 | | Book | | cover photo: Agate, polished. Nowy Kościół, Lower Silesia, Poland. Sample 260x260xl30 mm. Photo R. Molenda...320x260xl IO mm. Agate, polished. ~owy Kościół, Lower Silesia, Poland. Photo 30x60 mm, sample 320x260xl IO mm...160xl50x30 mm. Sphalerite, polished. QIJ...7.1sz, Poland. Photo 30x70 mm, sample 160xl50x30 mm. , Sfale111...okaz 230xl50xl5 mm. Sphaleńte, polished. Olkusz, Poland. Photo 50xl40 mm, sample 230xl50xl5 mm. Fot. 6...the oldest and the best technical academies in Poland will celebrate its 90th jubilee in 2009. Mining |  | Powolny, Tomasz, Dumańska-Słowik, Magdalena, Sikorska-Jaworowska, Magdalena, Wójcik-Bania, Monika (2019) Agate mineralization in spilitized Permian volcanics from “Borówno” quarry (Lower Silesia, Poland) – microtextural, mineralogical, and geochemical constraints. Ore Geology Reviews, 114. 103130 doi:10.1016/j.oregeorev.2019.103130 | Journal (article/letter/editorial) | | spilitized Permian volcanics from ,,Borówno” quarry (Lower Silesia, Poland) - microtextural, mineralogical, and...spilitized Permian volcanics from ,,Borówno” quarry (Lower Silesia, Poland) - microtextural, mineralogical, and...spilitized Permian volcanics from ,,Borówno” quarry (Lower Silesia, Poland) - microtextural, mineralogical, and...Technology, 30 Mickiewicza Av., Krakow 30-059, Poland; *email: powolny@agh.edu.pl b Polish Geological...Research Institute, 4 Rakowiecka St., 00-975 Warsaw, Poland Abstract Two forms of silica mineralization, i |  | | Report (volume) | | features.___-___---______-_________-___--_____ 18 Lower Cambrian series..-._--_----__-_-_---____--______...conglomerate._--_--__--_-__-____--___.___ Brighton melaphyre.__.---_-__----________________ Cambridge slate...diabase of the great Medford dike in the former quarry at Pine Hill, Medford- _ 42 10. Squantum tillite...________ 42 11. Cambridge slate in the former Mystic quarry, Somerville___ 43 12. _4, Great Hill or Winthrop...(see fig. 1) and includes nearly all of Suffolk County and parts of Middlesex, Essex, Norfolk, and Plymouth |  | | Journal (article/letter/editorial) | | greenstone differentiates.. 196 Flow at South Rang! quarry 168 Origin of the copper deposits 96 "Big»trap...a pegmatitic lava flow at South Range Quarry, Houghton County, Michigan 202 olivine-rich basalt through...less Classification of Lavas intensely altered to albite, prehnite, chlorite, The bulk of the flows in the... The pegmatitic rocks have the composition of "albite diabase". To correlate the textural terms of the...dacite porphyrite basalt andesite* dacite melaphyre basalt andesite* dacite rhyodacite felsite aplite |  | | Report (volume) | | dikes............................................ Albite diorite..........................................erection of a dam 125 feet high at the mouth of the lower basin. Water rights are held by other claimants...valley bottoms; the finest trees are found in the lower part of the valley of Lemon Creek, where one tree...that the formation is of either Upper Jurassic or Lower Cretaceous age. The older view that the rocks of...gold. A common change is a large introduction of albite, which is shown to be a regional feature of the |  | | Journal (article/letter/editorial) | | Keweenawanrocks of Michipicoten Island. He found melaphyre,trap, amygdaloid,quartzporphyry,porphyrite,and...describedgabbro or hypersthenite,black porphyryor melaphyre,porphyryand amygdaloid. The firstnamed was probablya...second a diabase. Pumpelly,"in 1873, described melaphyre,trap, and amygdaloid without microscopicstudy;...microscopicstudy; he distinguishedthree kinds of melaphyre, coarse-grained,fine-grained,and melaphyreporphyry. Correlationsof...helpful. Marvine,3in the same year, described melaphyre,trap, diorite, and amygdaloid. Pumpelly later |  | | Journal (article/letter/editorial) | | three specimens, on a tablet numbered ft, from the Lower Ludlow of Mary Knoll, all of which were referred...original minerals by chemical processes. At Winslade quarry, in the same block, we note an ordinary diabase...Eickham Sands, we have granules of felspar,4 probably albite, embedded in a matrix consisting chiefly of chlorite...acid, lime -— + Carbonic acid = + -? n-T^ felspar albite calcite. Alumina, lime-soda , n -L • •! . • r^... entirely free from decomposition and possibly albite. The decomposition of a lime-soda felspar such |  | | Journal (article/letter/editorial) | | Dyke. (e) The Augite-porphyrite Series. (d) The Melaphyre Dyke ((e)f) Tho Piorite-porphyrite. The Olivine-dolerite...consists of slates, which are usually held t~ be of Lower Silurian age, but in the south of the island Carboniferous...of Cumming. 3. Upper or Poolvash limestone. 2. Lower or Castletown limestone. 1. Conglomerateand sandstone...subsequently. (d) The Melaphyre Dylce.--This dyke intervenes between the Lower Limestones and the augite-porphyrite...augite-porphyrite eruptions, and therefore as probably of Lower Carboniferous age. (e) 17~ePicrite,.Torlohyrite |  | | Journal (article/letter/editorial) | | granite, aplite, soda aplite, quartz mica diorite, albite mica syenite, dolerite. BRO~XE, WILLIAM R. (19228)...Australia Geol. Surv. B. 68, 206-287. W. Australia: 5; albite, albitc porphyry, chlorite slate, srricit’e phyllit(e...fuchsite-quartz-carbonate rock, graphitir schist, albite porphyrite quartz-dolerite greenstone, quartz-dolerite-tourmahne...dolerite. JACK, R. LOCKHART (1914) The geology of the County of Jervois, and of portions of the Counties of...reprinted). MAHONY, DANIEL J. (1925a) Bullengarook slate quarry, near Gisborne: Victoria, Geol. Surv. Rec. 4, Pt |  | | Report (volume) | | .................................... Worcester County, Mass....................................... Westboro............................................. 132 Lower Cretaceous........................................................................ 150 Berkshire County.................................................. 195 Dikes cutting the Quincy granite in Essex County, Mass......... 196 Aplite........................ 204 Nephelite-bearing dike rocks of Worcester County, Mass......... 204 Distribution............... |  | | Journal (article/letter/editorial) | | Early-Permian trachyandesites from Świerki quarry (Lower Silesia, Poland) - constraints on spilitization supported...Early-Permian trachyandesites from Świerki quarry (Lower Silesia, Poland) - constraints on spilitization supported...Early-Permian trachyandesites from Świerki quarry (Lower Silesia, Poland) - constraints on spilitization supported...SC b RI Mickiewicza Av., Krakow 30-059, Poland Poland * AC CE PT E D MA NU Corresponding author...Abstract Trachyandesites from Świerki quarry (Lower Silesia, Poland), related to the post-collisional extension-related |  | | Report (issue) | | ________________________________________ Geology of the lower western slope of the Sierra Nevada_____________... .. 14. Detailed geologic cross section of the lower levels of the Central Eureka mine. __________________...through the Melones mine along the line of the lower winze on the 1,100-flat vein__ __ _ _ _ _ _ _ _... extending from Plymouth to Jackson, in Amador County. Mining began in 1849, on the Mariposa grant at...generally to be albite. At present it is an open problem how much of the abundant albite in the thick belts |  | | Report (issue) | | DEPOSITS OF THE MATCHWOOD QUADRANGLE, ONTONAGON COUNTY, MICHIGAN By Robert F. Johnson and Walter S. White...DEPOSITS OF THE MATCHWOOD QUADRANGLE, ONTONAGON COUNTY, MICHIGAN ' ~ By Robert F. Johnson and Walter...The Matchvood quadrangle is in central Ontonagon County, just west of the Ontonagon River and its Middle...exposures in the vicinity of Portage Lake in Houghton County (White, Cornwall, and Swanson, 1953), underlies...thickness of the Portage Lake Lava Series in Ontonagon County, compared to 1-3 percent on the Keweenaw Peninsula |  | | Journal (article/letter/editorial) | | the Kensington Mine and Mount Lion Mine, Boulder County, crystallised and crystalline. Crystals srnall...John Jay Mine, in the Central District, Boulder County, granular masses of tellurium are sometimes found...39 C. A. B. Sipylite, a New Niobate from Amherst County, Virginia. By J. W. M A L L E T(Am. Jour. of Sci...found in the neighbourhood of the geysers in Sonoma County, California. + Published on 01 January 1878....orthoclase, the prismatic angle approaching that of albite. Referring to the above analyses, the sodium felspar |  | | Journal (article/letter/editorial) | | emerald was surrounded by a zone of radiated red albite, this again by R thin layer of muscovite. The analyses...investi- gated occur at Cortland, in Westchester county, New Pork. The facts observed appear to sustain...in origin, and differ from the other Westchester county rocks, because the metamorphic process had to do... in nearly the same proportion. Melaphyres of Lower Silesia. By A. P. COLEMAN ( J ~ h r bf. . Min.....hornblende occurs in the rocks from Waldenburg ; t,he melaphyre from Guckelberg also contains biotite. Olivine |  | | Journal (article/letter/editorial) | | series with a minimum thickness of 15,000 feet (the lower horizons not being known because of faulting). Individual...10 inches; the uniform-appearing ophite in the lower part of the flow was sampled every 10 feet. Altogether...ilmenite, albite, orthoclase, and quartz content. Olivine occurs in the norm, especially in the lower part...DIFFERENTIATION W IT H IN INDIVIDUAL LAVAS 517 side, albite, orthoclase, quartz (which is reduced to one-tenth...anorthite, hypersthene, and olivine. The ratios both of albite to anorthite and of orthoclase to plagioclase are |  | | Journal (article/letter/editorial) | | region of the system NaAlSiOr (nepheline)-NaAlSirOs(albite)-H:O,analcite was synthesized from glassesof a...Biaxial specimensfrom the same locality must be of lower symmetry' Single crystal work has not been done...resolution of the Ka1 and Ka2 peaks in analcite of albite composition is not so wel defined, and this is...specimensof analcite from sedimentaryrocks (Yavapai County, Arizona) u'ere kindly sent by Dr' C. S. Ross ior...Volcanic rocl s Ironstone shale (?) Teschenite Melaphyre Porphyritic rock In fissuresin phonoliih In druses |  | | Book (edition) | | aggregate of 22 PETROLOGY. epidote, zoisite, albite, etc.) from plagioclase felspar. Mechanical alteration...amygdaloidal cavi ties of old vesicular lavas (melaphyre, basalt, etc. ) . FELSPAR GROUP. The felspars...felspars are orthoclase and sanidine. Triclinic are albite, oligoclase, andesine, labradorite and anorthite...to repeated (" polysynthetic " ) twinning on the Albite type. Considered chemically, the felspars are silicates...Al2O3,2SiO2) . They occur in nature as orthoclase, albite and anorthite respectively. By their combination |  | | Report (issue) | | Prehnite-pumpellyite facies metamorphism in central Aroostook County, Maine eee re il. C20 ea Tt Dorothy A. Richter... Borns Nickeliferous pyrrhotite deposits, Knox County, southeastern Maine Er it atte era (Seale 8 George...thickness of 1,310 m, is a southerly facies of the lower part of the Cambridge Argillite. (4) The Cambridge...Boston Bay Group (with melaphyre) Member Roxbury Conglomerate (with melaphyre lentil) Mattapan Volcanic...Hills / Thrust Anticline a BRAINTREE Fault Lower Falls Anticline 1°15 71°00 kilometers f) Figure |  | | Journal (article/letter/editorial) | | Coatham Beck, near the village of Elton, in the county of Durham. Between Nunthorpe and Stainton it is...phenomenon which must be Fig. 1.--Dying-out of Dyke in Quarry near Gockj~eld. * ' Yorkshire Lias,' Tare & Blake...Here the dyke was quite vertical. I n the next quarry to the west, the width of the entrance was about...side of the main dyke, near the entrance to this quarry, is a narrow dyke, about 4 feet wide, of similar...E S O N north margin of the dyke, in the large quarry at Coekfield, and at the base of the intrusive |  | Götze, J., Tichomirowa, M., Fuchs, H., Pilot, J., Sharp, Z.D. (2001) Geochemistry of agates: a trace element and stable isotope study. Chemical Geology, 175 (3) 523-541 doi:10.1016/s0009-2541(00)00356-9 | Journal (article/letter/editorial) | | Frydstejn, Bohemia (Permocarboniferous)a 17-1 melaphyre 54.0 102 17-2 agate, white 0.1 -1 17-3 agate,...agate 0.2 1 53 3 7.85 0.03 1.41 0.10 Ardownie Quarry, Scotland (DeÕonian)e 20-1 andesite 35.5 69 20-2...0.5 5.1 0.9 5 1 0.3 40.0 0.4 - 0.2 Ardownie Quarry, Scotland (DeÕonian)e 37300 632 7.8 27000 590 20...Groppendorf, Germany (Permocarboniferous)h ¨ 48-6 melaphyre 53.1 101 44 48-7 agate 1 2.2 5 -3 48-8 agate 2...from the rim to the core of the agates, and Ž2. lower concentration of trace elements in quartz incrustations |  | | Journal (article/letter/editorial) | | identified as albite, the alkali feldspar as low-sanidinemicroperthite (is the albite guest 8 In northernMichiganthe...northernMichiganthe term "melaphyre"is appliedto "flows that are fine-grainedthroughoutand have no dis-...surfaceof the massprior to extrusion of the overlying melaphyre flows (the slopesare due at least in part to erosion;...of thicknessthus exists, but, assumingthat the lower contactdips 35ø, the maximummeasurable thickness...conspicuous.Figure 4 picturesa representative Fro. 5. Lower contactof quar•-porphy• (darkest gray) inclusion;the |  | | Journal (article/letter/editorial) | | metamorphic rocks of sedimentaryorigin and probably of Lower Torridonian age. They include limestones, phyllites...No sediments are found intermediate between the Lower Torridonian and those of the Glacial period, the...matrix of feldspar (perthitic orthoclase, with albite in some places) usually micrographically intergrown...usually potash feldspar and quartz with a little albite, formed by the combination of the dissolvet silica...general feldspar is perthitic orthoclase with some albite. The rocks are intermediate between the syenites |  | | Journal (article/letter/editorial) | | desmine?), labradorite, orthoelase, sanidine, albite, oligoclase, iron-chlorite, mica, diallage, and...even by the aid of a magnifying glass, as in melaphyre, aphanite, phonolite, basalt, &c. ; (2) the mass...quartz. Essential constituents: Orthoclase, talc, albite, sanidlne, quartz, mica, chlorite, hornblende;...parts. Chief constituents : sanidine and potash-albite indistinctly mixed, often with prominent sanidine-crystals...reddish-brown orthoclase, or, instead, oligoclase or albite, as the chief constituent ; with it are combined |  | | Catalog/List | | specimen from the Apache mine, near Globe, Gila County, Arizona GLOBES AND ATLASES ...... . 79 Sharp...calcium hydroxy-silicate. California Riverside County, Crestmore. White prismatic crystalline on merwinitegehlenite... AJOITE Copper aluminum silicate. Arizona Pima County, Ajo, New Cornelia mine. Sky- blue micro xls and...and coatings on monzonite . Arizona Pima County, Ajo, New Cornelia mine. S.ky-bJue crystals and masses.............. ALBITE Sodium aluminum silicate. CLEAVELANDITE California San Diego County, Himalaya mine |
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