Acta Musei Moraviae

Bazzite Be3Sc2Si6O18 from the locality Kožichovice II, new mineral for NYF pegmatites of the Třebíč Pluton, Czech Republic Bazzite was identified using electron microprobe as very rare secondary phase after primary beryl at euxenite-subtype pegmatite Kožichovice II. Small elongated euhedral crystals, up to 50 μm long, occur in thin vein...

Granitic pegmatites of the Bohemian Massif (Czech Republic); mineralogical, geochemical and regional classification and geological significance Granitic pegmatites of the Bohemian Massif, Czech Republic were classified based on their geological position, chemical composition and mineralogy. The current classification (Černý 1991a) was modified due to a wide spectrum of examined pegmatitic...

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...

Metamorphism of dolomitic rocks at the north-eastern margin of the Moldanubicum, western Moravia, Czechoslovakia Mineral relations in dolomitic rocks of the Strážek Moldanubicum and Svratka crystalline complex confirm their polymetamorphic origin. The oldest metamorphism M 1, characterized by the equilibrium assemblage Phl+Tr+Cal+Dol, is widespread along the whole area studied and...

Relations of the muscovite pegmatites to the geophysical fields in the area of the Hrubý Jeseník Mts., Czechoslovakia Relations between occurrences of the muscovite pegmatites (beryl-columbite subtype) and geophysical fields in the area of the Hrubý Jeseník Mts. have been discussed. The large negative gravity anomaly situated in the area...

Metamorphosed carbonate rocks at the north-eastern margin of the Moldanubicum Metamorphosed carbonate rocks (marbles) were studied in the north-eastern margin of the Moldanubicum in the regions of the Strážek Moldanubicum, Svratka crystalline complex and Polička crystalline complex. On the basis of their geological setting, lithology, mineral assemblages and chemical composition...

W-, Nb-, Ta-, and Fe-rich brookite from pegmatite near Bobrůvka, Strážek Moldanubicum (Bohemian Massif, Czech Republic) Anatase, brookite, and rutile have been identified in small cavities along with albite, muscovite, tourmaline (Mg-rich schorl) and fluorapatite in pegmatitic material stored in the depositories of the Moravian Museum in Brno and originating...

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...

Granitic NYF pegmatites in the Velké Meziříčí region, Třebíč Pluton, western Moravia (Czech Republic) Detailed field work on NYF granitic pegmatites (Kfs + Plg + Qz + Ab + Bt) enclosed in syenite (to melagranite) of the Třebíč Pluton within the area of Velké Meziříčí revealed existence of several distinct...

Lithium-bearing micas from elbaite-subtype pegmatites in the Western Moravia, Czech Republic Lithium-bearing micas from elbaite-subtype pegmatites of the Moldanubian Zone, western Moravia were examined using electron microprobe and the contents of Li2O were calculated (method of TISCHENDORF et al. 1997). Very rare to minor Li-bearing micas occur in albite unit...

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....

New occurrence of grandidierite, ominelite, boralsilite and Fe-rich werdingite in Horní Bory, Czech Republic – overview A new occurrence of four anhydrous borosilicates (grandidierite, ominelite, boralsilite, Fe-rich werdingite) was found in Horní Bory quarry, Bory Granulite Massif, Moldanubicum, Czech Republic. The borosilicates were found associated with dumortierite, tourmaline and corundum....

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...

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...

Hydroxylherderite and associated beryllophosphates from pegmatite Rožná-Borovina In lepidolite pegmatite Rožná, hydroxylherderite was known since 1950 in pseudomorphs after unknown mineral of pseudocubic shape and the original mineral remained unknown up to now. New samples available for this study confirmed rather monoclinic symmetry. Recent study of this material (powder X-ray...

Demesmaekerite from uranium deposit Zálesí in the Rychlebské hory Mts. (Czech Republic) A rare secondary mineral demesmaekerite Pb2Cu5(SeO3)6(UO2)2(OH)6 . 2H2O was newly found on the old dumps of Pavel vein at the abandoned uranium deposit of Zálesí in Rychlebské hory Mts. Demesmaekerite forms light green compact aggregates up to 1...

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...

Composition of vesuvianite from skarnoid from Moravské Bránice (Moravosilesian Zone) Study of long-prismatic vesuvianite-group minerals from skarnoid at the locality Moravské Bránice using the electron microprobe and LA-ICP-MS (laser ablation mass spectrometry with inductively coupled plasma) provided new results on its chemical and trace-element composition. Four texturally-paragenetic types of vesuvianite...

Dumortierite and tourmaline from abyssal pegmatites at Vémyslice near Moravský Krumlov, Gföhl unit, Moldanubicum Abyssal pegmatites with dumortierite and tourmaline cut biotite-sillimanite gneiss at Vémyslice near Moravský Krumlov, Gföhl Unit. Pegmatites are highly peraluminous, characterized by presence of dumortierite and sillimanite, and tourmaline and andalusite, respectively. Dumortierite is enriched in...

Accessory Nb, Ta, Ti-oxide minerals from a pegmatite at uranium mine Drahonín, Strážek Moldanubicum Zoned granitic pegmatite from uranium mine Drahonín, Strážek Moldanubicum with muskovite, biotite, tourmaline and sekaninaite contains accessory Y+REE, Nb, Ta, Ti-oxide minerals. They consist of finegrained mixture of minerals of samarskite group, pyrochlore group, scheelite, uraninite,...

Secondary minerals from uranium deposit Jelení vrch near Horní Hoštice in the Rychlebské hory Mts. (Czech Republic) Ten secondary minerals as: anglesite, carbonate-hydroxylapatite, hemimorphite, kasolite, langite, mottramite, parsonsite, pyromorphite, uranophane-beta and vanadinite were newly found on the dumps of uranium deposit Jelení vrch near Horní Hoštice in Rychlebské hory Mts....

Lepidolite pegmatite from Dobrá Voda near Velké Meziřící, western Moravia Lepidolite pegmatite from Dobrá Voda is located in the southeastern part of the Strážek Moldanubicum, close to the contact with the Třebíč Durbachite Massif. Pegmatite forms a symmetrically zoned, steeply dipping dike, up to 6 m in width and about...

Hurlbutite from beryl-columbite pegmatite at Kostelní Vydří near Telč, western Moravia New occurrence of hurlbutite from beryl-columbite pegmatite at Kostelní Vydří near Telč, central Moldanubian pluton is described. Mineral assemblage, optical properties, unit-cell dimensions and chemical composition are given. Hurlbutite is suggested to originate during primary (possibly magmatic) crystallization....

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...

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....

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...

Beryl-columbite pegmatite from Branná, Hrubý Jesenik Mnts., Northern Moravia Granitic pegmatite from Branná represents typical beryl-columbite pegmatite of the Hrubý Jeseník Mts. pegmatite field. Its internal structure, textural-paragenetic units and description of minerals are given. Columbite-tantalite is a typical accessory mineral besides garnet and beryl. Dominant ferrocolumbite is enriched in...

Contribution to the knowledge of provenance of pebbles from the Upper Viséean conglomerates in the Drahany Uplands: IV. Garnet mica-schist with tourmaline The pebbles of garnet mica-schist with tourmaline from Račice and Luleč Conglomerates, Drahany Upland were studied using mineralogical and petrological methods. Mineral assemblage, chemical composition of garnet and...

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...

Contribution to the knowledge of provenance of pebbles from the Upper Viséean conglomerates in the Drahany Hights: III. Orbicular tourmaline-bearing granite The pebbles of orbicular tourmaline-bearing granites (OTG) were found at several localities in the Luleč conglomerates, Drahany Hights. Mineral assemblage, textural relations and chemical compositions of granites and tourmaline...

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...

Secondary minerals of uranium from Zálesí and Horní Hoštice in the Rychlebské hory mts., Northern Moravia A set of secondary minerals of uranium from Zálesí and Horní Hoštice in the Rychlebské hory Mts., Northern Moravia is described in the present paper. Studtite, becquerelite, wölsendorfite, fourmarierite, masuyite, uranophane, beta-uranophane, kasolite, parsonsite,...

Primary Nb–, Ta–, W–, Sn– and Ti– oxides in tourmalines from pockets of simple pegmatites of the Strážek Moldanubicum, Czech Republic Complex Nb–, Ta–, W–, Sn– and Ti – oxides occur as inclusions in tourmalines from pockets of 7 simple pegmatites in Strážek Moldanubicum. They are concentrated along the contacts...

Beryl-columbite pegmatite Věžná I The beryl-columbite subtype Věžná I pegmatite has been subject of numerous scientific studies particularly from Petr Černý. It penetrates serpentinite and has a very complicated mineralogical evolution including several stages of crystallization. The primary magmatic crystallization includes formation of granitic zone, graphic zone, blocky zone with...