Acta Musei Moraviae

Andradite-meionite-pyroxene rock in amphibolite from the contact of corundum pegmatite at Pokojovice, Moldanubian Zone, Western Moravia Andradite-meionite-clinopyroxene rock represents one of the host rocks of known corundum pegmatite at Pokojovice (near Třebíč, Western Moravia). It forms layers in the amphibolite body, which together with quartzites, ultrapotassic leucocratic gneisses, marbles and...

Corundum-bearing pegmatite from Pokojovice near Třebíč, Czech Republic The Pokojovice corundum-bearing pegmatite is found in the varied group of Moravian Moldanubicum. It forms a discordant dike, up to 2 m thick, penetrating amphibolite with thin layers of calcite marble, and skarn-like rocks. The pegmatite is composed of three different units:...

Dolomite marbles at contact of the Moldanubicum and Moravicum in the area between Jasenice and Oslavany Dolomite marbles at the contact of the Moldanubicum and Moravicum in the area between Jasenice and Oslavany were studied. The observed mineral assemblages, metamorphic zonality, chemical composition of dolomite marbles and lithostratigraphy of the...

Calcite-andradite microclinite from Markvartice near Třebíč, western Moravia In the paper submitted, the basic geological, petrological and mineralogical data about calcite-andradite microclinites at Markvartice are presented. These rocks are a part of the Varied Group of the Moravian Moldanubicum and originated by metasomatism of gneisses and marbles along the tectonic...

A new lepidolite pegmatite from Sedlatice near Želetava, western Moravia A new lepidolite pegmatite was found N of Sedlatice in western Moravia. The pegmatite of unknown shape and size is emplaced in sillimanite – biotite paragneiss with amphibolite. Based on mineral paragenesis, it corresponds to the lepidolite subtype of complex...

Geological maps of Silesia and Kłodzko by Augustin Kaluža from 1818 Geological maps of Silesia and Kłodzko, authored by Augustin Kaluža, are among the oldest geological maps in Central Europe. They are a set of four maps, which are an appendix to Kaluža’s work from 1818 with title “Overview of...

Research of Permian-Carboniferous sediments of the southern part of the Boskovice Graben; an overview (Part 2. Geology and Petrography). An overview of geological and petrologic research of the southern part of the Boskovice Graben summarizes the knowledge and points out an attention to some unsolved problems. Basement of the Boskovice...

Silver-bearing Pb-Zn mineralization along eastern border of Moldanubian Pluton near Telč Multiple occurrences of base-metal mineralization in massive and brecciated quartz veins are present along the eastern border of Central Moldanubian Pluton (CMP). The veins cross-cut the contact of CMP granites as well as surrounding cordierite-biotite migmatites of the Monotonous...

Ferrobustamite-bearing magnetite skarn in marble at Sokolí near Třebíč (Moldanubian zone, Western Moravia) Ferrobustamite was found in Fe-skarn at Sokolí and it is the first known occurrence in the Bohemian Massif. The skarn forms layer in marble enclosed in leucocratic migmatites (diatexites). Ferrobustamite (Ca4.58–4.70 Mn0.14–0.20 Mg0.01–0.13)5 Fe0.95–1.6 Si5.86–6.01 O18) forms...

Hydrothermal silver-bearing Pb-Zn mineralization in Moldanubian Pluton near Dačice and Slavonice Small deposits of silver-bearing base-metal ores have been mined in the past along the eastern margin of Central Moldanubian Pluton, especially in the 16th century. However, their production was insignificant, and there was not much information about mining at...

Chromium rich spinels of Upper Carboniferous Balinka conglomerates from south part of Boskovice Graben Balinka conglomerates formed the basal Upper Carboniferous sedimentation of Boskovice Graben and locally contain light-green fine-grained aggregates of Cr-mica and clay minerals. During the study of these phyllosilicates, relicts of Cr-rich spinel were found. Cr-rich spinel...

Research of Permo-Carboniferous sediments of the southern part of the Boskovice Graben; an overview (Part 1. History of Mining and Mineralogy) The Boskovice Graben represents a narrow depression of the NNE-SSW direction, filled of terrestrial Carboniferous-Permian sediments largely conglomerates and sandstones, less commonly also claystones, aleuropelites and minor pelocarbonates. Some...

Cathodoluminescence study, Petrography and Lithology of Marble in Moravicum (Bílý Potok Unit, Svratka Dome, Bohemian Massif) The contact of the Bílý Potok and Bíteš Units (Svratka Dome, Moravo-Silesian Zone) is characterized by presence of marble in the highest lithostratigraphic part of the phyllite complex of the Bílý Potok Unit. The...

Large almandine porphyroblasts from Senorady, western Moravia Large garnet crystals (porphyroblasts) occur in migmatized biotite paragneiss near Senorady (Moldanubian Zone, Western Moravia). In their chemical composition prevails almandine komponent (Alm68–72 Sps3–10 Prp16–22 Grs0–6 Adr1–6). Only weak diffuse zonation (Mn-rich core and Mg-rich rim) and inclusions of quartz, ilmenite, apatite and...

Pocket minerals from simple pegmatites and associated muscovite veins of Strážek Moldanubicum (Bohemian Massif, Czech Republic) Simple anatectic pegmatites with common pockets lined with crystals of smoky quartz, K-feldspar, albite, muscovite, zoned black tourmaline (schorl, oxy-schorl, foitite, dravite, magnesio-foitite) and common to rare accessory minerals – fluorapatite, garnet, cordierite to...

Green chromium-bearing mica in Balinka Conglomerates of Rosice-Oslavany Formation (Upper Carboniferous) at Oslavany Clasts of light-green mica containing chromium were recorded in the Upper Carboniferous conglomerates at Oslavany (Rosice-Oslavany Coalfield, Boskovice Graben). It is a potassium-deficient muscovite to illite (0.514–0.912 apfu K) with 0.88–2.29 wt. % Cr2O3 (0.046–0.119 apfu Cr)....

Mineral assemblage and chemical composition of Mg-wolframite and scheelite from Cetoraz by Pacov, Czech Republic Magnesium-bearing wolframite was analysed from the occurence near Cetoraz by Pacov. It forms grayish to black crystals up to 10 cm and irregular grains of various size. Wolframite composition is dominated in ferberite with average...

Silver and gold in galena ores from base-metal vein deposits in Bohemian Moravian Highlands Galena-rich ores from vein base-metal deposits in the Bohemian-Moravian Highlands were analyzed for Ag and Au. Relatively high quality of ores was confirmed in the Havlíčkův Brod ore district with contents of Ag exceeding 1000 ppm...

Mineralogy of magnetite-grunerite-siderite ores in Radoškov (Bílý potok Unit, Svratka dome, Moravicum) Metamorphic iron mineralization was documented in an abandoned adit east of Radoškov, Czech Republic. Siderite-rich ore with magnetite, amphibole asbestos, chlorite and small amounts of pyrite occur in chlorite-muscovite and muscovite-biotite phyllites (Svratka Dome, Moravicum). Siderite associated with...

Mineralogically remarkable lamproite occurrence in the Třebíč Pluton at Střítež near Třebíč A new occurrence of a mafic dyke was recognised along the eastern termination of the Moldanubian zone at Střítež near Třebíč (western Moravia, Czech Republic), where crosscuts melanocratic amphibole-biotite granosyenite (durbachite) of the Třebíč Pluton. The studied rock...

Topography of historical mines and ore mineralizations in area of the Bílý potok, Western Moravia Remnants of historical mines for iron- and base-metal ores were re-investigated among villages Javůrek, Maršov, Svatoslav, Přibyslavice and Lesní Hluboké, in area 20 km NW from Brno (Czech Republic). The mines are situated at the...

Wolframite from heavy-mineral assemblages at Trucbába – Valcha, Moldanubicum Magnesium-rich wolframite from stream sediment in Trucbába – Valcha locality (Humpolec area) was found. It forms sporadic black grains among ilmenite, magnetite, monazite-(Ce), xenotime-(Y), scheelite, garnet, rutile, zircon, apatite, sillimanite, tourmaline, cassiterite and gold in the heavy-mineral concentrates. In the wolframite...

Native silver from Borovec (Štěpánov ore district) Silver mining activities at Štěpánov ore district date back to 13th century. Besides the major ore minerals, the silver-bearing galenite with inclusions of freibergite, and the silver-bearing chalcopyrite, rare presence of native silver was encountered on dumps close to the shallow shaft Josef...

Accesory schreyerite in vanadium-rich graphite quartzite at Bítovánky (Moldanubicum, western Moravia) A new occurrence of schreyerite was found in graphite quartzite near Bítovánky, in the south-eastern part of the Moldanubian zone (Bohemian Massif). It forms thin lamellae and grains intergrown with vanadium-rich rutile (0.044–0.058 apfu V) and isolated microscopic grains,...

Lithium tourmalines from the lepidolite pegmatite at Sedlatice near Telč (Moldanubicum, western Moravia) The lepidolite-subtype pegmatite at Sedlatice features simple mineralogy with garnet, apatite, tourmaline, andalusite, cordierite?, cassiterite, manganocolumbite, zircon and topas as accessory phases. Tourmaline is represented by common schorlitic tourmaline, with rare thin rims of green tourmaline (verdelite)....

Recent efflorescences of Fe sulphates in a waste piles at Dlouhá Ves near Havlíčkův Brod (Czech Republic) The water-soluble sulfates: rozenite, melanterite, halotrichite, gypsum, rhomboclase, epsomite and alunogen were found in the waste piles of polymetal deposits in Dlouhá Ves near Havlíčkův Brod (Czech Republic). Ferrous sulfates, which are stable...

New minerals found in regions of Moravia and Silesia between 1985 and 2009; a review Since the last topographic mineralogy review in 1985, the number of mineral species described from Moravia and Silesia rose significantly, especially due to more freqent use of advanced analytical techniques, e.g. EMP or powder XRD....

Geikielite-baddeleyite in mineral assemblage of dolomite marbles from the contact aureole of the Třebíč Pluton (Moldanubian zone) Within the inner part of metamorphic aureole of the Třebíč Pluton, geikielite-ilmenite and baddeleyite occur as accessory minerals in spinel-forsterite marbles. The most abundant is geikielite (or Mg-ilmenite) which forms opaque grains up...

Primary gold mineralization from Hory near Předín, western Moravia In the Předín ore district, gold was exploited between 13th and 16th century. Gold-bearing quartz veins penetrate Moldanubian sillimanite-biotite gneisses and quartzites at three sites near Hory village (localities “Štůlně”, “Malý Štítek” and “Zákopy”). The Předín district is characterized by simple...

Pyromorphite from Jihlava ore district (Czech Republic) The supergene mineral assemblage of the Jihlava district, where Pb-Zn-Ag ores were exploited in the medieval age, is characteristic by pyromorphite occurrences. Pyromorphite forms yellow-green to green hexagonal crystals up to 1 cm in size and sometimes also brown or white, needle-like aggregates...

The mineral assemblages at the abandoned burning spoil-heaps in the Rosice-Oslavany Coalfield, Czech Republic Mineral assemblages formed recently at the abandoned burning spoil-heaps of the Kukla coal mine in Oslavany and Ferdinand coal mine in Zastávka. They originated in three stages. Pyrometamorphic stage I Tmax >1 100 °C produced hematite,...

Nordenskiöldine CaSnB2O6 from the locality Kozlov near Nedvědice, new rare accessoric mineral for Nedvědice marbles Very rare mineral of Europe – nordenskiöldine CaSnB2O6 – was found in Sn-rich calc-silicate assemblage (tin skarn) of Nedvědice marbles near Kozlov (4 km N from Nedvědice, western Moravia). It forms rare euhedral grains approx....

Zirconolite in marble at Krahulov and age of HT/LP metamorphism in the contact aureole of the Třebíč Pluton (Moldanubian zone) Regional-scale contact metamorphism of the Třebíč Pluton led to the formation of distinct zoning manifested typically in dolomite marbles. Inside part of metamorphic aureole appears rare zirconolite as an accessory...

Contribution to the knowledge of provenance of pebbles from the Upper Viséean conglomerates in the Drahany Hights: VI. – Skarnoid. The pebble of leucocratic biotite migmatite (plagioclase >> K-feldspar) with a small nodule of skarnoid rock (garnet+amphibole+magnetite+quartz) was found at locality Račice, Luleč conglomerates, Drahany Hights. Minerals from both rocks...

Illusion known as „Czech Crater“ (book review) The book “Czech Crater” from Petr Rajlich represents a new manipulative and highly speculative type of geological literature in Czech Republic. Without any real evidence, the author presents imaginary Proterozoic impact producing “Czech Crater” of 290×240 km in diameter. The book commonly ignores...

Mineralogy, petrography and geology of the Nedvědice marbles, Svratka Crystalline Complex; a review Nedvědice marbles occur in a narrow belt situated along the eastern and northeastern margin of the Svratka Crystalline Complex (Moldanubian Zone). Elongated bodies of calcite marbles up to 150 m long and 40 m thick, with abundant...

Granitic NYF pegmatites of the Třebíč Pluton (Czech Republic) Homogeneous segregations to complexly zoned dikes of granitic pegmatites, up to 2 m thick, are enclosed in Hercynian (ca. 340 Ma), I-type, ultrapotassic, porphyric, amphibol-biotite melasyenite to melagranite (durbachite) of the Třebíč Pluton (TP), Moldanubicum, western Moravia, Czech Republic. They typically...

Moldavite-bearing sediments near Lukov in the vicinity of Moravské Budějovice, Western Moravia Between 1998–2005 several moldavites have been collected in two new localities near Lukov. They are olive-green in colour and have angular to subangular shape with lustrous and mat surface. The chemical composition of one sample shows similarity to...

Tourmalinites from the southern part of Svratka Crystalline Complex Tourmalinites from the southern part of the Svratka Crystalline complex form stratiform layers hosted in mica schist. They probably represent a part of metamorphosed volcano-sedimentary complex primary rich in F and B. Whole rock composition of tourmalinites is close to the...

Muscovite-plagioclase layers in dolomite marble near Prosetín (Olešnice Unit, Moravicum) concordant injections of aplite or metaevaporites? Layers of concordant muscovite-plagioclase rock are enclosed in dolomite marble near Prosetín (Olešnice unit, Moravicum). These rocks were previously interpreted as strongly altered injections of silica-poor aplites (oligoclasites). Muscovite-plagioclase rock is white, fine-grained, composed...

Hydromagnesite, brugnatellite and coalingite in mineral assemblage of fissures in serpentinite, quarry „U Pustého mlýna“, Hrubšice, Moldanubian zone, western Moravia Low-temperature fissure mineralization was found in the quarry “U Pustého mlýna” (the Hrubšice serpentinite body, Moravian Moldanubicum). It is formed by rare Mg-, Mg–Fe-hydrocarbonate minerals (hydromagnesite, artinite, brugnatellite, coalingite), followed...

Zirconolite, baddeleyite and geikielite in clinohumite-spinel-forsterite marbles near Horažďovice and Prachatice in southwestern Bohemia Zirconolite, baddeleyite and geikielite are described from two localities in marbles of the Horažďovice-Sušice belt in SW Bohemia and another localities near Prachatice in southern Bohemia. All the localities belong to the Varied Group, Moldanubian Zone....

Supergene minerals from Ag-Pb-Zn-Cu base-metal historical ore deposits at Českomoravská vrchovina Highlands, Czech Republic; A review The work presents a brief characterization of the known oxidic minerals of the supergene zone, especially from Moldanubian Zone, Moravosilesian, Bohemian Massif. Simple ore mineralizations consist predominantly of pyrite, sphalerite, galena, arsenopyrite, and also...

Unique chondrodite-bearing mineral assemblage in marble at Bílá Hill near Čechočovice (western Moravia) In the large body of pure calcite marble in the biotite paragneiss of Moldanubicum very rare chondrodite was found. It occurs in narrow limited layer of marble low in dolomite and silicate grains (<1 vol%) in assemblage...

REE-bearing marble from Horní Dunajovice (Lukov Unit, Moravicum) in Western Moravia REE-bearing calcite marble forms a layer in biotite phyllites near H. Dunajovice in the Lukov Unit of Moravicum. Chemical compositions of the iron- and phyllosilicate-rich marbles and description of rare carbonate synchysite-(Ce) are presented. Enrichment of REE in marble...

Cl-rich hydroxylellestadite from Zastávka near Brno At burning mine dumps of abandoned mines at Zastávka near Brno (southern Moravia), Czech Republic, was found mineral from the ellestadite group – Cl-rich hydroxylellestadite. It forms rare pale blue transparent acicular crystals, up to I mm in length, and rich bright blue fine-grained...

Mineral assemblages involving vesuvianite from carbonate and calc-silicate rocks in Moravia and Silesia Mineral assemblages and chemical composition of vesuvianite were studied at localities in Moravia and Silesia, Czech Republic. Five distinct rock types were distinguished: (i) reaction zones on the contact of marble and metamorphic rock with contrasting chemical...

Almandine quartzite from Chotěbudice near Jemnice, western Moravia Almandine-rich quartzite with accessory gahnite was found SW of Chotěbudice near Jemnice in Western Moravia. A description of the mineral assemblage as well as a brief comparison with other quartzites in Western Moravia are given....

Distribution of tremolite marbles in the Bohemian massif Tremolite marbles with abundant, large porphyroblasts of dark to light gray tremolite represent a specific lithotype of marbles in some crystalline complexes of the Bohemian Massif. They are typically located in the geological units overlying the units with at least Proterozoic age....

Segnitite from Štěpánov nad Svratkou, western Moravia Rare Pb-Fe arsenate segnitite was found among supergene minerals from Ag-Pb-Zn deposit Havírna near Štěpánov nad Svratkou, western Moravia. The X-ray powder diffraction pattern, unit cell parameters and chemical composition are given....

Contribution to the knowledge of provenance of pebbles from the Upper Viséean conglomerates in the Drahany Uplands: I. Graphitic quartzite with vanadium-bearing muscovite The pebble of graphitic quartzite with vanadiurn-bearing muscovite from locality Podivice, Luleč conglomerates, Drahany Uplands was studied using various mineralogical, petrological and geochemical methods. Mineral assemblage, chemical...

Pb-Zn mineralization near Horní Loučky in vicinity of Tišnov Pb-Zn mineralization Horní Loučky near Tišnov is described. Simple mineral assemblage with sphalerite and galena is disseminated in quartzite, which replaced of marbles of the Olešnice Unit, Moravicum....

Barium phlogopite and kinoshitalite-bearing mineral assemblage of forsterite marbles from Rožná uranium deposit, Moldanubicum, western Moravia Ore-bearing dolomite marbles with rare Ba-micas (kinoshitalite, Ba-phlogopite) were studied in uranium deposit Rožná. Mineral assemblage, chemical composition of minerals and metamorphism of marbles are presented....

Mineralogy, ore deposit situation and history of the Štěpánov ore district in the Western Moravia The Štěpánov ore district produced Ag, Pb and Cu ore since half of 13th century, Two types of silver-bearing polymetallic mineralization in the surroundings of Štěpánov nad Svratkou in the NW part of Svratka Dome...

Allanite and its alteration products from pegmatite and skarn near Rešice, Western Moravia, Czech Republic Allanite-(Ce) occurs in pyroxene (± garnet; plagioclase) skarn and in pegmatite dykes cutting regionally metamorphosed iron skarn body near Rešice. The results of microscopic study and microprobe analyses of allanite and its alteration products (parisite,...

Contribution to the knowledge of provenance of pebbles from the Upper Viséean conglomerates in the Drahany Uplands: II. Calcite marbles The clasts of three distinct types of calcite marbles were distinguished in the Luleč conglomerates, Drahany Uplands: graphite-bearing, (i) silicate-poor and (ii) silicate-rich calcite marbles, and (iii) graphite- free, silicate-poor...

Mineralogy, petrography and history of the classical lepidolite pegmatite occurrence in Rožná near Bystrice nad Pernštejnem, western Moravia; an overview The Rožná pegmatite, a classical Moravian locality studied from the 18th century, is located in the north – easternmost part of the Strážek Moldanubicum, along the contact with the Svratka...

Moldavite from Moravské Bránice (Moravia, Czech Republic) Moldavite was found in Moravské Bránice near Brno. On the basis of the chemical composition, it corresponds to the ferrous moldavites. Shape and surface of moldavite as well as geological position of the new occurrence are discussed....

Evolution of chemical composition of tourmaline from the peraluminous orthogneisses from Olešenka, NE Moldanubian unit Medium-grained porphyroclastic, garnet-biotite to biotite-muscovite orthogneiss with tourmaline from Olešenka consist of quartz, K-feldspar (P up to 0.02 apfu and Na up to 0.14 apfu), plagioclase (An7–9) and small amount mafic minerals. Biotite (Al 3.52–3.76...

Chromium-bearing spinel – illite mineral assemblage in quartz rock from Radňoves near Křižanov (Gföhl Unit, Moldanubian Zone, Bohemian Massif) Fine-grained quartz rock was found near the southern contact of the garnet-spinel-orthopyroxene serpentinized peridotite body enclosing in the granulites and gneisses of the Gföhl unit (Moldanubian Zone). It is regularly grained,...

Corroded garnets in the association of heavy minerals of Balinka conglomerates: their morphology and chemical compositon (Upper Carboniferous, Boskovice Basin) Two populations of garnet with oriented corroded surfaces were found in the assemblage of the heavy minerals of the Upper Carboniferous Balinka conglomerates at the base of the sedimentary formation...

Characterization of pseudofulgurite from Žatčany near Brno, Czech Republic Pseudofulgurite from Žatčany near Brno originated after a fall of high voltage cables (22 kV) at several intermittent places where they touched the ground (partly anthropogenic loam-sandy sediment with gravel admixture). Branched, tubular and irregular aggregates, up to 10 cm in...

Provenance of gold in fluvial sediments from the streams situated northwest of the Brno-Žebětín (Moravia, Czech Republic) The main purpose of this paper was to study the heavy minerals and typomorphic features of placer gold in the central part of the Brno Massif (Brunovistulian Unit, Bohemian Massif). Placer gold occurrences...

Mineralogy of titanite-rich nodules from biotite granite of Tábor Pluton (Moldanubicum, Dražičky near Tábor quarry, Central Bohemia) The elongated body of biotite granite with titanite-rich nodules is situated on the contact of amphibole-biotite and amphibole-pyroxene melasyenites of the Tábor pluton. Titanite-rich nodules are spherical, 1 to 3 cm in diameter...

Mineralogy of massive serpentine and clinochlore from the dolomitic marble of Moldanubicum in West Moravia (Bohemian Massif) Massive aggregates of yellow-green, grey-green and brown Mg-rich phyllosilicates occur in dolomite marbles enclosed in Moldanubian gneisses and especially migmatites (Bohemian Massif). Serpentine subgroup minerals and Mg-chlorites were distinguished on the basis of...

...from a remote source at the rim of the Jihlava Graben in the Early Permian. The postorogenic hydrothermal alteration of the Stříbrné Hory conglomerates was associated with a transten sion event ~270 Ma. The paper was written on request and in memory of † Stanislav Houzar and † Jaroslav Havlíček....