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| Quartz-mica-garnet schist--_--___-_______ Amphibole schist_______________________ Mica and graphite schist-________________...Quartz-mica-feldspar schist______________ Quartz-mica schist-_____________________ Meta-iron-f ormation ____________________...quartz-mica schist._____________ Quartz-biotite-garnet schist-_________________ Mica schist.__________...________________ Photomicrograph of staurolite-andalusite schist-________-_---___-_______________-_-...Sketch of boudinage structure in lower amphibole schist unit, Vanderlehr Formation._____________________ |
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| center of the crystal. Kyanite Described Kyanite in schist, Roxbury, (Connecticut; specimen measures 9 x 9...other minerals as staurolite and garnet. The host rock is usually a biotite mica schist, although in some...kyanite is present in the schist mem ber of the Slasher's Ledge formation in outcrops on Steele Road from...Stedman Road to A t w o o d Swamp. Kyanite in schist with pink feldspar, Roxbury, Connecticut. Specimen...very common in mical slate, with staurotide (staurolite) and garnet. In Cornwall it is found in small |
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| ---~----~-------- --~-~~~~-~~---~~--~ ~~~~~~~---~~~-~-~~ Gneiss-schist-amphibolite unit Lower quartzite unit ~~~~~~~~...~~~~~~~~~~~~~~~~~----~-~---~-~ ~~~-~ Aluminous schist unit ~~~~~~~~~~~~~~~~~ Upper quartzite unit ~~~~-~-~~--~-...~~~~ ~ ~ ~ Gneiss-schist-amphibolite unit -~~ ~~~~--- ~~~ ~ Contact, Gneiss-schist-amphibolite unitLower...unitLower quartzite unit Aluminous schist unit -~~~~~-~~ ____ --~ ~---~----~~-~---~-~----~ Upper quartzite...Altered ultramatics ~- ~~-~ -~-~--~-~~~ ~ Graphite schist _ Possible Correlations The Brevard Zone -------~------ |
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| Sciences Universidad Complutense de Madrid Madrid, Spain José Tomás Oliveira LNEG Amadora, Portugal ISSN...recently published Geological Map of Portugal and Spain, 2015, scale 1:1,000,000. v vi Editors and Volume...Fernando Simancas teaches at the University of Granada (Spain). His main research interest is in the structural...Geociencias (UCM, CSIC), Universidad Complutense, Madrid, Spain C. Aguilar Centre for Lithospheric Research, Czech...Oviedo, Oviedo, Spain J. J. Álvaro Instituto de Geociencias IGEO (CSIC-UCM), Madrid, Spain Maider Armendáriz |
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| Tennessee Valley Authority noted extensive sillimanite schist occurrences in the vicinity of Valdese, Burke County...hair-like crystals, in schist or as coarse bundles of crystals (nodules) disseminated in schist. When heated above...sillimanite occurs in zones of muscovite-graphite schist which were probably highly aluminous, representing...kyanite produced by hydrothermal alteration of the schist was converted to sillamanite through the action..."Sillimanite has resulted from contact metamorphism of a schist by granite intrusions .... There is no evidence |
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| Mineral Equilibria in Interbedded Pelite and Calc-Schist Philippe Erdmer Department of Geological Sciences... Abstract. The interbedding of pelite and calc-schist in part of the contact aureole of a Devonian (biotite...e m o l i t e + K - f e l d s p a r in the calc-schist (combined with the andalusite-sillimanite equilibrium)...fine-grained graphitic pelite, quartzite, calc-schist and marble beds, commonly less than one metre thick...the calc-schist (Fig. 1). They are based on the first appearance of andalusite, staurolite and sillimanite |
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| schists, sillimanite-mica schists and gneisses, and staurolite-mica schists. Two varieties of granitic rocks...______________ _ 7 5 Staurolite crystal and folded mica in staurolite-m:ca schist ____ 10 6 Sillimanite...Sillimanite in a sillimanite-mica schist _------------------ ------------------------ 12 7 Sillimanite idioblast...sillimanite-mica schist ------------- 12 8 Cataclastic texture in 9 sillimanite~graphite schist ~~~~~~~~~~...~~~~~~~~~~,~~~~~~~~ 13 Muscovite schist --------------------------------------------- --------------------------- |
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| and Sill imani tc 54 K. The Garnets 57 L. Staurolite 60 M. Cordierite 62 N. Pegmatitic minerals...non-metallic minerals that can be seen and studied in outcrops, quarries or rock-dumps within the province. Although...Maps A to M (though not restricted to roadside outcrops) show some areas between the TransTrans Canada...41. Tremolite (Museum) 43 42. Anthophyllite schist from Batty Lake . . . . . . . . . . . . . . . ...from Chisel Lake 57 60. Well-formed garnets in schist from File Lake . . . . . . . . . . . . . . . . |
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| the structure and stratigraphy of each separate schist zone to be worked out. The bases of the beds were...enrichment of porphyroblasts within beds of mica schist. All these data are compiled on a special map at...the few true axial measurements and the fact that schist beds only a few hundred meters thick extend for...the structure and sequence of beds of separate schist zones proved successful and no contrary determinations...the investigation area is covered by the Himanka schist zone. Its NE border, which runs NW-SE, is situated |
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| melanosome minerals and leucosomes in Peña Negra, Spain, migmatites represents mineral-melt equilibrium...lines are isograds. Other abbreviations: St = staurolite, S = first sillimanite, SK = second sillimanite...sillimanite, K = kyanite. A tuffaceous shale unit (now schist) is highlighted to show the major fold structures...Black dots show locations of chemically analyzed schist samples. Migmatites occur above second sillimanite...Assemblages in the schists above the staurolite isograd include staurolite, garnet, biotite, muscovite, quartz |
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| areaAlmandite garnet; (g) harmony Church, area pegmatite outcropsBeryl; (h) Hickory Flat, 2 mi. NE on rd. to OrangeCorundum;...Fairview Church, on E side of Sharp Mt., areaStaurolite; NE 2½ mi.: (a) the Cochran Mica Mine (1 mi...4½ mi., on N side of Bluff Cr., along Rte. 1 Staurolite; SE 7 mi., on the Etowah R., at the Creighton-Franklin...Robertson farm; and on the James Spears farm (fee) Staurolite. CHEROKKE-PICKENS COUNTIES NELSON (Pickens Co...smoky). ATLANTA, Emory University, area pegmatite outcropsQuartz crystals (clear, BARNESVILLE, THOMASTON |
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| have been mapped as Hebron Formation and Scotland Schist. The Oakdale Formation is an unusually homogeneous...fault in southeastern Connecticut. The Scotland Schist, formerly mapped as the youngest formation, is...the northeast corner of the State. The Scotland Schist, considered the youngest formation according to...Paxton Quartz Schist (Emerson, 1917) in Massachusetts and Hebron Formation and Scotland Schist (Dixon and...previously mapped as Hebron Formation. The Scotland Schist, formerly mapped as a separate formation younger |
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| the Emily Gap Schist (Derriman, 1989; Stewart et al., 1984). The Emily Gap Schist outcrops east of Alice...Alice Springs and consists of biotite schist, muscovite schist, quartzite and quartzofeldspathic gneiss...The Teppa Hill Metamorphics overlie the Emily Gap Schist, and consist of fine grained quartz-rich metasedimentary...meta-arkose, biotite schist, muscovitebiotite schist, garnet-staurolite-andalusite schist and amphibolite...Gneiss is interpreted to intrude the Emily Gap Schist and the Teppa Hill Metamorphics (Stewart et al |
 | Thomas, Robert J., Macey, Paul H., Spencer, Christopher, Dhansay, Taufeeq, Diener, Johann F.A., Lambert, Christopher W., Frei, Dirk, Nguno, Anna (2016) The Sperrgebiet Domain, Aurus Mountains, SW Namibia: A ∼2020–850Ma window within the Pan-African Gariep Orogen. Precambrian Research, 286. 35-58 doi:10.1016/j.precamres.2016.09.023 | Journal (article/letter/editorial) |
| by a clastic metasedimentary sequence; the Aurus Schist. Detrital zircon geochronology indicates that these...ridges along with various isolated “satellite” outcrops culminates at 1084 m at Aurus peak. The main “spine”...strain-absent zones are relatively rare and most outcrops show a moderate foliation defined by the parallel...porphyritic Ramansdrif Granite. 4.3 Aurus Schist Belts and isolated outcrops of layered supracrustal schists and...and quartzites termed the Aurus Schist are found extensively in the central part of the Aurus Mountains |
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| semi-pelitic rocks, biotite scbists, kyanite-staurolite gneisses, homblende-biotite-garnet gneisses....colour, and stained with iron. Rib-like and flaggy outcrops are often found in these rocks though they are...south-west face of Kiu Kubwa. Parts of a muscovite-schist band ex:Rosed on the Nduluni ridge show signs of...south-western slope of Kenzi hill. Kyanite-staurolite Gnefsses.-Staurolite was seen in three specimens, in two...I 289 Per cent Per cent 45 45 20 20 17 Staurolite 3 25 35 Kyanite 2 10 Accessories 3 52/227 |
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| 23 Descriptions of rock outcrops.............................. 30 Outcrops of silicic igneous rocks.... . . . . . . . . . . . . . . . .... . . . 40 Outcrops of subsilicic igneous rocks. . . . . . . . . .... . . . . . . . . . . . . . . . . 52 Outcrops of slate, schist, and other metamorphic rocks. . . . 58...southern St. Louis counties. . . . . . . . 65 90 Outcrops of sandstone and other clastic rocks. . . . ....central Minnesota showing the location of rock outcrops ....................... .in pocket III. A. Granite |
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| complex. However, two exposures of garnet-kyanite schist located along the southern edge of the metamorphic...the difference in metamorphic grade between the schist and gneiss is due to an intervening thrust fault...exposures are predominately orthogneiss with minor outcrops of paragneiss, amphibolite, marble and quartzite...margins where there are large exposures of marble and schist with smaller exposures of quartzite and amphibolite...Ophiolite fragments Metasedimentary rocks (marble, schist, quartzite) Orthogneiss w/minor paragneiss, marble |
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| pegmatites cut the metasediments of the Bolton schist of pre-Mississippian(?) age and, in ascending order...Mississippian. The Bolton schist includes middle- to high-rank mica-quartz schist of various compositions...hornblende-bearing schist and gneiss. The mafic-.gneiss is predominantly hornblendic gneiss and schist with subordinate...subordinate mica schist and light-colored feldspathic gneiss. These metasediments are cut by the Glastonbury...dip westward, but in the southern part the Bolton schist is bowed up by the Monson gneiss into a dome. Between |
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| Murphrees Valley, as a narrow strip of scattered outcrops about 5 mi. long⎯Manganese minerals. CALHOUN...area⎯Barite. CHEROKEE COUNTY CENTRE, area Miocene outcrops⎯tektites (dark green and dark blue tektites have...the Louisville and Nashville RR), area pegmatite outcrops⎯Muscovite mica; d SE Region: (a) B.T. Childers... R. 13 E, on S bank of a creek in the Hillabee schist⎯Arsenic, Arsenopyrite, Chalcopyrite, Copper, Gold...worked for gold.); d as minerals in a graphitic schist⎯Kyanite, Mica and Vanadium. 2 A Location Guide |
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| Murphrees Valley, as a narrow strip of scattered outcrops about 5 mi. long⎯Manganese minerals. CALHOUN...area⎯Barite. CHEROKEE COUNTY CENTRE, area Miocene outcrops⎯tektites (dark green and dark blue tektites have...the Louisville and Nashville RR), area pegmatite outcrops⎯Muscovite mica; d SE Region: (a) B.T. Childers... R. 13 E, on S bank of a creek in the Hillabee schist⎯Arsenic, Arsenopyrite, Chalcopyrite, Copper, Gold...worked for gold.); d as minerals in a graphitic schist⎯Kyanite, Mica and Vanadium. 2 A Location Guide |
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| districts, to age: area, the scale considerable outcrops, especially in the inspection of our basins...groups to would be expected were the western outcrops extent, as same period with the eastern. of...Cretaceous, southern Law- divided, did the The outcrops also distinguished the and Cambrian of same...granite ridge of nearly 300 miles' length, Smaller outcrops exist along Dead mentioned above. north-easterly...ferruginous, is known New of East of the mica schist of Vermont, and the slate group, including the |
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| East Branch arkose______-___-_____----_ Solberg schist._________________________ General features.___________________...Precambrian rocks________________________ Chlorite schist and quartzite_________________ Granite gneiss....Age and correlation.-___________________ Solberg schist.______________________________ General character...nson group___________________--------_ Solberg schist and Skunk Creek member. __ Description of the Solberg...rite schist ______________ Quartzitic mica schist --------------Ferruginous quartz-mica schist and quartzite |
 | | Journal (article/letter/editorial) |
| . . . . STRATIGRAPHY . . . . . III. OUTCROPS IV. PITCH V. AND STRUCTURE O F FORMATIONS...flooded, and that these deposits interrupt the schist outcrops for about a mile across the general strike;...significant alterations in the tracing of the Ben Eagach Schist and Cam Mairg Quartzite. As far as the structure...Quartzite, and the outcrop of the Killiecrankie Schist was laid down somewhat on the lines later adopted...noted. The first is the separation of the Beoil Schist, and calls for no special treatment. The second |
| | Report (issue) |
| heaviest rains. mine. road or track I“. Rocl. outcrops ottterorw‘ are are numerous numerom in in the...kyanite-staturolite gneisses, gneisses. kyanite-staurolite hornblende-blotiic~gatnet gneisses. hornblendebiotitegamet...Machakos-Konzal tit the oeetirs by schist occurs lTlll.~'L‘C"\ll-‘.‘-L]13L:l'ii’. schist oi muscovite-quartz exposure...crumbly. The found often found are often outcrops areMaggy outcrops tind flaggy Kilt—like and iron. Rib-like...Kubwa. Ktihmt. of d PZH'I-l of a ti muscovite-schist [llUSCCViiC—sClTi‘Sl band imntl e expmeti on the |
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| constituents. Quartzite consists of quartz only, mica schist of quartz and mica, and eclogite of garnet and...7, 8, 21; interpenetrant twins, Figs. 16, 18; staurolite, Pl. 33). Depending on the number of individuals...gypsum apatite olivine, andalusite, kyanite, staurolite, garnets, epidote, zircon, tourmaline, cordierite...minerals and are named accordingly: garnet-mica-schist, feldspar augen gneiss, sillimanite or cordierite...hornblende peridotite augite olivine green glauconite schist ,hlorite seridte hornblende a little feldspar |
