 | | Journal (article/letter/editorial) | | I.M.A. Subcommittee on nomenclature of the pyrochlore group and 3I end-member names provided by the LM...names for gemstones, a hypothetical polytype, a group name, and a rock name. As in the last three lists...a veinlet of Co and Ni minerals in a serpentine quarry near Oxford, Llano Co., Texas, contains red-violet... a 8"899, b 7"065, c 6"644 A, fl 97.25 ~ space group Cz/m. Composition 2[CoC12.6H20], with small amounts...a 7"764, b 6"o45, c 9-022 A, fl I 12"5 ~ space group P21/m. Composition [Pb2(Fe 3, ZnXAsO4)2(OH,H20)] |  | | Report (issue) | | Stefanweissite Crystal Data: Orthorhombic. Point Group: 2/m 2/m 2/m. As flattened prismatic crystals to...(589) 13.89-15.2, (650) 13.5-14.7 Cell Data: Space Group: Cmca. a = 7.2896(4) b = 14.1435(5) c = 10.1713(4)...4 X-Ray Diffraction Pattern: In den Dellen pumice quarry, Laacher See volcano, Eifel region, Rhineland-Palatinate...32 28.03 0.91 19.96 99.69 (1) In den Dellen pumice quarry, Laacher See volcano, Eifel region, Rhineland-Palatinate...baddeleyite, a pyrochlore-group mineral. Distribution From In den Dellen (Zieglowski) pumice quarry, 1.5 km |  | | Report (issue) | | Hydroxymanganopyrochlore Crystal Data: Cubic. Point Group: 4/m 3 2/m. Crystals octahedral, to 0.7 mm. Physical...Optical Class: n.d. n(calc.) = 2.29 Cell Data: Space Group: Fd3m. a = 10.2523(2) Z=8 X-ray Powder Pattern:...85)Σ=2.01O6[(OH)0.65O0.24F0.11]. Mineral Group: Pyrochlore group. Occurrence: In small miarolitic cavities...gahnite–hercynite series. Distribution: From a pumice quarry, near Mendig, Laacher See area, Eifel volcanic...the mineral’s identity as a member of the pyrochlore group with dominant OH (hydroxyl) and Mn2+ respectively |  | | Report (issue) | | Mn)2Zr2Nb2TiFeO14 Crystal Data: Monoclinic. Point Group: 2/m. Forms isolated, imperfect, prismatic to acicular...Optical Class: n.d. n(calc.) = 2.26 Cell Data: Space Group: C2/c. β = 90.072(2)° Z=4 a = 7.3119(5) b = 14...10.1700(7) X-ray Powder Pattern: ‘‘Zieglowski’’quarry, Eifel region, Rheinland-Pfalz, Germany. 2.967...7.75 10.98 19.39 27.82 99.52 (1) ‘‘Zieglowski’’quarry, Eifel region, Rheinland-Pfalz, Germany; average... zircon, a pyrochlore-group mineral. Distribution: From the ‘‘Zieglowski’’ pumice quarry, 1.5 km NE of |  | Caprilli, E., Della Ventura, G., Williams, T. C., Parodi, G. C., Tuccimei, P. (2006) THE CRYSTAL CHEMISTRY OF NON-METAMICT PYROCHLORE-GROUP MINERALS FROM LATIUM, ITALY. The Canadian Mineralogist, 44 (6) 1367-1378 doi:10.2113/gscanmin.44.6.1367 | Journal (article/letter/editorial) | | (2006) THE CRYSTAL CHEMISTRY OF NON-METAMICT PYROCHLORE-GROUP MINERALS FROM LATIUM, ITALY ENRICO CAPRILLI...of a crystal-chemical study of a suite of pyrochlore-group minerals from the holocrystalline syenitic...Following the IMA classification scheme for pyrochlore-group minerals modified according to the “50% rule”...betafite, pyrochlore and uranpyrochlore. In comparison with known data for pyrochlore-group minerals,...substitution 2(Nb + Ta)5+ Ti4+ + W6+ at the B site. Pyrochlore-group minerals from Latium have significantly high |  | Sun, Yi, Schmitt, Axel K., Häger, Tobias, Schneider, Marcus, Pappalardo, Lucia, Russo, Massimo (2021) Natural blue zircon from Vesuvius. Mineralogy and Petrology, 115 (1). 21-36 doi:10.1007/s00710-020-00727-7 | Journal (article/letter/editorial) | | in diameter (mostly U-rich thorianite and pyrochlore-group minerals), while homogeneous zircon domains...collected from the San Vito Quarry near Ercolano The Bronze Age Avellino pumice eruption (3945 ± 10 cal...Santacroce et al. 2008). The vent area of the Avellino pumice eruption was located at the Piano della Gianestre...syenite clasts were collected from the San Vito Quarry, Ercolano (40 °49′50.91´´N – 14 °22′54.84″E). The...Accessory apatite, fluorite, and members of the pyrochlore group are present as minute (<500 μm), Fig. 2 Optical |  | Chukanov, Nikita V., Krivovichev, Sergey V., Pakhomova, Anna S., Pekov, Igor V., Schäfer, Christof, Vigasina, Marina F., Van, Konstantin V. (2014) Laachite, (Ca,Mn)2Zr2Nb2TiFeO14, a new zirconolite-related mineral from the Eifel volcanic region, Germany. European Journal of Mineralogy, 26 (1) 103-111 doi:10.1127/0935-1221/2013/0025-2343 | Journal (article/letter/editorial) | | spessartine, tephroite, thorite, zircon, and a pyrochlore-group mineral. Laachite is deep brownish-red, has...Mn)2(Zr,Mn)2Nb2TiFeO14. Laachite is monoclinic, space group C2/c, a ¼ 7.3119(5), b ¼ 14.1790(10), c ¼ 10.1700(7)...is found in the active pumice quarry ‘‘In den Dellen’’ (or ‘‘Zieglowski’’ quarry), 1.5 km NE of the city...solid-solution series, laachite, baddeleyite, a pyrochlore-group mineral, spessartine, tephroite, rhodonite... In the latter association laachite and a pyrochlore-group mineral are the youngest minerals. Laachite |  | Chukanov, Nikita V., Zubkova, Natalia V., Pekov, Igor V., Vigasina, Marina F., Polekhovsky, Yury S., Ternes, Bernd, Schüller, Willi, Britvin, Sergey N., Pushcharovsky, Dmitry Yu. (2019) Stefanweissite, (Ca,REE)2Zr2(Nb,Ti)(Ti,Nb)2Fe2+O14, a new zirconolite-related mineral from the Eifel paleovolcanic region, Germany. Mineralogical Magazine, 83 (4) 607-614 doi:10.1180/mgm.2018.171 | Journal (article/letter/editorial) | | ferriallanite-(La), magnetite, baddeleyite, and a pyrochlore-group mineral. Stefanweissite is brown, reddish-brown...Nb)2Fe2+O14. Stefanweissite is orthorhombic, space group Cmca. The unit-cell parameters are: a = 7.2896(4)...et al., 2017). As a rule, in nature zirconolite-group minerals contain uranium and thorium, the total...Stefanweissite occurs in the In den Dellen (Zieglowski) pumice quarry, 1.5 km NE of Mendig, Laach Lake (Laacher See)...ferriallanite-(La), magnetite, baddeleyite, and a pyrochlore-group mineral. a b 4 c d FIG. 1. Aggregates |  | Chukanov, N. V., Aksenov, S. M., Rastsvetaeva, R. K., Van, K. V., Belakovskiy, D. I., Pekov, I. V., Gurzhiy, V. V., Schüller, W., Ternes, B. (2015) Mendigite, Mn2Mn2MnCa(Si3O9)2, a new mineral species of the bustamite group from the Eifel volcanic region, Germany. Geology of Ore Deposits, 57 (8) 721-731 doi:10.1134/s1075701515080048 | Journal (article/letter/editorial) | | Mn2Mn2MnCa(Si3O9)2, a New Mineral Species of the Bustamite Group from the Eifel Volcanic Region, Germany1 N. V. Chukanova...bustamite, has been found in the In den Dellen pumice quarry near Mendig, Laacher Lake area, Eifel Mountains...nosean, rhodonite, tephroite, magnetite, and a pyrochloregroup mineral. Mendigite occurs as clusters of longprismatic...a single crystal. Mendigite is triclinic, space group P 1 ; the unitcell parameters are a = 7.0993(4)...related to wollastonite or even as a wollastonitegroup member (Ohashi and Finger, 1978; Back, 2014). This |  | | Book (edition) | | to the chemical formula, allegiance to a mineral group, symmetry and crystal structure as well as the strongest...chemical formula, structure (crystal system, space group, and unit cell dimensions), and at least some other...site occupancy. The Sb members of the tennantite group (2.G) will serve as a good example: tetrahedrite...registered in this book (e.g. in the amphibole group). For more detailed information see "Dana's System...) 6-21 %. VHN(synth.) (10.C. purine-porphyrine group). a nickel porphyrine. With quartz. rutile, piemontite |  | | Book (edition) | | supergroup (Pasero et al., EJM 22, 163-179, 2010), pyrochlore supergroup (Atencio et al., CM 48, 673-698, 2010)...expensive analyses (especially amphibole and pyrochlore supergroups). In the case of light elements,...Al;[(OH) 4 IPO;(OH)l(PO4))'4Hi0 (8.D, turquoise group). Triclinic, PT, a,b,c = 7.39, 7.72, ll.34,a,p,y=99°46'...Northampton co., Pennsylvania, and from the Kobokobo quarry, near Kamituga, Dern. Rep. of Congo. EJM 23, 269-277...luster vitreous, streak white. Cleav- (8.D, mixite group). Hexagonal, P6/111, a,c = 13.55, age {001} perfect |  | Chukanov, Nikita, Zubkova, Natalia, Britvin, Sergey, Pekov, Igor, Vigasina, Marina, Schäfer, Christof, Ternes, Bernd, Schüller, Willi, Polekhovsky, Yury, Ermolaeva, Vera, Pushcharovsky, Dmitry (2018) Nöggerathite-(Ce), (Ce,Ca)2Zr2(Nb,Ti)(Ti,Nb)2Fe2+O14, a new zirconolite-related mineral from the Eifel volcanic region, Germany. Minerals, 8 (10) 449 doi:10.3390/min8100449 | Journal (article/letter/editorial) | | magnetite, baddeleyite, nosean, and a chevkinite-group mineral. Nöggerathite-(Ce) has a color that ranges...Nöggerathite-(Ce) is orthorhombic, of the space group Cmca. The unit cell parameters are: a = 7.2985(3)...was found in the In den Dellen (Zieglowski) pumice quarry, 1.5 km to the notrheast of Mendig, in the Laach...magnetite, baddeleyite, nosean, and a chevkinite-group mineral. The origin of sanidinites of the Laacher...readily indexed in the orthorhombic unit cell, space group Cmca. The unit cell parameters calculated from the |  | Chukanov, Nikita V., Vigasina, Marina F., Zubkova, Natalia V., Pekov, Igor V., Schäfer, Christof, Kasatkin, Anatoly V., Yapaskurt, Vasiliy O., Pushcharovsky, Dmitry Yu. (2020) Extra-Framework Content in Sodalite-Group Minerals: Complexity and New Aspects of Its Study Using Infrared and Raman Spectroscopy. Minerals, 10 (4) 363 doi:10.3390/min10040363 | Journal (article/letter/editorial) | | minerals Article Extra-Framework Content in Sodalite-Group Minerals: Complexity and New Aspects of Its Study...Abstract: Nine samples of carbonate-free sodalite-group minerals, including those with abnormally high contents...demonstrate the existence of a sulfide sodalite-group mineral with the idealized formula Na7 (Si6 Al6...X-ray structural analysis, in the F-rich sodalite-group mineral from the Eifel paleovolcanic region, Germany...sodalite-type compounds. Keywords: mineral; sodalite group; extra-framework species; infrared spectroscopy; |  | | Journal (article/letter/editorial) | | migration of the Mexican element. Members of this group are represented in the three generalized communities...Basin-Range structure. The area chosen includes the group of en echelon ranges and valleys that branch from...The space group is 0.£, and the structure is similar to that of members of the pyrochlore group. M A R TIN...Madison group comprises three Lower Mississippian formations totalling 500 to 1800 feet. The group is prominently...volcano Mount Mazama, following violent eruptions of pumice and scoria. The date of this catastrophe may be |  | | Journal (article/letter/editorial) | | Africa – the Red Sandstone Group (Fig.1). Within the Red na Sandstone Group is the Oligocene-aged Nsungwe...fluviatile, lower re sequence of the Red Sandstone Group (Roberts et al., 2010); (3) a late Oligocene event...Formation (upper sequence of the Red Sandstone Group (Roberts et al., 2010, 2012) and; (4) late lP ...minerals (including phlogopite) and occasional relict pumice clasts are dispersed throughout the tuffs (Figs...titanite, phlogopite, apatite, andradite, sanidine, pyrochlore and anhedral zircon. Single crystal re imaging |  | | Book | | Author: ( ·u/lector .,· c;uide 10 the A,nphibole Group, 978-0-7643-4870-9 /11t1Dductio11 to Rudioocth•e...Guide lo the Zeolite Group. 978-0-7643-4675-0 Colll:'ctor} G11ide to the Feldspar Group, 978-0-7643-4329-2............................................. 52 Portugal ........... ... ................................carnotite and tyuyan1unite, followed by autun ite-group phosphates and arsenates, and silicates, pariicularly...su Ifates, carbonates, men1bers ofthe autunite group, and various uranyl silicates. In vanadiferous ores |  | | Journal (issue) | | Wales, Belgium, France, Germany, Holland, Italy, Portugal, Spain, Sweden, Switzerland, U.S.A. ASSAYERS...Geological Surveys . . . . . . . . . 190 Statistical Group Introduction to Geology. W. D. Keller . . 3rd...Marshall's Hall, Jamaica • • . facing p. 117 Rio Grande Valley, near Comfort Castle • • • Plate III...western tributary of the Rio Grande (see Plate I). The wide valley of the Rio Grande separates the main Blue...which runs for 13 miles along the valley of the Rio Grande from Port Antonio to Comfort Castle and thence |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | Species containing more than one anion or anion group may be assigned to a separate class or may be assigned...specifies the atomic (cation to anion, or to anion group) ratio for the mineral. This and the remaining numbers...appropriate Dana number. When recognized, membership in a group is noted. Occasionally, the phrase “an inadequately...internally contradictory. 5A. Groups The term group refers to an aggregate or multiple (usually three...identical or closely similar structure and chemistry. A group may be named when there are several end members |  | | Book (edition) | | extensively rewritten by the book’s distinguished group of authors in the light of new research and important...all varietal names, synonyms, spelling variants, group names, and so forth; only names in contemporary...contemporary use have been included. Most of the mineral group lists presented were taken from the Glossary of Mineral...letters pointing out that for some entries our space group, Z, and lattice constants are mutually exclusive...trigonal. Class: Classes are designated by their point group symmetry. Note that as mineralogists we use the | | | Book (edition) | | extensively rewritten by the book's distinguished group of authors in the light of new research and important...all varietal names, synonyms, spelling variants, group names, and so forth; only names in contemporary...contemporary use have been included. Most of the mineral group lists presented were taken from the Glossa,y of Mineral...letters pointing out that for some entries our space group, Z, and lattice constants are mutually exclusive...trigonal. Class: Classes are designated by their point group symmetry. Note that as mineralogists we use the |  | | Book | | illustration shows a gouache by Adriana Pignatelli: “Grande Eruzione del Vesuvio del 1767” (Vesuvius, Great...last 15 years, as principal leader of my research group, in collaboration with many foreign Institutions...facies of the Campanian Ignimbrite is made up of pumice and black scoriae, with a different degree of flattening...yellow one. Di Girolamo et al. (1973) identified a pumice fall deposit (Fig. 2) at the base of the Campanian...al. (1999), and Polacci et al. (2003) found this pumice deposit in direct contact with the Ignimbrite and |  | | Book | | approved rulings have been published for the pyrochlore (Amer. Mineral. 1977, 62, 403) and amphibole...recommendations on the nomenclature of the amphibole group, published in the Mineral. Mag. (1978, 42, 533)...p. 433 (Adigeite). A mineral of the serpentine group with the composition 5Mg0.3Si02.3^-4H20, from Mt...a veinlet of Co and Ni minerals in a serpentine quarry near Oxford, Llano Co., Texas, contains red-violet...8-899, b 7-065, c 6-644 A, /? 97-25°, 4 space group C2/m. Composition 2[CoC12.6H20], with small amounts |  | Belakovskiy, Dmitriy I., Cámara, Fernando, Gagne, Olivier C., Uvarova, Yulia (2016) New Mineral NamesAradite and ZadoviteChlorkyuygenite, Fluorkyuygenite, FluormayeniteChubaroviteCryobostryxiteFerriakasakaite-(La) and Ferriandrosite-(La)Ferro-pedriziteFlamiteFlinteiteFluorchegemiteFluor-tsilaisiteGatedaliteKononoviteMendigiteNabimusaite. American Mineralogist, 101 (7) 1709-1716 doi:10.2138/am-2016-nmn101714 | Journal (article/letter/editorial) | | μm shows that the minerals are trigonal, space group R3m, Z = 3, with cell parameters a = 7.1300(1),...zadovite-series minerals belonging to the nabimusaite group is characterized by a 1:1 alternation of antiperovskite-like...(space group I43d, a ≈ 12 Å) with the general formula X12T14O32–x(OH)3x[W6–3x]: the mayenite group (oxides)...(oxides) and the wadalite group (silicates), for which the anionic charge over 6 W sites is –2 and –6, respectively...to chlorkyuygenite. Thus currently the mayenite group includes four species: chlormayenite Ca12Al14O32[o4Cl2] |  | Chukanov, Nikita V., Shendrik, Roman Yu., Vigasina, Marina F., Pekov, Igor V., Sapozhnikov, Anatoly N., Shcherbakov, Vasily D., Varlamov, Dmitry A. (2022) Crystal Chemistry, Isomorphism, and Thermal Conversions of Extra-Framework Components in Sodalite-Group Minerals. Minerals, 12 (7) 887 doi:10.3390/min12070887 | Journal (article/letter/editorial) | | Conversions of Extra-Framework Components in Sodalite-Group Minerals Nikita V. Chukanov 1,2, *, Roman Yu. Shendrik...Conversions of Extra-Framework Components in Sodalite-Group Minerals. Minerals 2022, 12, 887. https://doi.org/...substitutions of extra-framework components in sodalite-group aluminosilicate minerals and their thermal conversions...•− radical anion is the most stable polysulfide group. The HS− -dominant sodalitegroup mineral sapozhnikovite...CO2 0 -bearing sodalite-group minerals are discussed. Keywords: sodalite group; isomorphism; solid solutions; |  | | Book (edition) | | Mexico (#2, column 1) and TENNANTITE, Dresser quarry, Walton, Nova Scotia, Canada (13, column 2). ...attempt a complete description of a small mineral group to uncover the unsatisfactory state of our present...well render the volume difficult to use by a large group of potential readers not familiar with structural/chemical...with the inherent problems of end-member names vs. group names and related aspects of nomenclature. Rather...spelling variants, descriptive names, mixtures, group names, chemical names, etc., found in the literature |
|
Pumice quarry, Ribeira Grande, São Miguel, Azores, Portugal