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| exploration of copper-gold at Reko Diq in Chagai district of Balochistan province has brought Pakistan amongst...and Partisan areas near Krinj village, Chitral district. Stibnite (Sb2S3) is found as veins, lenses and...(Ahmad 1986). All these deposits occur in Chagai District of Balochistan province. Similar deposits may...from Saindak porphyry copper deposits in Chagai district of Balochistan (The production figures are given...discovered by the GSP at Dilband in Kalat district, Uthal in Lasbela district of Balochistan and Nizampur area |
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| 6/20/68 6/21/68 9/22/71 10/10/71 7/03/72 Locality (County, State) Gunnison, CO Gunnison, CO Weld, CO Lewis...SUBB SUBB LiA LiA B LiA SUBB HVBB SUBA SUBB An HVCB B Li SUBA An An An Li SUB LVB Li Comments Channel...include quartz-101 = 2.84; calcite-014 = 2.0; plagioclase (oligoclase)-202 + = 1.55; and ankerite-014 =...Component Crystalline Fraction Repotted Rank Quartz Plagioclase Microcline Kaolinite Chlorite Montmor. Illite...18±9 A 17±9 W A W A W 2±0.4 A 2±0.4 LiA SUBB HVBB SUBA SUBB 4±1 14±2 29±3 4±2 4±2 3±2 8±1 2±0.3 2±0 |
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| members of the :New Red Sandstone Series in that district ; and, in the following communication, I have...the flanks of the Haldon Hills, in the Exeter district, and in the Crediton and Stogumber valleys. They...'tinolite. Cyanite. Biotite. Microcline. Chhwite. Plagioclase-felspars. Muscovite. Orthoclase. Sphene. Ill...that is known to occur in the Red rocks of this district. I I I . PHYSICAL CBARACTE1RISTICS OF THE FINER...and south of Devon, especially in the BroadClyst district. Around the Somerset, inliers of older rocks the |
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| ]taverfordwest, about 10 miles away. I n t h a t district there is practically an u n b r o k e n succession...pre-Cambrian rocks of St. David's or of the Hayscastle~ district are there any rocks that have much in common with...description, and penetrated only by a few basic sills. The suba~rial character of the flows seems to be proved by...II=Soda-felsite, south-east of cairn on Castletimon Hill, Co. Wieklow (Ireland). Geol. Mag. 1889, p. 546...mainland at Crabhall, north of Dale, where a large quarry has been opened for road-metal. I n the hand-specimen |
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| András Nagymarosy • Tibor Szederkényi Geology of Hungary Editor János Haas E€ otv€os Loránd University...Geophysical and Space Science Research Group Budapest Hungary ISBN 978-3-642-21909-2 ISBN 978-3-642-21910-8.... . . . 3.2.2.1 Continental Formations, North Hungary . . . 149 . 151 . 155 . 156 . 156 . 159 . 159... 3.4 4 Brackish to Marine Formations, North Hungary . . . . . . . . . . . . . . . . . . . . . . . ...2.3.1 Northwest Hungary . . . . . . . . . . . . . . . . . 3.2.3.2 Northeast Hungary . . . . . . . . |
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| THE RHOBELL FAWR DISTRICT. 46~ 16. T H ~ GEOLOOY 0]c l h e I{I[OBELL FAWR DISTRICT ( M E R I O ~ET~)...shown in the appended sketch-map (.fig. 1). The district examined lies within the parish of Llanfachreth...Thomas Belt, 1 several references are made to the district including Rhobell Fawr, and the broad distribution...part of the area, and, even more so than in the district south of the Mawddach Estuary, give rise to unusually...'On the p. 536. Lingu~a Fl~gs of the Dolgelley District' Geol. Mag. 1867, 212 Downloaded from http://jgslegacy |
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| controlled stabilization of eclogites within plagioclase-bearing granulite facies anorthosites. Readers...gneisses between the eclogite pods) in the 'Selje' district, curiously considered to contain several 'peculiar'...lithotype name eclogite as plagioclase free rocks, Smith's insistence that plagioclase must also be absent in...logically, cates that the pressures required for plagioclase keeping works on particular regions or volcanoes...of of scientists coming together to discuss their suba symposium held at the International Volcano- ject |
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| the granite. The Lower Aluminous Series in this district can be divided intc~ zones: the lower zone characterized...s granite, which was the main intrusion of the district, consists of large ol'thoelasephenocrysts, closely...and contains frequently less orthoclase than plagioclase. (iii) T h e f i n e - g r a i n e d g r a n...show the same features, so a description of Mill Quarry will suffice (as being the clearest). This is about...deep. Trees, shrubs, and talus hide most of the quarry ; but an adit driven through the south-western |
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| relating to individual nining properties in the district. Respect{ully subrnitted, Wrr"eun A. NEr.soN...deposits Igneous rocks............ The mines of the district ?3 74 74 74 75 z6 ................. Gold...and prospects ..................... Culpeper County Culpeper mine . 67 6? 6? 68 oo 6g ...... j....8 ?8 ?8 Tenr,r or CoNtENts The mines of the district lcontinued) Introduction (continued) Gold mir-res...mir-res and prospects (continued) Culpeper County (continued) Morgana mine PAGE ............. Location |
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| logically, cates that the pressures required for plagioclase keeping works on particular regions or volcanoes...of of scientists coming together to discuss their suba symposium held at the International Volcano- ject |
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| the rock‐forming minerals (e.g., amphibole and plagioclase) to provide constraints on possible mechanisms...et al. 2010). Numerous small dykes (e.g., Skalka Hill near Bánov) or small bodies (like trachyandesite...trachyandesite to trachydacite cedar-tree laccolith on Bučník Hill near Komňa, Fig. 2a–d) intruded the flysch sediments...(GPa) 0.32 to 0.39 0.39 to 0.60 – 0.60 to 0.63 – Plagioclase–liquid thermometer – equation 24a, hygrometer...(wt.%) 4.9 to 5.4 4.3 to 4.9 – 4.4 to 5.5 – Plagioclase–liquid barometer 25a (Putirka 2005, 2008) P (GPa) |
 | McLemore, Virginia T., Donahue, Kelly, Breese, Michael, Jackson, Meghan I., Arbuckle, Jeffrey, Jones, Glen (2001) Introduction to mineral-resource assessment of Luna County, New Mexico. Open-file Report 459. New Mexico Bureau of Geology and Mineral Resources doi:10.58799/ofr-459 | Report (issue) |
| MINERAL-RESOURCE ASSESSMENT OF LUNA COUNTY, NEW MEXICO Virginia T. McLemore, Kelly Donahue, Michael...New Mexico State Land Office 1 SUMMARY Luna County, in southwestern New Mexico (Fig. 1) is not well...metals and nonmetals have been produced from the county from 1876 to 2000. Much of this production has...found in 16 mining districts in the county. The Cooke’s Peak district ranks 5th in lead production in the...state and 9th in zinc production and the Victorio district ranks 7th in lead production in the state. Native |
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| selvages around the veins characterize the deposit. Plagioclase and alkali feldspar are low in the greisen zones...zones while K-feldspar shows more increase than plagioclase in the potassic zone. Quartz is uniformly high...85 Alkali feldspars 27.25 27.85 28.12 28.35 Plagioclase 7.52 7.62 8.95 10.50 Muscovite 10.12 10.50 8...are composed of light pink colour quartz with plagioclase, muscovite, biotite and occasionally topaz and...generally composed of quartz, alkali feldspar, plagioclase, muscovite and zinnwaldite with some variation |
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| constituents include fragments of olivine, augite, plagioclase, and black or yellow glass enclosing minute ...between Matapu Point and Autea Point, while the little hill in Atanui Valley probably represents the plug of...rises to about 1300 feet above sea-level. Naruii Hill is about 800 feet high, but elsewhere the general...show vesicular structure. Owing to the action of suba~rial erosive agents, the original form of the volcano...only was the raised plateau largely degraded by suba~rial erosion, and reduced to a low undulating plain |
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| Springer-Verlag1990 Origin of the acidic volcanics of the Tolfa district, Tuscan Province, central Italy: an elemental...southern part of the Tuscan Province, the Tolfa district, range in composition from dacites to rhyolites...0.7112. The four major eruption centres of the district can be distinguished geochemically. It is shown...areas, referred to in this paper as the Tolfa district, form the southernmost part of the Tuscan Province...dacites, trachydacites and rhyolites from this district. The genesis of the volcanics is discussed in |
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| chlorite and reduction of plagioclase, leaving only pyroxene and plagioclase in the residue. The ratio...t89 116 14.2 26 38.8 19.3 0.42 29.41 0.00 O. O0 Suba ] k Basa]t 0.026 0.70427 0.70418 E 166 182 188...246 128 18.4 22.8 40.0 18.3 0.14 24.28 0.00 0.00 Suba I k Basal t 0.019 0.70398 0.70390 E 200 206 240...0 294 238 167 217 1 .22 4.64 24.99 O. O0 0.00 Suba ] k Basa]t 2.80 2.82 0.21 0.19 7.99 120020 ...314 121 23.2 23.0 34.3 17.2 O. O0 4.91 7.23 0.00 Suba I k Basal t North China, diangsu Basin Rb/Sr |
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| approximately 230 km south-west of Trondheim in 'the county of More and Romsdal. The rocks form part of the...boundaries and mantles of oligoelase (An 20-30). This plagioclase i~; commonly a~atiperthitic, often coarsely so...to be tiae case in these gnei,sses since the plagioclase present is oligoclase ralher than albite and...development of the granulite-facies clinopyroxene-plagioclase symplectite texture from a more omphacitic, higher...K and Ca, causes this element to be foun~ in plagioclase and to a les~er extent, hornblende The relationshiips |
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| Santa Cruz, where a few weeks were spent. In that district the Patagonian and the Santa Cruz Beds are excellently...minerals and is quite fresh, together with the plagioclase and monoclinic pyroxene, is remarkable, since...the divisional planes in the quartz-porphyry to quarry it for use in Buenos Aires as paving-stone. The..." In the dense basalt, olivine, augite, and plagioclase were visible, with minute flakes of a mineral...summit, a natural windowlike aperture, from which the hill takes its name. That the wide-spreading basalt-flows |
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| moderately porphyritic with phenocrysts of olivine, plagioclase and minor clinopyroxene. Their glass and bulk...moderately porphyritic, including phenocrysts of plagioclase and orthopyroxene with or without clinopyroxene...andesites are highly porphyritic with phenocrysts of plagioclase, orthopyroxene and clinopyroxene , and have the...or spherulitic intermediate zone. Olivine and plagioclase are present both as H. Ishizuka 78 et al...margin of basalt containing olivine (01) and plagioclase (PI) phenocrysts (one nicol, scale bar: 1 mm) |
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| breadcrumb " surface. QUARTZ. T11is c ccur s in suba n gular grain s. which a re clea r except for a...felspar grains were found. One of these was a plagioclase felspar showing lamellar twinning, a refractive-index...biaxial positive, and was probably an a ndesitic plagioclase. The other grain was orthoclase, with a refractive...from deposits of similar age and from the same district, the sandstone from the Trimpley Fish Zone has...of the main dir ecti ons of dr ain age for the district. That the lands bord erin g t he lower reaches |
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| from Llano rhyolite (llanite), north-central Llano County, Texas MrcHl.Br E. Zor,nNsxy Planetary Materials...phenocrystsfrom the Llano rhyolite (llanite), Llano County, Texas, derive their coloration from Rayleigh scattering...unusual controversy surrounds blue quartz from Llano County, Texas. In the initial report ofthis occurrence...phenocrysts from the Llano rhyolite, from Llano County, Texas, locally called "llanite" (Iddings, 1904)...Long, 1976) thaLthe llanite rhyolite was affectedby suba very low grademetamorphic event (subgreenschist) |
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| AND PETROLOGY OF THE MANGANESE ORE OF THE RHIW DISTRICT (CARNARVONSHIRE). By AI'ST]:" W!LLlA~I \YOODLA"D...confirms this, the norm giving 73 per cent. of plagioclase of composition Ab z4An ,. It is impossible to...ORE OF THE 1{H1W DISTRICT. [To face p. 208. ?vIAXGAXESE ORE OF THE RHIW DISTRICT. 20g of 12'-17°...originally molten rock. Rarelv, fragments of twinned plagioclase felspar (again albite) arc recorded. In all cases...entary organi c rem ains is fu rt her proof of th e suba queous or igin of this rock. (iv) . T hEW eathering |
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| Saguache County. 2. Geology Colorado Gunnison County. 3. Uranium ores Colorado Saguache County. 4. Uranium...Uranium ores Colorado Gunnison County. I. Title, II. Series: Geological Survey professional paper ; 1457...Regional geology .................... Cochetopa district ................... Geologic setting ...........3 6 6 6 7 10 12 12 13 13 19 23 Marshall Pass district ........................... Geologic setting ........ 3. Generalized geology of the Cochetopa district, Saguache and Gunnison Counties, Colorado ... |
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| spinel-bearing peridotites lies between that of plagioclase (KUSHIRO and YODER, 1966) and garnet-bearing...Quintin, is significantly less ‘refractory’ than t,he subA further difference in bulk composition is illustrated |
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| rocks are 270 Drexler et al. LITHOS16 (1983) SUBA~.KALINE Z _o ,~ MELTS ~I¢// i g " ~ MELTS... & Neuvonen, K. J. 1952: Thermochemistry of plagioclase and alkali feldspars. Am. J. Sci. (Bowen Vol...between volcanic glass and coexisting sanidine and plagioclase feldspars. Geochim. Cosmochim. Acta 43, 171-175 |
