 | | Journal (article/letter/editorial) | | underlying Tenerife (Canary Islands), Sao Miguel and Faial (Azores), and Vesuvius. The most fractionated...system is heavy-REE depleted roofwards, while the Azores systems, which lack these phases, display roofward...Walker & Croasdale (1971, and unpub. data) on the Azores Islands. We now describe the general features of...1980), the units studied are subplinian to plinian pumice fall deposits and ignimbrites, some with associated...Las Canadas is the source of a late Quaternary pumice succession comprising some 40 airfall and ignimbrite |  | | Report (issue) | | aggregate derived from valley-fill deposits of the Rio Grande and adjacent basins, used in concrete and block...cercana Las Cruces (Nuevo Mexico), ha sido de la más grande importancia, ya que se aprovechan 31 tipos de recursos...los depósitos de relleno de los valles del Rio Grande y cuencas adyacentes, utilizados en la fabricación...million including farms and ranches within the Rio Grande valley. Smaller towns of Silver City, Lordsburg...Las Cruces are located in the north-trending Rio Grande rift. The Basin and Range province continues southward |  | | Journal (issue) | | won befare) I .. ~I I - •' ·: .1c=1/ic r oa, andradite garnet from Brent Hill, Devon. ed .i:. e c:...fluornatropyrochlore, Pumice Quarry, Såo Miguel, Agua de Pau Volcano, Azores Islands,Portugal. Topaz Mineral...who has not ·-::fore) Winner 2023 David Roe Andradite garnet Brent Hill, Devon. Sec•ond pl311 David...fluornatropyrochlore, Pumice Quarry, Sao Miguel, de ·P-auVolcano, Azores Islands, Portugal. Second place: John...ffuomatropyrochlore, PumiceQuarry,SaoMiguel,Aguade PauVofcano, Azores fslar.ds. Topoz LundyIsland FOV4 mm Photo DavidRoe |  | | Catalog/List | | _ . Pure black mica plate new Analysis , Saga Quarry. Tvedalcn near Ix I £3 I x2 £6 2x2 £ 12 7 AN!lilTE...__ ____ _____ ___ _l~rtl_u~~-..fra.nce___ __ Rio Grande do Norte Brazil lx½£5 lxl 62 BISl\lOCLITE Rich...- Creamy white micro crystals in cavirties Saga Quarry, Tvedalen, Norway Ix½ £3 59 BOEHl\lITE AIO OH inNatrolite...AMITE Rich brown fibrous in matrix. Found Meldon Quarry, lx2 £2 lxl £1 _ ~_Ca SJ2.._ __ __ some ycm ago...black plates in Axinite and or pink Meldon Aplite Quarry. lxl £2.50 lx2 CHLORITE _ _ __ __ ···· -·· _ __ |  | | Journal (article/letter/editorial) | | corundophilite, 171 Analcime, Italy, anal., determination in pumice by X-ray diffractometry, io3; New South Wales,...topotactic transformation to mullite and silica, 195 Andradite, New Zealand, anal., M 14; stannian, from a tin...geochemistry of loveringite, 187 Cannington Park quarry, Somerset, djurleite, 172; durangite, 172; milarite... see EGGLETON (R. A.), 361 and M37 Cheesewring quarry, Linkinhorne, Cornwall, danburite, I7I Chernovite...iron-bearing melts, Pt-Fe alloys for, 271 Coombe Farm quarry, Henbury, Somerset, wulfenite, 298 Coon Creek, |  | | Journal (article/letter/editorial) | | rising for a few thousand meters above seafloor. The Azores is a typical example of such a relatively shortlived...benmoreite (sodic branch). It was established at the Azores that the benmoreite does not form a con tinuous...garnet with a high enough fraction of Ferich andradite (Table 5). The experimental products contain wollas...and the pale equant crystals are garnet of the andradite–grossular series. (d) Experiment Sp3 on the interaction...were found in benmoreites at Faial Island in the Azores (Franca et al., 2006), trachyte–phonolite series |  | | Book (volume) | | .......................175 Illinois – Hamilton Quarry Location Map ....................................siliceous gemstones; N 5 mi. on Rte. 5: (a) chert quarryBarite crystals, chalcedony, chert, siliceous oolites;...mines.) NW 2½ mi., the Southern Graphite Co. quarryGraphite. (The known deposits of graphite are mostly...depositsBarite crystals. FRANKLIN COUNTY WACO, in the Adah Quarry, as large quantities of excellent specimensoolitic...Creek, near the Tallapoosa R., a prehistoric Indian quarry, as occasional artifacts and as fine specimens |  | Scheibner, Birgit, Wörner, Gerhard, Civetta, Lucia, Stosch, Heinz-Günter, Simon, Klaus, Kronz, Andreas (2007) Rare earth element fractionation in magmatic Ca-rich garnets. Contributions to Mineralogy and Petrology, 154 (1) 55-74 doi:10.1007/s00410-006-0179-z | Journal (article/letter/editorial) | | = 110. Keywords Grandite Ca-rich garnets Andradite Rare earth elements Mt. Somma-Vesuvius Fractionation...composition. A comparison of igneous and metasomatic andradite-grossularite garnets with respect to chemical...phonolitic white pumice fall deposit of Avellino 3. The eruption sequence (Fig. 3) of these pumice deposits is...references herein). A detailed description of the pumice sequences of Avellino and Mercato is given by Cioni...Göttingen. About 1 kg of Mercato and Avellino 3 pumice was leached for 10 days in distilled water changing |  | | Book (volume) | | ⎯siliceous gemstones; d N 5 mi. on Rte. 5: (a) chert quarry⎯Barite crystals, chalcedony, chert, siliceous oolites;...mines.) d NW 2½ mi., the Southern Graphite Co. quarry⎯Graphite. (The known deposits of graphite are mostly...deposits⎯Barite crystals. FRANKLIN COUNTY WACO, in the Adah Quarry, as large quantities of excellent specimens⎯oolitic...Creek, near the Tallapoosa R., a prehistoric Indian quarry, as occasional artifacts and as fine specimens...Thousand Smokes; area fumaroles and volcanic pits⎯pumice and Sulfur; e Lake Iliamna, on beaches⎯agate and |  | | Book (volume) | | ⎯siliceous gemstones; d N 5 mi. on Rte. 5: (a) chert quarry⎯Barite crystals, chalcedony, chert, siliceous oolites;...mines.) d NW 2½ mi., the Southern Graphite Co. quarry⎯Graphite. (The known deposits of graphite are mostly...deposits⎯Barite crystals. FRANKLIN COUNTY WACO, in the Adah Quarry, as large quantities of excellent specimens⎯oolitic...Creek, near the Tallapoosa R., a prehistoric Indian quarry, as occasional artifacts and as fine specimens...Thousand Smokes; area fumaroles and volcanic pits⎯pumice and Sulfur; e Lake Iliamna, on beaches⎯agate and |  | Naimo, D., Balassone, G., Beran, A., Amalfitano, C., Imperato, M., Stanzione, D. (2003) Garnets in volcanic breccias of the Phlegraean Fields (southern Italy): mineralogical, geochemical and genetic features. Mineralogy and Petrology, 77 (3) 259-270 doi:10.1007/s00710-002-0219-y | Journal (article/letter/editorial) | | analysis showed that they are close to grossular or andradite end members, with only moderate solid solution...dimensions ao of 11.86 Å (grossular) and 12.04 Å (andradite). IR spectroscopy confirmed the presence of hydroxyls...Introduction The garnet group minerals grossular and andradite (grandites) occur mainly in contact metamorphic...limestone blocks, obsidian, scoriae, reddish altered pumice, and altered tuffaceous blocks. The trachytic blocks...clasts and blocks of pipernoid tuff. Grossular, andradite, marialite (Russo, 1997) and amorphous silica |  | | Book | | if you are looking at a huge piece of stone in a quarry or in a road cutting or at a cliff, you are looking...Range & Mt. Ranier, Wash. Used in construction. Pumice (4) White to gray, vesicular & sponge-like. Formed...groundmass; may also be porous, brittle or spongy as in pumice. Flow structures and banding may be common. Formed...to glassy. Perfect cleavage. Ocurs at the Kinkel quarry, N.Y., at Little Switzerland. N. Car. 54 _ 2-2V2...pyrite, sphalerite, chalcopyrite, bornite and andradite. Opaque. Luster bright metallic. Cleavage perfect |  | | Report (issue) | | carbonate rocks in a pumice deposit. Association: latiumite. Vesuvianite, andradite, grossular, pyroxene...clintonite, Distribution: From the Casa Collina quarry, in the Latera caldera, Pitigliano, near Grosseto |  | | Journal (article/letter/editorial) | | Grossular+Quarz+Wollastonite+Anorthite. 2. The Effect of Andradite and Albite. N. Jb. Miner. Abh. 142: 223 – 247...Segnitit-Plumbojarosit-Kintoreit-Mischkristalle aus Portugal. Beih. z. European J. Miner. 8: 109. Hoffmann...rockmagnetic and mineralogical studies on dacitic pumice from the Pinatubo eruption (1991, Philippines)...Intercrystalline exchange of Al and Fe3+ between grossular-andradite and clinozoisite-epidote solid solutions. N. Jb...K.T. (2005): Isokite from Senhora de Assunção, Portugal: new Find and new data. N. Jb. Miner. Abh. 182: |  | Rispoli, Concetta, Graziano, Sossio Fabio, Di Benedetto, Claudia, De Bonis, Alberto, Guarino, Vincenza, Esposito, Renata, Morra, Vincenzo, Cappelletti, Piergiulio (2019) New Insights of Historical Mortars Beyond Pompei: The Example of Villa del Pezzolo, Sorrento Peninsula. Minerals, 9 (10) 575 doi:10.3390/min9100575 | Journal (article/letter/editorial) | | wereconstituted characterized bycryptocrystalline pumice (13.3 vol.%), carbonate fragments vol.%; vol.%)...5b). The aggregates were constituted mainly by pumice (13.3 vol.%), volcanic and carbonate fragments...matrix Figure (28.3 vol.%) (15.5 vol.%; Figure pumice (15.0 leucite-bearing scoriae (4.6 vol.%; 5h),...fragments fraction (7.1 vol.%). (15.5 vol.%; 5g), pumice Figure 5h), leucite-bearing scoriae (4.6 vol.%;...characterized by a prevailing volcanicIn particular,(pumice fictile matrices can be either characterized by |  | | Journal (article/letter/editorial) | | more Mnrich quartz-spessartine rocks and massive andradite rocks over distances of less than 10 cm within...syn-tectonic 50 veining of competent massive andradite skarn beds. The veins contain quartz-albite-epidote-ferroan...sandstone and pumice±lithic breccias 6686000 Major feldspar-phyric rhyolitic-dacitic pumice±lithic volcaniclastic...volcaniclastic units Major quartz-feldspar phyric rhyolitic pumice±lithic volcaniclastic units Lower footwall rhyolitic...2–4 cm clasts that are interpreted to have been pumice clasts. The unit is approximately 50 m thick, but |  | | Catalog/List | | ANDESI NE Fel ds par AN DORITE Pb Ag Sb S ♦ ANDRADITE garnet group ♦ ANGLES ITE Pb SO/4 ANHYDIUTE Ca...paper available. Rich grey crystalline mass. Saga Quarry, Tvedalen near Larv ik, Norway Ix I £1.50 Ix I...Chrysotile. pale grey-green mass ive. County Bri dge Quarry,Lizard ,Cornwall Jx I £ I I x2 £2 Loch Scridain...Hingston Down Rich silvery masses with Chalcopyrite Quarry,Cornwall ,England Apple green coatings on granite...Hingston Down Mine,Hingston ,Cornwall covered Saga Quarry, Tvedalen, near Brown fibrous mass in feldspar |  | | Book | | .. El Sanlin Mine......................... San Miguel de Allende ........... Queretaro ................abruptly. This great barrier runs from the Rio Grande nearly to the Isthmus of Tehuan tepec. Both of...west of Santa Ana and 62 miles Montana, La San Miguel south of Ajo, Arizona. To reach this Minerals Reported...Minerals Reported I Alunite Amphihole group Andradite Azurite Barite Bornite Calcite Chalcocite Chalcopyrite...you will ride over in the area comes from this quarry, 12 miles south of Tepic. g ^ §8* Y y *_7 vs, |  | | Journal (article/letter/editorial) | | 78 s Major feldspar-phyric rhyolitic-dacitic pumice±lithic volcaniclastic units s 80 1-6 m thick...rhyolitic-dacitic ash-siltstone, crystal sandstone and pumice±lithic breccias St Ryllshyttan a Je c s Major...Major quartz-feldspar phyric rhyolitic pumice±lithic volcaniclastic units 80 s c s Lower footwall...Boliden Mineral data. Display depth ±20 m. Mole % andradite (Adr) in garnet and hedenbergite (Hd) and johannsenite...36 Almandine 3.41 1.42 Grossular 18.07 23.37 Andradite 75.08 74.13 Calderite – – Khoharite – – Skiagite |  | | Report (volume) | | Elder "post office; and in Lee County in Chewacla quarry, near Opelika. Marble (noncrystalline). Variegated...southwest of Kingman in the McConnico district. Andradite. See Garnet. " Anglesite (sulphate of lead). Cochise...mining districts; as yellowish to dark-brown andradite at Clifton. Pima County, in Twin Buttes and Silver...camp (large body). Yavapai County, Miller Bros, quarry. Quartzite. Greenlee County, quarried for converter...Orizaba and other claims, 30 miles south of Casa Grande, associated with minor amounts of vanadinite. Santa |  | | Journal (issue) | | 2.4-2.8 M N E R A L s AN :0 )> j I I ANDRADITE IS ONE OF THE RARER MEMBERS OF THE GARNET FAMILY...ATTRACTIVE GEMSTONES Like all forms of garnet, andradite is a member of the silicate group of minerals...additional inclusions of titanium or chromium. Andradite conforms to the cubic system of symmetry: although...room temperature. :0 m z m :0 The finest andradite is usually green but less valuable specimens may...(1763-1838). Before it was given its present name, andradite was known as lime-iron garnet. T he garnets are |  | Sigmarsson, Olgeir, Laporte, Didier, Carpentier, Marion, Devouard, Bertrand, Devidal, Jean-Luc, Marti, Joan (2013) Formation of U-depleted rhyolite from a basanite at El Hierro, Canary Islands. Contributions to Mineralogy and Petrology, 165 (3) 601-622 doi:10.1007/s00410-012-0826-5 | Journal (article/letter/editorial) | | mingled with darker coloured basanitic pumice. The basanitic pumice is relatively crystal poor with a few...(Martin and Sigmarsson 2007b). Moreover, rhyolitic pumice was produced during the 1971 Teneguı́a eruption...archipelago. Elsewhere, small volumes of felsic pumice have recently been discovered both during geothermal...magma production emits a small volume of felsic pumice without magma of intermediate composition. In this...study, the composition of the peculiar rhyolitic pumice of El Hierro is shown to represent a differentiated |  | | Journal (article/letter/editorial) | | years ago. It was principally emplaced as unwelded, pumice-rich flow units with an estimated volume of 10...zoning among crystals of a single phase. Other pumice types, and dark, trachyandesitic inclusions separated...mineralogical data for an extensive suite of WTT pumice samples. Field relations The ages of Roccamonfina's...overlain by 5-8 m of bedded WTT ash and pumice horizons. Coarse-pumice layers in this bedded sequence are...turn by a peculiar horizon of large (to 80 cm) WTT pumice blocks (sample 2 - Fig. 1) embedded in a matrix |  | | Journal (article/letter/editorial) | | A, corresponding respectively to almost pure andradite and a granditic phase. Mean compositions determined...centre of which collapsed in the wake of violent pumice eruptions some 35oo years ago, leaving an area...dodecahedral twinning, tallying with descriptions of andradite-rich garnets by Goldschmidt ( I 9 I I ) , Holser...I2"052-~-O'1~O2/~ and differs only negligibly from that of andradite (powder diffraction file card ro-288); the other...two distinct groups: almost pure andradite (An97SplAlm2) and andradite-grossular mixed crystals (averaging |  | | Report (issue) | | along the margin of the Colorado Plateau and Rio Grande rift, northern New Mexico, by Gonzalez and Dethier...terminates in Albuquerque, focus on features of the Rio Grande rift. We will visit the New Mexico. The first day...field, with stops at a classic the present-day Rio Grande rift and also examine the Pro- shield volcano —...(Figs. 1, 2), and a general introduction to the Rio Grande rift (see IGC guidebook for Day 3, Callender et...F., Hawley, J. W., and Keller, G. R., 1989, Rio Grande rift: 28th International Geological Congress, Guidebook |
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Pumice quarry, Ribeira Grande, São Miguel, Azores, Portugal