Bulletin Mineralogie Petrologie最新文献_第2页

Phurcalit a uranofán-beta z Ruprechtic u Liberce (Česká republika) 来自利贝雷茨附近Ruprechtic的磷钙石和铀钒β（捷克共和国）

Bulletin Mineralogie Petrologie Pub Date : 2022-01-01 DOI: 10.46861/bmp.30.145

J. Sejkora, Jaromír Tvrdý, Vojtěch Mai

{"title":"Phurcalit a uranofán-beta z Ruprechtic u Liberce (Česká republika)","authors":"J. Sejkora, Jaromír Tvrdý, Vojtěch Mai","doi":"10.46861/bmp.30.145","DOIUrl":"https://doi.org/10.46861/bmp.30.145","url":null,"abstract":"A rare uranium supergene minerals, phurcalite and uranophane-beta, were found in association with metaautunite at fissures of granitoid rocks in the active Wagner quarry in Ruprechtice near Liberec (northern Bohemia, Czech Republic). Phurcalite occurs there as bright to deep yellow coatings with an area up to 10 × 3 mm in size composed of acicular to columnar crystals up to 0.5 mm in length. It is orthorhombic, space group Pbca, the unit-cell parameters refined from X-ray powder diffraction data are: a 17.3973(18), b 16.0161(15), c 13.5693(19) Å, V 3780.9(5) Å3. Chemical analyses of phurcalite correspond to the empirical formula Ca2.20(UO2)3.06(PO4)1.96(AsO4)0.04O2.26·7H2O. Uranophane-beta forms a relatively abundant pale yellow coatings of up to 2 × 2 cm in size composed of translucent to transparent acicular crystals with a vitreous lustre and a length of up to 0.2 mm. It is monoclinic, space group P21/a, the unit-cell parameters refined from X-ray powder diffraction data are: a 13.959(2), b 15.5420(16), c 6.6227(9) Å, β 91.43(1)o and V 1436.3(2) Å3. Chemical analyses of uranophane-beta correspond to the empirical formula Ca1.09(UO2)1.99[(SiO3OH)1.68 (PO4)0.29(AsO4)0.03]Σ2.00·5H2O. Metaautunite occurs there as abundant light yellow aggregates with an area up to some cm2 in size composed of tiny (up to 0.5 mm) tabular crystals or rarely as well-developed individual tabular crystals up to several mm in size. It clearly differs from other minerals in the association by very strong yellow-green luminescence in both short- and long-wave UV radiation. It is tetragonal, space group P4/nmm, the unit-cell parameters refined from X-ray powder diffraction data are: a 7.006(2), c 16.899(4) Å and V 829.4(6) (5) Å3. Chemical analyses of metaautunite correspond to the empirical formula Ca1.03(UO2)2.09(PO4)1.96(AsO4)0.04·6H2O.","PeriodicalId":53145,"journal":{"name":"Bulletin Mineralogie Petrologie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70599854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wolframová a sulfidická hydrotermální mineralizace z Pekelského vrchu u Jihlavy (Česká republika) 吉赫拉瓦附近Pekelskývrch的钨和硫化物热液成矿作用（捷克共和国）

Bulletin Mineralogie Petrologie Pub Date : 2022-01-01 DOI: 10.46861/bmp.30.073

P. Pauliš, Stanislav Kopecký, Z. Dolníček, J. Sejkora, Ondřej Pour, Jana Ulmanová, Stanislav Kopecký, ml.

{"title":"Wolframová a sulfidická hydrotermální mineralizace z Pekelského vrchu u Jihlavy (Česká republika)","authors":"P. Pauliš, Stanislav Kopecký, Z. Dolníček, J. Sejkora, Ondřej Pour, Jana Ulmanová, Stanislav Kopecký, ml.","doi":"10.46861/bmp.30.073","DOIUrl":"https://doi.org/10.46861/bmp.30.073","url":null,"abstract":"The occurrence of tungsten mineralization of greisen type with the dominant ferberite and scheelite in quartz veins was detected in 1963 at the site Pekelský vrch near Jihlava. We conducted a detailed mineralogical research of the vein material sampled in the years 2020 - 2022. The dominating tungsten mineralization is represented especially by two chemically different types of ferberite, including relatively pure younger ferberite and older generation of ferberite containing substantial amounts of hübnerite (19 - 45 mol.%) and huanzalaite component (2.6 - 4.1 mol.%). Widespread scheelite replaces earlier ferberite, and is replaced by younger generation of ferberite. The Ti,W-rich columbite-(Fe) is an accessory phase associated with younger generation of ferberite. In addition to tungsten mineralization, there was recorded a varied sulphidic mineralization with dominating pyrite, chalcopyrite, galena, molybdenite and rare sulphosalts including matildite and gustavite, and locally also tellurosulphides (joséite-A and joséite-B), native bismuth and electrum. The supergene mineralization with Fe3+ hydroxides, bismutite, bismite, petitjeanite, kintoreite, corkite, plumbogummite, jarosite and iodargyrite is relatively rare. The gangue is dominated by quartz with flakes of low-F phengitic muscovite and rare siderite and fluorapatite. In addition, a fragment of an Al-rich rock, composed of corundum, andalusite, margarite and muscovite, was identified in the dump material. A total of 32 mineral species was found there.","PeriodicalId":53145,"journal":{"name":"Bulletin Mineralogie Petrologie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70599540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Příspěvek k poznání exotických hornin flyšového pásma Západních Karpat: chloritoidová břidlice z Nového dvora u Kvasic (Chřiby) 对了解喀尔巴阡山脉西部复理石带奇异岩石的贡献：Kvasice（Chřiby）附近Novýdvora的绿泥质板岩

Bulletin Mineralogie Petrologie Pub Date : 2022-01-01 DOI: 10.46861/bmp.30.188

Z. Dolníček, Rostislav Koutňák, Jana Ulmanová

引用次数: 0

Krystalograficky orientovaný srůst rutilu a ilmenitu a doprovodné minerály z Pasek nad Jizerou (krkonošsko-jizerské krystalinikum) Pasek nad Jizerou（Krkonoše-Jizerskécrystellanicum）金红石和钛铁矿及其伴生矿物的结晶定向生长

Bulletin Mineralogie Petrologie Pub Date : 2022-01-01 DOI: 10.46861/bmp.30.019

Z. Dolníček, Jana Ulmanová

{"title":"Krystalograficky orientovaný srůst rutilu a ilmenitu a doprovodné minerály z Pasek nad Jizerou (krkonošsko-jizerské krystalinikum)","authors":"Z. Dolníček, Jana Ulmanová","doi":"10.46861/bmp.30.019","DOIUrl":"https://doi.org/10.46861/bmp.30.019","url":null,"abstract":"A detailed mineralogical study of a sample of quartz gangue containing macroscopically visible acicular rutile, which was collected in area of former Cu(-Ag) ore deposit NE from Paseky nad Jizerou, yielded a number of mineralogical findings. The mineralization is bound to strongly elongated quartz lenses, arranged conformably with schistosity of host phyllite of the Krkonoše-Jizera Crystalline Complex. Rutile is polysynthetically lamelled and compositionally zoned, with elevated contents of Fe (0.004 - 0.015 apfu), Nb (0.001 - 0.004 apfu), V (0.001 - 0.002 apfu) and W (0.000 - 0.006 apfu). It contains microscopic platy inclusions of ilmenite, which are regularly distributed in up to three crystallographic directions (probably cleavage planes) regardless of compositional zoning of host rutile. In addition, sporadic occurrence of aggregates composed of fluorapatite, phengitic muscovite and clinochlore was found too. The studied mineralization has metamorphic-secretory origin. The observed microstructural arrangement of inclusions of ilmenite in rutile host is very uncommon worldwide. With respect to evidently LP-LT origin of mineralization, we interpret its origin not in terms of exsolution but in terms of younger hypogene alteration of pre-existing rutile by fluids with relatively low Eh. The activity of such “suitable” fluids can be illustrated during crystallization of chlorite, which was formed at temperatures 137 - 160 °C and at log fO2 between -49.2 and -53.1 bar.","PeriodicalId":53145,"journal":{"name":"Bulletin Mineralogie Petrologie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70599446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dve nové lokality pyromorfitu v Slovenskej republike: Chvojnica a Hnilčík 斯洛伐克共和国境内两处新的火山灰岩遗址：Chvojnica和Hnilčík

Bulletin Mineralogie Petrologie Pub Date : 2022-01-01 DOI: 10.46861/bmp.30.038

Martin Števko, Jiří Sejkora, František Kuraj, Matej Rybárik

{"title":"Dve nové lokality pyromorfitu v Slovenskej republike: Chvojnica a Hnilčík","authors":"Martin Števko, Jiří Sejkora, František Kuraj, Matej Rybárik","doi":"10.46861/bmp.30.038","DOIUrl":"https://doi.org/10.46861/bmp.30.038","url":null,"abstract":"Two new localities of pyromophite were recently discovered at the Chvojnica base metals occurrence in the Strážovské vrchy Mts. (Tatric Unit), and at the supergene zone of the Piata siderite-type hydrothermal vein near Hnilčík (Spišsko-gemerské rudohorie Mts., Gemeric Unit), Slovak Republic. At the Chvojnica occurrence pyromorphite occurs as bright green crystalline crusts and radial aggregates up to 3 mm developed in cavities and fractures in the porous quartz gangue with relicts of primary galena. It is associated with minor crystalline coatings of cerussite. The refined unit-cell parameters of pyromorphite from Chvojnica (for the hexagonal space group P63/m) are a 9.9750(2) Å, c 7.3569(2) Å and V 633.93(2) Å3. Except of dominant contents of Pb, P and Cl, only minor amounts of Ca (up to 0.10 apfu), Al (up to 0.05 apfu), Fe (up to 0.04 apfu), As (up to 0.05 apfu) and S (up to 0.02 apfu) were detected in studied pyromorphite. At the Hnilčík, pyromorphite occurs rarely in the cavities of the cavernous quartz-limonite gangue in the supergene zone of the Piata vein. It forms colourless to very light green prismatic crystals up to 2 mm in size, or crystalline aggregates associated with goethite, Mn oxides and malachite. The refined unit-cell parameters of pyromorphite from Hnilčík (for the hexagonal space group P63/m) are a 9.9484(15) Å, c 7.315(2) Å, V 627.0(2) Å3 (Ca-poor) and a 9.8983(6) Å, c 7.2589(8) Å, V 615.92(9) Å3 (Ca-rich). Pyromorphite from Hnilčík shows strong chemical zoning caused by variation of Pb and Ca contents, with outer parts of the crystals enriched in Ca. Contents of Ca are ranging between 0.09 to 0.96 apfu, with the atomic Pb/(Pb+Ca) ratio ranging from 0.98 to 0.81, which is close to the compositional boundary with phosphohedyphane. Interesting are also elevated concentrations of Cu reaching up to 0.07 apfu. Other minor elements detected in pyromorphite from Hnilčík are As (up to 0.12 apfu), Al, V and S (all up to 0.02 apfu).","PeriodicalId":53145,"journal":{"name":"Bulletin Mineralogie Petrologie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70599589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Neobvyklá asociace minerálů s willemitem z prostoru centrální části příbramského uran - polymetalického revíru (Česká republika) 多金属区Příbram铀中部的矿物与willmite异常结合（捷克共和国）

Bulletin Mineralogie Petrologie Pub Date : 2022-01-01 DOI: 10.46861/bmp.30.224

J. Sejkora, Z. Dolníček, Pavel Škácha, Jana Ulmanová, Luboš Vrtiška

引用次数: 1

Supergénna mineralizácia na II. horizonte Východnej šachty hnedouhoľnej bane Handlová (Slovenská republika) II的超成因矿化。horizont East煤矿Handlová（斯洛伐克共和国）

Bulletin Mineralogie Petrologie Pub Date : 2022-01-01 DOI: 10.46861/bmp.30.214

Pavol Myšľan, Martin Števko, Karsten Ivan

{"title":"Supergénna mineralizácia na II. horizonte Východnej šachty hnedouhoľnej bane Handlová (Slovenská republika)","authors":"Pavol Myšľan, Martin Števko, Karsten Ivan","doi":"10.46861/bmp.30.214","DOIUrl":"https://doi.org/10.46861/bmp.30.214","url":null,"abstract":"At the II. horizon of the Eastern shaft of Handlová coal mine the occurrence of mineral assemblage of secondary minerals was identified. These accumulations consist of sulphate group minerals confirmed by PXRD and semiquantitative chemical analysis (EDS), namely gypsum, alunogen, pickeringite, melanterite, sideronatrite and epsomite. Sulphates form coatings, crystalline crusts and aggregates, which crystallized on the walls of mine corridors. The dimensions of these accumulations are reaching approximately 1.5 x 1.3 m with thickness up to 5 cm. The refined unit-cell parameters of alunogen (for the triclinic space group P-1) are: a 7.413(1), b 26.944(4), c 6.051(1) Å, α 90.05(1), β 97.65(1), γ 91.82(1)°, V 1197.1(3) Å3, pickeringite (for the monoclinic space group P21/c): a 6.1808(8), b 24.252(2), c 21.220(2) Å, β 100.36(1)°, V 3128.8(6) Å3 and melanterite (for the monoclinic space group P21/c): a 14.022(5), b 6.503(2), c 10.945(4) Å, β 105.83(3)°, V 960.2(7) Å3. Sideronatrite and epsomite were identified in mixture with the most significant diffraction maxima for sideronatrite: 10.252/100, 4.905/37, 3.424/10, 3.067/9 and epsomite: 5.347/18, 5.302/18, 4.489/26, 4.215/100, 4.201/59, 2.880/24, 2.747/23, 2.677/18. Accumulations of minerals were formed on the mine walls. Secondary sulphates are considered as products of the weathering of Fe-rich carbonates, pyrite and other sulphidic minerals which are part of associated pelosiderites embedded in the clays and claystones. Locally, gypsum and hexahydrite were also identified in the form of transparent crystals and white powdery aggregates on the calcite speleothems genetically linked to Mesozoic limestones and gypsum-rich Lower Triassic Werfen Formation. Unit-cell parameters refined from X-ray powder diffraction data are for hexahydrite (for the monoclinic space group C2/c): a 10.107(1), b 7.2114(8), c 24.424(3) Å, β 98.28(1)°, V 1761.7(3) Å3.","PeriodicalId":53145,"journal":{"name":"Bulletin Mineralogie Petrologie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70600320","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

New data on sulphosalts from the hydrothermal siderite-type veins in the Spišsko-gemerské rudohorie Mts. (eastern Slovakia): 3. Tintinaite and bournonite from the Gašpar (Grexa) vein near Rožňava 2 .斯洛伐克东部Spišsko-gemerské rudohorie山热液菱铁矿型脉中硫化物的新资料:来自Rožňava附近Gašpar (Grexa)脉的tintinite和bournonite

Bulletin Mineralogie Petrologie Pub Date : 2022-01-01 DOI: 10.46861/bmp.30.011

M. Števko, J. Sejkora, Z. Dolníček

{"title":"New data on sulphosalts from the hydrothermal siderite-type veins in the Spišsko-gemerské rudohorie Mts. (eastern Slovakia): 3. Tintinaite and bournonite from the Gašpar (Grexa) vein near Rožňava","authors":"M. Števko, J. Sejkora, Z. Dolníček","doi":"10.46861/bmp.30.011","DOIUrl":"https://doi.org/10.46861/bmp.30.011","url":null,"abstract":"A new occurrence of tintinaite was recently discovered at the Gašpar (Grexa) siderite-type hydrothermal vein with sulphides located in the Rožňavská dolina valley near Rožňava, Spišsko-gemerské rudohorie Mts., Rožňava Co., Košice Region, Slovakia. Tintinaite occurs as lead-gray, acicular to prismatic crystals up to 4 cm long or rich fibrous aggregates and nests reaching up to 7 × 5 cm, which are enclosed in quartz-siderite gangue. Crystals and aggregates of tintinaite are often directly associated with massive accumulations of older sulphides, especially arsenopyrite, chalcopyrite, pyrrhotite and pyrite. Grains and aggregates of younger native bismuth or bournonite are occasionally replacing aggregates of tintinaite. The refined unit-cell parameters of tintinaite (for the orthorhombic space group Pnnm) are: a 22.523(7) Å, b 34.137(11) Å, c 4.0389(14) Å and V 3105.4(1) Å3. The calculated value of N for tintinaite from the Gašpar vein is ranging from 1.93 to 2.00 and the Sb/(Sb+Bi) atomic ratio in three studied samples varies between 0.49 and 0.60, corresponding to Bi-rich tintinaite, with only one spot representing Sb-rich kobellite. The average Cu+Fe content in tintinaite is 1.96 apfu and minor concentrations of Ag (up to 0.14 apfu) and Se (up to 0.22 apfu) were also detected. The average (n = 55) empirical formula of tintinaite based on sum of all atoms = 63 apfu is (Pb10.56Ag0.07)10.63(Cu1.12Fe0.85)1.97(Sb8.50Bi6.75)15.25 (S35.01Se0.15)35.16. Bournonite is rare and it forms anhedral grains or aggregates up to 220 μm, which are replacing aggregates of tintinaite. Its average (n = 8) empirical formula of bournonite based on sum of all atoms = 6 apfu is Pb0.99Cu1.00(Sb0.98Bi0.03)1.01(S2.99Se0.01)3.00.","PeriodicalId":53145,"journal":{"name":"Bulletin Mineralogie Petrologie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70599418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Ferrierit-Mg a Ba bohatý heulandit z Chvaletic u Přelouče (Česká republika) 来自Chvaletice u Přelouče（捷克共和国）的富含镁和钡的铁白云石

Bulletin Mineralogie Petrologie Pub Date : 2022-01-01 DOI: 10.46861/bmp.30.197

P. Pauliš, Luboš Vrtiška, Z. Dolníček, Radana Malíková

{"title":"Ferrierit-Mg a Ba bohatý heulandit z Chvaletic u Přelouče (Česká republika)","authors":"P. Pauliš, Luboš Vrtiška, Z. Dolníček, Radana Malíková","doi":"10.46861/bmp.30.197","DOIUrl":"https://doi.org/10.46861/bmp.30.197","url":null,"abstract":"Two zeolites are described from the pyrite-manganese deposit Chvaletice near Přelouč, central Bohemia, Czech Republic. Ferrierite-Mg forms brown, up to 5 mm long flat needles, radially arranged, which grow on grey-brown fine-grained rock composed of quartz, pyrite and Mn-silicates. The unit-cell parameters of ferrierite-Mg, refined from the powder X-ray diffraction data, are a = 19.162(14), b = 14.125(13), c = 7.495(6) Å and V = 2028.8(9) Å3 (space group Immm). Chemical analyses correspond to the empirical formula (Mg2.66Ca0.44Mn0.41Fe0.30Ba0.29K0.16Na0.10Sr0.03)Σ4.39(Al7.77 Si27.96O72)·18 H2O. The Ba-rich heulandite forms aggregates up to several cm in size composed of transparent gold-brown grains with characteristic pearly luster at cleavage planes. The unit-cell parameters of heulandite, refined from the powder X-ray diffraction data, are a = 17.732(2), b = 17.823(4), c = 7.4290(15) Å, β = 116.3(2) ° and V = 2104.2(6) Å3 (space group Cm). In BSE images, its aggregates are not homogenous. Ba-poor part of analyses corresponds to heulandite-Ca and heulandite-K, Ba-rich part beside Ca- and K-dominant members also to very rare heulandite-Ba. Both studied zeolites contain a significant content of Mn, ranging between 0.32 - 0.70 apfu (ferrierite-Mg) and 0.09 - 0.28 apfu (Ba-rich heulandite).","PeriodicalId":53145,"journal":{"name":"Bulletin Mineralogie Petrologie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70600164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Supergenní mineralizace hydrotermálního Ag-Pb-Zn ložiska Hříva u Louňovic pod Blaníkem (Česká republika) Louńovice pod Blaníkem附近热液Ag-Pb-Zn矿床Hříva的超成因矿化（捷克共和国）

Bulletin Mineralogie Petrologie Pub Date : 2022-01-01 DOI: 10.46861/bmp.30.124

P. Pauliš, Luboš Vrtiška, Z. Dolníček, J. Sejkora, Bohuslav Bureš, Radana Malíková, Ondřej Pour

{"title":"Supergenní mineralizace hydrotermálního Ag-Pb-Zn ložiska Hříva u Louňovic pod Blaníkem (Česká republika)","authors":"P. Pauliš, Luboš Vrtiška, Z. Dolníček, J. Sejkora, Bohuslav Bureš, Radana Malíková, Ondřej Pour","doi":"10.46861/bmp.30.124","DOIUrl":"https://doi.org/10.46861/bmp.30.124","url":null,"abstract":"At the Ag-Pb-Zn deposit Hříva near Louňovice pod Blaníkem (Central Bohemian Region, Czech Republic), supergene mineralization with relatively abundant samples of coronadite, pyromorphite and hinsdalite was newly detected. Coronadite forms black to several mm thick crusts on quartz vein or hinsdalite crusts. Coronadite is monoclinic, space group I2/m, the unit-cell parameters refined from X-ray powder diffraction data are: a 9.946, b 2.866(2), c 9.839 Å, β 90.34(2)° and V 280.4(4) Å3. Chemical analyses of coronadite correspond to the empirical formula (Pb1.32Na0.05Co0.03Ba0.02K0.01Ca0.01Mg0.01)Σ1.45Mn4+5.25(Mn3+1.95Al0.38Cu0.30 Fe0.08Si0.02Zn0.01P0.01)Σ2.74 (O15.82F0.17mCl0.01)Σ16 calculated on the basis (Mn+Fe+Al+Cu+Zn+Si+P) = 8 apfu. Pyromorphite occurs there as white to creamy crusts up to 2 mm thick. Its empirical formula calculated on the basis P+As = 3 apfu is Ca0.04Pb5.04[(PO4)2.98(AsO4)0.02]Σ3.00Cl1.14. Most interesting is relatively rare hinsdalite, which forms light green to blue-green crystalline crusts up to 0.1 mm thick on quartz or pyromorphite. Hinsdalite is trigonal, space group R-3m, the unit-cell parameters refined from X-ray powder diffraction data are: a 7.002(6), c 16.807(7) Å and V 713.6(7) Å3. Chemical analyses of hinsdalite correspond to the empirical formula Pb1.06Al2.73Cu0.11 [(PO4)1.18(SO4)0.82]Σ2.00(OH)6.36 on the basis P+S+As = 2 apfu.","PeriodicalId":53145,"journal":{"name":"Bulletin Mineralogie Petrologie","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70600213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0