 | | Journal (article/letter/editorial) | | include phlogopite, magnetite, spinel, grossular, forsterite, monticellite, diopside, calcite, and wollastonite...Massachusetts. It is also known from the Bolton or Whitcomb quarry at Bolton, Worcester County, where it occurs in...at Canaan and Boardman’s Bridge (Advance Stone quarry), and with green spinel at Norfolk by Schairer...limestone” (marble) west of North River, Essex County; similar yellow grains at the Atlas limestone quarry and...is reported from Brierstown, Sparta (Limecrest quarry), and the mines of Franklin and Sterling Hill, |  | | Journal (article/letter/editorial) | | have formed part of an intrusive tongue in the marble, while the other reputed instances of 'inclusions'... Fig. 1 . - - G e o l o y i c a l mal~ o f the Marble Delta. Scale I 0 1 Sand~tour 2 Miles a.d ...in an account of the economic resources of the Marble Delta. 1 While the tract is one full of problems...During the course of the survey the main al~a of the marble was found to cover a tract ahnos~ 4 miles long...granite parted by layers of marble. There are also several strips of marble isolated in the gneiss arranged |  | | Book | | immensely popular handbook of minerals appeared in Germany I obtained a copy fo! my personal library and was...minerals, and occasionally of a few more. Limestone or marble are good examples illustrating the first case,...culture, derives its name from the saltmining district of Hallstatt in Upper Austria, where many prehistoric...of these fourfold axes in all. The considerably lower symmetry of a monoclinic crystal is shown in Fig...crystallographic symmetry of a body may often be lower than its apparent geometric symmetry. In a pyrite |  | | Book | | A CHANGING PLANET 11 Vanadinite, San Carlos district, Chihuahua, Mexico * 8 x 4 x 2 cm Mineral Species...change into larger crystals in the metamorphic rock marble. In metamorphosed sandstone, recrystallization...Dendritic manganese oxide on limestone, Solnhofen, Bavaria, Germany * 11.5 x 24 x 0.5 om MINERALS: PRODUCTS...such as Porcupine and Hemlo districts; Noranda district, Quebec. USA: Mother Lode belt and others in...Localities Canada: Cobalt mining district and Thunder Bay District, Ontario. USA: several localities |  | | Journal (article/letter/editorial) | | associationsthat are c o m m o n to unmetamorphosed and lower grade metamorphosed ores in Early Precambrian granite-greenstone...associated with and seem to flow and wrap around lower grade granite-greenstone cratons (Katz, 1986). The...and various crustal models suggest deep-seated, lower crustal origins or, in some cases, upper crustal...(Selebi-Pikwe) host rocks which are themselves lower members of an overlying supracrustal sequence. Both...developed S1 and L1 structures and this was followed by lower grade (M2-D2 and Mz-D3) events in the Early Proterozoic |  | | Book (edition) | | lepidolite (trilithionite-polylithionite), olivine (forsterite-fayalite), and wolframite (ferberitehiibnerite)...dept. (departement), dept. (departamento), dist. (district). Less common terms are not abbreviated, e.g....Scbwarzwald Mts., in the Sailauf quarry, Spessart Mts., Bavaria. both Germany, and from the Rabejac deposit... = = = = = Acanthite, x 16 mm, Freiberg, Germany, H Abernathyite, 12 mm, Ririera/, France, H Abhurite...the Himmelsftirst mine, Freiberg, both Saxony, Germany. In the subtropical areas acanthite may occur on |  | | Journal (article/letter/editorial) | | that the heavy graph ite from Kropfmuhl in Bavaria, Germany was derived from 13C-rich carbonate by the...metamorphism by a granite body in the north of this district. An absolute age determination with the K-Ar method...granite contact, and limestone and dolomite change to marble and other rocks to hornfels and/or crystalline...showing the distribution of a granite in trusive, marble and sample locality. Legend; 1: granite intrusive...between limestone marble and granite. Skarn minerals such as diopside, forsterite and garnet are found |  | | Journal (article/letter/editorial) | | in pyrite, graphite, or phlogopite, bounded by marble to the west and a granitic gneiss to the east,...The new locality for witherite is the lower level of a small quarry east of Gates Road and south of Seneca...of Jamesville near Syracuse, New Y o r k . The quarry exposes the Devonian Marcellus Shale, including...MINERALS MORPHOLOGY OF P Y R I T E CRYSTALS FROM DUFF QUARRY, HUNTSVILLE, LOGAN COUNTY, O H I O . R. Peter Richards...Remarkable pyrite crystals are found at the Duff quarry in vugs in the Silurian Tymochtee Limestone, along |  | | Journal (article/letter/editorial) | | octahedra to 1 cm occur in chloritic matrix at the Hamm quarry, Windham County, and fine crystals to 2.5 cm occur...octahedral crystals in chlorite schist at Prince’s quarry, Philadelphia County. Excellent specimens consisting...and octahedra to 1 cm across in marble in the Appomattox Lime quarry near Beckham, Appomattox County...occurred in talc at the Cherokee mine of the Ducktown district, Polk County, Tennessee. Sharply developed magnetite...Hill, and similar crystals are found in the Kimzey quarry or Calcite Hill locality (Smith 1996). Magnetite |  | | Catalog/List | | ALLEMONTITE An intergrowth of arsenic and antimony Germany Harz Mountains, Andreasberg Rich gray botryoidal...with minor . ARSENOPYRITE Iron sulfarsenide East Germany Saxony, Freiberg, Davidschacht Brilliant small...specimens from one of the few active mines in East Germany ..... . ..,-=e:.:x:.::i:.:c:.:o Zacatecas, Mina...oz. 0 0 I BORACITE Magnesium chloroborate Germany Thuringia, Bischofferode Transparent white ½"to...hydrated basic phosphate of ferrous and ferric iron Germany Giessen, Waldgirmes (; Radiating reddish-brown |  | | Journal (issue) | | Lieber Heidelberg, West Germany Olaf Medenbach Bochum-Querenburg, West Germany Eric Offermann Arlesheim...92700 Colombes, France T OCATION I # The mining district of Bou-Azzer is located approximately 30 km south...Morocco showing the location of the Bou-Azzer district and the map area at right. Figure 2. (right) A...is present in most of the veins in the BouAzzer district, although the best specimens supposedly come from...SECONDARY MINERALS The cobalt veins of the Bou-Azzer district contain a great variety of secondary minerals |  | | Book | | look for. Michael O’Donoghue Proustite (East Germany) 7 Rocks We can define a rock as a large mineral...metamorphosed sandstone and forms a hard rock. Marble forms from the metamorphosis of limestone and may...16 Phyllite Gneiss Homfels 17 Quartzite Marble Skam 18 Sedimentary Rocks Sandstone Travertine...the fixed index (the ordinary ray) at a higher or lower reading than the moveable (extraordinary) ray. Where...incident beam are retarded by passing through to the lower side of the film, rejoining the main beam either |  | | Journal (article/letter/editorial) | | from the continental deep drilling Project (KTB), Germany Received: 13 March 1995; Accepted: 29 August 1995...Tertiary Central European Volcanic Province. The lower metabasite sequence (3575-4000 m), with an intrusion...at the western margin of the Bohemian Massif, Germany. The purpose was to evaluate deep drilling procedures...the KTB is near the town of Windisch-Eschenbach, Bavaria, at the western margin of the Bohemian Massif (Fig...of the western rim of the Bohemian massif in NE Bavaria showing the vicinity of the KTB drilling site. |  | | Journal (issue) | | Lieber Heidelberg, W. Germany Olaf Medenbach Ruhr Universitat Bochum Bochum, W. Germany Eric Offermann Arlesheim...by L. A. D. Menezes and J. M. Martins The Jensen quarry, Riverside County, California ...................Windisch 30 Van Wouw Street Groenkloof, Pretoria West Germany Christian Weise Verlag Oberanger 6 D-8000 Munchen...Venanzo quarry, Terni, Umbria, Italy, and was later recognized from the Eifel district in Germany as well...localities all over the world— with special emphasis on Germany, Austria and Switzerland. Europe's Newest Mineral |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | Fritz: Bergakademie Freiberg, Freiberg, Saxony, Germany. Donald B. Hoover: U.S.G.S., Federal Center, Lakewood...Institut fur Mineralogie, Ruhr Universitat Bochum, Germany. Duane Mellor: Geology Library, Yale University...Berlin, Germany. Peter Susse: MINABS, Inst. of Mineralogy, Univ. of Gottingen, Gottingen, Germany. C. Sheldon...Pennsylvania. Hans J. Wilke: Eppertshausen/Hessen, Germany. Wendell E. Wilson: The Mineralogical Record, Tuscon...produced may result in observed optical character of lower symmetry than is expected for the crystal’s ideal |  | | Book | | chiastolite slate; Skiddaw Granite aureole, Lake District, England. c) Poikiloblastic staurolite porphyroblasts...in oblique section of tourmaline (main crystal, lower right). Also note the end-section of yellow-green...to determine whether a mineral is of higher or lower relief than its neighbour, or with respect to the...minerals with relief, and thus refractive indices, lower than the mounting medium are described as having...mounting medium (left and upper) and microcline (lower right quadrant). Notice how by slightly raising |  | | Journal (article/letter/editorial) | | Cleared Hill and are also fairly common in the Main Quarry on Por. 45/46/47. They are rather coarsegrained...state. TEXT-FIG. 1.—Dactylitic calcite-dolomite Marble. x 12. Myrmekite-like intergrowths of dolomite...dolomite. A calcite-dolomite marble is recorded from the Main Quarry. The grain-size is about 1 mm....have been collected from the Main Quarry and from the small quarry on Por 48. The rock is very compact...an assay of an admixture of dactylitic marble and brucite marble is given in the table on p. 394. (ii) |  | | Journal (article/letter/editorial) | | PORTSHEPSTONE. 507 21. DE~0I:OMITIZATION ~n the MARBLE Of PORT SItEPSTONE (~ATAL). By Dr. F. H. HATCa...The Dark-Mien-Olivine Zone. (c) Tim Light-Mica-Forsterite Zone. (d) The Ophiealeite Zone. (3) Other Inclusions...Felspar-Senpolite-Diopside Rock. (b) The Spinel-Forsterite Rock. V. Discussion o{' Results ............... 516 I. IXTRODUC~IO~. WHILE on a visit to the marble quarries of Port Shepstone, the attention of one...rings were found to consist of a portion of the marble, containing a number of interesting minerals in |  | | Journal (article/letter/editorial) | | with minor to accessory amounts of dolomite, forsterite, wollastonite, pargasitic amphibole, spinel,...water-rich fluids during retrogression. Marble The marble is white to light grey, massive, and composed...carbonates (>50 vol%), the marbles typically contain forsterite, diopside, phlogopite, scapolite, rare amphibole...titanite, quartz, and feldspars (Tables 1 and 2). The marble without dolomite also contains wollastonite. Texturally...minerals and Ti-magnetite. Xenoliths Xenoliths in the marble intrusions are typically cms to dms in size and |  | | Journal (article/letter/editorial) | | interaction between syenites and marbles at Stephen Cross Quarry, Quebec, Canada: petrological and stable isotope...dolomitic marbles and calc-silicates at Stephen Cross Quarry, Qu6bec, underwent contact metamorphism and metasomatism...infiltration produced exoskarns, calcite + periclase + forsterite + diopside + orthoclase assemblages in the marbles...equilibrium with the syenites (6180 =8.8-10.2%o). Marble 613C(Cc) values are -0.1 to -3.2%0; the lack of...s to 10 .2o m 2 for fluid flow lasting 0.1-1Ma. Marble 6180(Cc) values do not correlate well with distance |  | | Book | | petrology and his research interests centre on the lower palaeozoic rocks of Snowdonia, North Wales. Pat...You may just wish to visit a single outcrop or quarry and notice the relationships between certain rocks...samples in your field notebook. AT THE OUTCROP OR QUARRY The first thing to do when you arrive at a site...deep below the Earth’s surface, either within the lower part of the outermost zone of the Earth, the crust...may be observed today in areas such as the Peak District in Derbyshire, England. These surfaces may be |  | | Book | | one that will again defined as groups for the lower sec- 2< make a positive identffica- tion of the...characteristic—also weight of a specific mate- The lower section of the margin bar is rial compared with...crystals, and weathered surfaces can give a false lower hardness. Metal holders in which mineral chips...Tarnish, discolorations, and weathering tion at the lower edge of the crystal can be observed with the naked...carnallite, gypsum, halite, calcite. Found in: Lower Saxony/Germany; Czechoslovakia; Yugoslavia; Surrey/England; | | | Book | | specific gravity are again defined as groups for the lower section of the multicolored margin bar. As many...minerals as possible are included in each group. The lower section of the margin bar is fitted with a scale...crystals, and weathered surfaces can give a false lower hardness. After the test scratch, a po}Vder-like...zircon and sphene, where double refraction at the lower edge of the crystal can be observed with the naked...carnallite, gypsum, halite, calcite. Found in : Lower Saxony/Germany; Czechoslovakia; Yugoslavia; Surrey/England; |  | | Book | | from Sardinia, Italy Pages 118-119: Boracite from Germany Pages 124-125: Wulfenite crys¬ tals with mimetite...mineral can scratch the ones before it (those with lower numbers) and be scratched by those following it...involves pressure exerted by the upper layers on the lower, and an increase in temperature caused by the heat...orthoclase from Baveno. Bottom: view of active granite quarry near Baveno. Top: Panorama of iron mines near...they do not have a metallic appearance and have a lower density. Rare rhombohedral crystals of arsenic |  | | Journal (article/letter/editorial) | | (Lyadzhvardara and others), Ukraine (Delavetskii quarry in the Rakhov Massif, Carpathians), in Afghanistan...assemblages in handspecimens from the southern quarry [1] is as follows (Fig. 3): (I) leucocratic microcline–perthite...lazurite deposits in Russia occur in the Slyudyanka district, Irkutsk oblast, southwestern Baikal area, and...deposit is hosted in diopside skarns and spinel–forsterite calciphyres developing after dolomites in the...disseminated forsterite, spinel, and pyrite. The lazurite–forsterite vein located in the middle quarry of the |
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