 | | Report (issue) |
| garnetkyanite schist of Horse Creek (cgk), and distinct marker units of graphitic schist (cgs). The metamorphic...This melange is predominantly biotite-muscovite schist (CZfs) containing lenses and pods of amphibolite...Leesville and Purnell, although colluvium extends to lower elevations. Jd Olivine diabase (Early Jurassic)...interpretation cgk Garnet-kyanite schist of Horse Creek-Coarse-grained aluminous schist having abundant, conspicuous...garnet cgs Graphitic schist Gray to black schist composed mainly of quartz, graphite, and muscovite; porphyroblasts |
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| MISCELLANEOUS NONMETALLIC PRODUCTS. A COMMERCIAL OCCURRENCE OF BARITE NEAR CARTERSVILLE, GA. By C. W. HAYES...localities in the vicinity of Cartersville, Bartow County, Ga., and at one place between 1\ and 3 miles southeast...district is in the southeastern half of. Bartow County, and the outcropping rocks are the older crystalline...dolomite belong in the middle or lower Cambrian, and it is probable that the lower portion of the Knox should... and also originally of the barite deposits. OCCURRENCE OF THE BARITE. The barite is so intimately associated |
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| Cucamonga Wilderness and Additions, San Bernardino County, California By NICHOLAS T. ZILKA and STEVEN W....Cucamonga Wilderness and additions, San Bernardino County, California, by Nicholas T. Zilka and Steven W...gneissoid granodiorite, the Cretaceous or older Pelona Schist, Cretaceous quartz diorite, and Cretaceous or early...early Tertiary andesitic dikes overlie the Pelona Schist along the Vincent thrust. All these rocks are intruded...Wilderness, and from small lead, zinc, silver, graphite, tungsten, and gem-stone deposits just outside |
 | | Report (volume) |
| .................................. Chrome mica schist of Shrewsbury....................................anticline.......................................... 70 Schist ridge west of Proctor and Fowler.................marble to schist.......................................... 80 Bedding and cleavage in schist............planes of bedding and of slip cleavage laden with graphite; B, hematitic dolomite from Swanton... t.......................... 12. Bedding and cleavage in schist on Dorset and Bear mountains.... 13. Thin section |
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| Kailroad about 24 miles northwest of Sulphurdale. Occurrence. The sulphur extends from the surface downward...sulphide (H2S) was strongly perceptible. The occurrence of large quantities of hydrogen sulphide suggests...CONCLUSION. The facts and inferences regarding the occurrence and origin of the Cove Creek sulphur deposits...1886. RICHARDSON, G. B. Native sulphur in El Paso County, Tex. In Bulletin No. 260, pp. 589-592. 1905. ROTHWELL...J. E. Alum deposit, near Silver Peak, Esmeralda County, Nev. In Bulletin No. 225, pp. 501-502. 1904. 490 |
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| .............................. Character and occurrence.................................. Metamorphism....................................... Worcester County, Mass....................................... Westboro................................. Character and occurrence. .^ ........................... Smithfield limestone............................................... Occurrence................................................part)............................ 39 Berkshire schist............................................... |
 | | Report (issue) |
| Four areas of peridotite near Murfreesboro, Pike County, Ark., were known at the time of the writer's visit...pp. 187-194. Fuller, J. T., Diamond mine in Pike County, Ark.: Eng. and Min. Jour., vol. 87, 1909, pp....C., and Brackett, E. N., The peridotite of Pike County, Ark.: Am. Jour. Sci., 3d ser. vol. 38, 1889, pp...about 2 miles northeast of the earlier-known occurrence and 3 miles from Murfreesboro. One of them, namely...miles to the north of these hills is an area of lower hills. Little Missouri River, flowing southward |
 | Kietäväinen, Riikka, Ahonen, Lasse, Niinikoski, Paula, Nykänen, Hannu, Kukkonen, Ilmo T. (2017) Abiotic and biotic controls on methane formation down to 2.5 km depth within the Precambrian Fennoscandian Shield. Geochimica et Cosmochimica Acta, 202. 124-145 doi:10.1016/j.gca.2016.12.020 | Journal (article/letter/editorial) |
| environments being the most favourable for methane occurrence. Rather than 48 a thermogenic relic, crustal...or their inorganic intermediates such as 50 graphite. Such crustal gases are characterized by the lack...Methane, ethane, hydrogen, carbon isotopes, calcite, graphite, Fennoscandian Shield, 62 Outokumpu, Pyhäsalmi...of carbon in the bedrock include 127 graphite-rich black schist. Serpentinites provide a potential source...ethane (C2H6), 138 propane (C3H8), DIC, calcite, graphite, molecular hydrogen (H2) and water, together with |
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| ............................... .... Ellsworth schist ........................................................................... 30 Mines of Hancock County.............................................. 30.......................... 42 Mines of Washington County............................................ 43...connection with this work the Milan mine, in Coos County, N. H., was visited. The deposit which is now successfully...BASTTN, EBSON S. A pyrrhotitic peridotite from Knox County, Me. a sulphide ore of igneous origin: Jour. Geology |
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| the origin of the golci, pyrite, copper, iron' graphite, and soapstone deposits found in the afea afe....,, Triassic sedimentarl' rocks............. Occurrence Descriptions lopography Structure 1E 18 19...19 19 19 19 po Cretaceous sedimentary rocks Occurrence Structure and description rocks...................... Zl Granites Locust Grove granite Occurrence .................... ........................Somerville granite .......................... 24 Occurrence Variations and structure 24 zq Tarr,i oF |
 | | Book |
| long (Marty, 2004 ). AFRICA widely in Litchfield County, where good crystals were taken from quartz veins...region (Brunet, I 977b ). NEW YORK Amity, Orange County. At many isolated collected sites between the towns...Litchfield County. Ilmenite masses and crystals from somewhere near Washington, Litchfield County, were described...ONTARIO Bentley Lake Road occurrence, Faraday Township, Hastings County. In fall 1994, Dan and Shelley...site which they called the Bentley Lake Road occurrence, south of Bancroft. Sharp, flattened rhombohedral |
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| quadrangles _______ Kigluaik group _________ _______ Lower formations___________ _ ___ Tigaraha schist_ __...Granite sills in the southward-dipping biotite schist of Thompson Creek____________________________ 24...stream during the preceding winter; B, Typical schist "monument"__________ _ ______________ 52 X. A,...mining advanced new information regarding the occurrence of the alluvial gold has become available, which...volume all the information at hand regarding the occurrence of the auriferous gravels. Much of this is now |
 | | Journal (volume) |
| Geology and Mineral Resources of Northeastern Madera County, California Geology and Mineral Deposits of Laurel...Laurel and Convict Basins, Southwestern Mono County, California OIL FIELD DEVELOPMENT OPERATIONS to ...classes: 1. Mines and mineral resources of a given County (describing kind, character, distribution and extent...former methods of conducting field work, including lower traveling-expense bills for the Bureau's engineers...northeastern Madera County and the other is by Evans B. Mayo on southwestern Mono County. Although the Division |
 | | Book (edition) |
| ANALYSIS . CHEMICAL PROPERTIES . FORMATION AND OCCURRENCE . QUALITATIVE BLowrirE . DeEscriIpTIVE . SULFIDE...the Lake Superior region to various points on the lower lakes and of transporting coal from these ports...is its external geometrical forms or outlines. occurrence in nature. A chemical substance, for example...hexoctahedral class. Their symmetry is, however, of a lower grade. This is not recognized on models. On crystals...orientation of etch figures will generally reveal the lower grade of symmetry. SS SO | eeseaacees “ KS 1 Figures |
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| 15 15 15 18 18 18 18 24 25 25 Oligoclase-mica schist f acies _-___-_.-_.____-.___ 25 Diaphthoritic...schists.-_---___-__________._-___ Albite-chlorite schist facies _--___._-________-___ Composition...-.-...-.-.-.-----..-...-........-.-.... Peters Creek schist._______________________________ Cardiff conglomerate...stratigraphy of Mine Ridge upland and vicinity._ Lower Cambrian rocks of the McCalls Ferry-Quarry ville...Continued. Paleozoic sedimentary rocks Continued. Lower Cambrian rocks of the McCalls Ferry-Quarryville |
 | | Book |
| is characterized by a different set of symmetry lower temperatures and pressures than does aragonite....magnesite, rutile, ilmenite, spinel, brucite, and graphite. these minerals. These particular deposits are...outside of which is the mantle, subdivided into lower and upper, and finally there is the crust. The ...rocks: igneous, metamorphic, and sedimentary. Lower mantle 5432°F (3000°C) Divergent convection currents...have pointed out, is also associated with the occurrence of certain minerals. There- fore some, like |
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| Schist............................................................................................................ Occurrence...conglomerate P h a se ...................... Occurrence..................................................................................... Chlorite Schist and P h y llite..................................found the Olenellus fauna characteristic of the Lower Cambrian horizon. About one mile north of Rutland...olf and Dr Foerste were fortunate enough to find Lower Cambrian fossils in a silicious limestone th at |
 | | Book |
| panning at various sites, and a promising gold occurrence was found on the banks of the Ivalojoki River...tremolite fels (skarn) and black, sulfide- and graphite-rich schist. Trüstedt returned to the Geological Office...hundreds-of-meters-wide mica-bearing quartzite schist that contained intercalations of talc and tremolite...the assumed contact between the mica schist and quartzite schist. In March 1909, the Senate of Finland...northern contact of the quartzite against the mica schist. Because of the thick overburden, he decided to |
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| graphs gems gemstone's physical chemistry, occurrence, properties, and market potential. And spectacular...MATERIALS 16 16 239 / 18 / 19 / Luminescence Occurrence / Stone Sizes 233 15 / Comments / Journals...molecules and accurate. random and occupy all At lower temperatures atoms THE NATURE OF GEMS fly about...inclusions, cavities, 2 flow, olivine at the lower part of lava flows or large intru- arrangement...mineralogi- are not abundant and are restricted in occurrence only to those localities where conditions were |
 | | Journal (article/letter/editorial) |
| renewed rifting. The nickel deposits reside in the lower metasedimentary part of the Ospwagan Group, in or...middle to upper amphibolite facies, locally to lower granulite facies. The gneiss is homogeneous or,...Ospwagan Group. It consists of two members. The lower member (M1) is dominated by gray, thinly layered...rhythmically layered biotite-muscovite quartzofeldspathic schist. It contains regularly spaced lens-shaped pegmatite...THOMPSON FORMATION Calcareous rocks MANASAN FORMATION Lower siliciclastic sedimentary rocks Unconformity ARCHEAN |
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| --_.____._____._--__---------------Black Canyon schist...-_.---__..--.-----.-.------------------Occurrence__-_...________________________________________ Biotite schist-..---.--. ____------__-_--_----__------------Quartz-muscovite..._______-___--______--_--___-___-__------_-_ Amphibole schist.-__--___._-_-__--___-----__------___-_-Ultrabasic...___-__--__--___ River Portal mica schist-__--__-____-__-_-____--__--_-.-__--___ Occurrence ______--_----_-_---_-...___ Mica schist._-___-__---__-__-___--_-_-__----_---_---_-__Quartzose phase of mica schist.____________________________ |
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| Quartz-biotite schist. ............................................. Hornblende schist. ...................................... Black pseudoporphyritic schist (kinzigite).......................... Dolomite...other horizons.................. Quartz-biotite schist. ................................................................................... Hornblende schist....................................................................... Origin of the hornblende schist. ............................... 65 65 65 65 66 |
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| ________ Greenstone-schist sequence...---_-_--__.-_-_-_-___-___--_-__ Occurrence and relations______...Greenstone_______l-_-______--__-_______-________.__-___-_ Occurrence and relations.______________________________...__-_____--_____------_-------_----__-._-_.-----Occurrence and relations.______________________________...correlation.__._-___.-._._____________.__.__.__ Schist.... __.__ 1 2 3 4 4 6 6 7 7 9 12 12 14 14 14 14....._._._.-__...__.-.-..._..--__...-._... 24 Occurrence and relations.____-__.__--_.-__._._.._---.__ |
 | | Report (chapter) |
| systematically localized close to a dolomite/black schist level in which a top-to-the-NNW d6collement-type...deposits, Prokin & Buslaev 1999). Moreover, every occurrence of stockwork or mineralized veins within the...stockwork cannot be systematically linked with the occurrence of feeder zones. A syntectonic stockwork formation...the High Seksaoua district (Fig. 1c). a lower calc-schist unit that is the lowest one observed in the...black schist systematically overlain by a grey dolomite layer 2 m thick; an upper calc-schist sequence |
 | | Book |
| . . . . . . . . . . . . . . . . . . Mode of Occurrence. . . . . . . . . . . . . . . . . . . . . . ....Sect. 11.3), molybdenite-2H (7 Sect. 5.3) and graphite-2H (7 Sect. 4.3). z Cubic Crystal System generally...van der Waals bonding is the sheet structure of graphite (. Fig. 4.11c), in which each C is covalently...perfect flaky cleavage and extremely low hardness of graphite. Van der Waals bonds play also an important role...minerals are orthorhombic and monoclinic sulfur, S, graphite and diamond, C, calcite and aragonite, CaCO3, |
