50 km2), a subsidiary intrusion of th...

Topaz-bearing leucogranites represent a clan of highly differentiated rocks that often contain economically significant concentrations of incompatible elements (Rb, Li, Cs, Sn, Nb, Ta, and W) but whose origin remains largely enigmatic. As a target of our complex study was chosen the Krudum granite body (KGB, c. 50 km 2), a subsidiary intrusion of t...

An assemblage of Al-low titanite and ilmenite is present in Ti-rich microgranodiorites intruded in the Moldanubian Zone of the Bohemian Massif. Titanite is characterized by coupled substitution (Al, Fe 3+) + (F, OH) ⇔ Ti +O, with a slight excess of (Al, Fe 3+)-OH component over of (Al, Fe 3+)-F component. Ilmenites have FeTiO 3 amount between 86 an...

The Bavarian Zone of the south-western Bohemian Massif is a late Variscan high heat-flow region, characterized by numerous granite intrusions and large amounts of LP-HT anatectic rocks, the latter comprising meta- and diatexites derived from sedimentary and igneous protoliths. Imaging and SIMS U-Pb dating of zircon from a distinctive type of hornbl...

Geological position The Moldanubian (South Bohemian) batholith is the largest granitoid complex (6000 km 2) within the Bohemian Massif. It intruded high-grade metamorphic rocks (mainly various types of paragneisses and migmatites) of the Moldanubian zone. The SBB is a complicated intrusive complex built by many intrusions of granitoids of different...

The Moldanubian (South Bohemian) batholith is the largest granitoid complex (6000 km") within the Bohemian Massif. It intruded high-grade metamorphic rocks (mainly various types of para gneisses and migmatites) of the Moldanubian zone. Granitoids of the Sumava Mts., which are part of western branch ofthe Moldanubian batholith, form a lot of rela ti...

Geological position The Moldanubian (South Bohemian) batholith is the largest granitoid complex (6000 km 2) within the Bohemian Massif. It intruded high-grade metamorphic rocks (mainly various types of paragneisses and migmatites) of the Moldanubian zone. The SSB crops out in the area between Jihlava in the north and the Danube river in the south....

Two-mica Variscan granites of the Moldanubian (South Bohemian) batholith represent the most significant rock type of this magmatic body. Three main geochemical two-mica granite types can be distinguished in the SBB: the low-Th Deštná granite, the intermediate-Th Eisgarn granite and the high-Th Lipnice and Steinberg granites. All these granites were...

Topaz granites form two distinct magmatic suites in the Saxothuringian Zone in the Bohemian Massif. The first suite is formed by high-P (>0.4 wt% P 2 O 5), highly evolved S-type granites. High-P topaz granites occur in granite stocks of the western part of the Saxothuringian Zone (Horní Slavkov-Krásno and Ehrenfriedersdorf ore districts). The secon...

Accessory minerals in F-rich granites of the Krušné Hory Mts./Erzgebirge batholith.

Titanium-rich biotite from granodiorite belonging to redwitzite suite of the Slavkovský les Mts. alters to mixture of low-Al titanite, Mn-enriched ilmenite, REE-fluorocarbonate (parisite) and very fine-grained mixture of chlorite and clay minerals. Titanite consists from 1.1 to 2.3 wt. % Al 2O 3 and from 0.4 to 1.0 wt. % Fe 2O 3. Titanite shows som...

The Saxothuringian Zone is one of the most significant metalogenetic provinces with a huge occurrence of two distinct topaz granite suites. First suite is formed by high-P (>0.4 wt% P 2 O 5), highly evolved S-type granites. High-P granites occur in stocks of the western part of the Saxothuringian Zone (Horní Slavkov-Krásno and Ehrenfriedersdorf ore...

The Saxothuringian zone of the Central European Variscides is one ofthe most significant metalogenic provinces with a huge occurrence oftwo distinct topaz granite suites. First suite is formed by high-P (> 0.4 wt% Pps)' highly evolved S-type granites. High-P topaz granites occur in granite stocks of the western part ofthe Saxothuringian zone (Horní...

Redwitzites oeeur as small irregular bodies of py­roxene- amphibole and biotite-amphibole-pyroxene gabbrodiorites and diorites in the Kynžvart Spa area. In the Horní Slavkov ore distriet and in environs of Bečov this suite oecurs as dykes and small bodies of biotite granodiorites, tonalites, biotite-amphibole dior­ites and quartz diorites. Along we...

The Bavarian Zane in the south-western Bohemian Massif (FtNGER et al. 2007) is characterized by nu­merous S-type and high-Kp I-type granite intrusions, interspersed with large amounts of LP-HT anatectic rocks (meta-and diatexites derived from various meta­sedimentary and igneous protoliths). In this part ofthe Bohemian Massif, mid-crustal anatexis...