 | | Book | | results in a pseudo-symmetry, i.e. crystals of lower symmetry are twinned in such a way that they form...between that of the sample and that of the next lower grade. In this case we consider the hardness to...Different scratch hardness on kyanite 20 somewhere lower grade adding a half-grade to it. Although the determination...fibrous and porous aggregates often seem to have a lower hardness because of the blank spaces between individual...and sour. Other minerals, such as sulphur, arsenopyrite, and fluorite can be identified by the characteristic |  | | Journal (article/letter/editorial) | | chalcopyrite, pyrite, pyrrhotite,sphalerite,galena,arsenopyrite,bornire, and chalcocite. Many lessersulphidessuchas...; Ely, Nev.; Mount Magnitaya,Russia;the Duluth gabbro,and singlespecimensfrom manydistricts. MAGNETITE... pyrite, chalcopyrite,pyrrhotite,sphalerite,arsenopyrite,galena, bornire,chalcocite, pentlandire, cubanire...Ak-tyus, Russia (xoo) .................. Alamo District, Lower California ,.• • ,.• 0 x x x x x x x........ x x x x x Several x Altenberg, Saxony, Germany (58) ....... Alexo Mine, Ont. (97) ....... |  | | Book (edition) | | 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...at the Himmelsftirst mine, Freiberg, both Saxony, Germany. In the subtropical areas acanthite may occur...byssolite. Mono- coast of North America: Kobuk River Valley, Alaska, clinic, C2/m, a,b,c = 9.89, 18.20, 5.31 |  | | Book | | look for. Michael O’Donoghue Proustite (East Germany) 7 Rocks We can define a rock as a large mineral...Darker and even poorer in silica than diorite is gabbro, containing a calcium-rich plagioclase and pyroxene...Granite Nepheline syenite Syenite Dio rite Gabbro Peridotite 13 Dunite Serpentinite Rhyolite...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 |  | | Book (volume) | | 20 Segregations of Titaniferous Magnetite in Gabbro The Taberg near Jonkoping (6) The Titaniferous...Syenites. .... 4. Segregations of Titanic Iron Ore in Gabbro Rocks The Titanic Iron Ore Deposits of Ekersundsoggendal...Deposits of Nickel and Copper Ores in Connection with Gabbro Rocks or Diabases and their Metamorphic Derivatives...Schluckenau, in Northeastern Bohemia, and at Sohland, in Saxony (e) Arsenious Nickel Ores in the Serpentine of...Deposits of North America Marc[uette Iron Ore District in the State of Michigan 7. African Iron Ore Deposits |  | | Book | | and Technology Brennhausgasse 14 09596 Freiberg Germany Library of Congress Cataloging-in-Publication...for Geosciences and Natural Resources Hannover, Germany Preface The extraordinary growth of the computer................ 62 3 .2.8.1 Letneye, Dombarovsk District ....................................................... 62 3.2.8.2 Komsomolskoye, Mednogorsk District ...................................... 64 3.2.8.................... 65 3.2.8.6 Bakr-Tau, Baimak District, Bashkirian Republic ....................... 66 | | | Book | | results in a pseudo-symmetry, i.e. crystals of lower symmetry are twinned jn such a way that they form...that of the next lower grade. In this case we consider the hardness to be of the lower grade adding a half-grade...fibrous and porous aggregates often seem to have a lower hardness because of the blank spaces between individual... and sour. Other minerals, such as sulphur, arsenopyrite, and fluorite can be identified by the characteristic...identification. Nobody should be discouraged by initial bad luck, it is sometimes difficult even for an expert |  | | Journal (article/letter/editorial) | | hydrobasaluminite, basaluminite, 931 Merebead quarry, Somerset, mendipite, chloroxiphite, 9o i St. Austell...Scar Crag, Lake District, arsenopyrite, alloclase, glaucodot, cobaltian arsenopyrite, eobaltite, skutterudite...rocks, 919 Le Pulec, Jersey, pyrite, marcasite, arsenopyrite, sphalerite, ferroan dolomite, galena, chalcopyrite...intergrown with clausthalite and wittichenite, 13I Germany (Deutschland) Clara mine, Black Forest, cuprotungstite...jadeite, phengite, pumpellyite, and lawsonite in gabbro, 979 Termignon, Haut Savoie, blueschist-facies |  | | Catalog/List | | ALLEMONTITE An intergrowth of arsenic and antimony Germany Harz Mountains, Andreasberg Rich gray botryoidal...marble ..... . Connecticut Canaan, New England Lime quarry Silky white xl prisms in dolomitic marble .......material ........... Arizona Cochise Co. , Swisshelm district Rich brown to gray massive, some with minor cerussite...aluminum silicate Calilornia Placer County, Grass Valley Hornblende Norite Broad white crystal sections...chloro-phosphate :\'ew Hampshire Grafton Center, Ruggles quarry Olive green masses in pegmatite ....... Fl. APOPHYLLITE |  | | Book (volume) | | ' This Kupferschiefer is cases. lean in this district, carrying only 1.4% of copper, and no silver,...fissures known as 'rucken' in the Mansfeld copper district also contain occasional nickelite, together with...examples of this type is the cobalt district of Schneeberg, in Saxony, a mountainous region 1,300 to 1...present. Besides quartz-cobalt veins the Schneeberg district contains quite a 3 variety of vein types, which...Schneeberg, cally important deposits of the entire district. the veins are so crowded together in an area |  | | | | aetna (page 54). Diamond-shaped, striated one of arsenopyrite on rounded, grey galena and surrounded ce ne...pyrrhotite, pentlandite, stibnite, cobaltite, arsenopyrite, molybdenite, galena are included here. Oxides:...(black), p. 74 pyrite (pale brass yellow), p. 46 arsenopyrite (silver-grey), p. 54 cobaltite (silver-grey)...rhyolite (p. 256) Medium diorite (p. 250) Dark gabbro (p. 252) andesite (p. 260) basalt (p. 262) obsidian... In the southern prairies and the St. Lawrence valley, this fragile layer of sediments produced fertile |  | | Book | | Council Glossary of the minerals of the Lake District and adjoining areas B. Young NEWCASTLE UPON...booksellers A Glossary of the Minerals of the Lake District and Adjoining Areas B. Young Introduction The...covered by this glossary includes the central Lake District , the adjoining west Cumbrian coal and iron ore...Ennerdale, Shap and Skiddaw form part. Sediments of Lower Carboniferous age, locally with some contemporaneous...wide area on the Wand N flanks of the Lake District. These Lower Palaeozoic rocks are succeeded unconformably |  | | Book | | A CHANGING PLANET 11 Vanadinite, San Carlos district, Chihuahua, Mexico * 8 x 4 x 2 cm Mineral Species...manganese oxide on limestone, Solnhofen, Bavaria, Germany * 11.5 x 24 x 0.5 om MINERALS: PRODUCTS OF A...hydrothermal quartz veins associated with pyrite, arsenopyrite and other sulfide minerals, and in placers resulting...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 | | | Book | | results in a pseudo-symmetry, i.e. crystals of lower symmetry are twinned in such a way that they form...this case we consider the hardness to be of the lower grade adding a half-grade to it. Although the determination...fibrous and porous aggregates often seem to have a lower hardness because of the blank spaces between individual... and sour. Other minerals, such as sulphur, arsenopyrite, and fluorite can be identified by the characteristic...identification. Nobody should be discouraged by initial bad luck, it is sometimes difficult even for an expert |  | | Book (edition) | | scale to soapstone at the other. There is a still lower limit in liquids and gases; but of the hardness...the planes of the trisoctahedron in Fig. 21. The lower one of the three on the upper front solid angle...by a constant ratio, and the expression for the lower right one of the six planes will be 3c f & la. By...planes will remain essentially the same. In Fig. 10, bad the plane lettered | been made the plane 1, then...being here directly over those suppressed in the lower pyramid. APATITE. If the student will shade over |  | | Book | | immensely popular handbook of minerals appeared in Germany I obtained a copy fo! my personal library and was...culture, derives its name from the saltmining district of Hallstatt in Upper Austria, where many prehistoric...minerals are concerned. Opal is still thought to bring bad luck, and similar stories are told about certain...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 |  | | Catalog/List | | size intergrown in parallel growth on massive arsenopyrite. 3x2~x1t", £13.00 . 5. Hingston Down Mine:...CABRERITE (Magnesian Annabergite). Laurium, Attica district, Greece. Light green small sharp crystals lining...2x1tx1", £3.7Sp. 14. CALCITE. St. Andreasberg, Harz, Germany. Specimen A: Select translucent to transparent... A large geode-like cavity in calcite/ altered gabbro matrix lined with transparent creamy coloured well...~-x2t", £6. SOp 16. CARPHOLITE. Wippra, Harz, Germany. Rich golden coloured radiated crystalline masses |  | | Book | | understanding and enthusiastic publisher I have ever bad the pleasure of working with. I know that be joins...Meldonaplitequarry,nrOkehampton, Devon ~.~eldon ap::'te quarry,nrOkehamp:on. 0: ,0,1: roci...Bergemann in 1858 from Johanngcorgenstadt, Saxony, Germany, and named by G. J. Adams in 1869. They were...work (as chief collaborator on Kingsbury's Lake District "discoveries") is most affected by the problem...Cumbria (Ixer & Stanley 1987); a glossary of Lake District minerals (Young 1987a), which referenced many |  | | Catalog/List | | two earlier catalogues, but now offered at even lower prices. Additionally, I have included some specimens...golden-yellow nodule, A/20. ANALCIME. Enderby Quarry. Leicestershire. This specimen is more interesting...2.5x2x1.25", £4.00 1. ANALCIME/NATROLITE. Dean Quarry, St. Keverne, Lizard, Cornwall. Pearly white to...to about 0.75" in size developed on surface of Gabbro matrix plus, minor crystalline Natrolite and Calcite...75x1", £7.50. 2. ANALCIME/NATROLITE/CALCITE. Dean Quarry, St Keverne, Lizard, Cornwall. Pearly white, large |  | | Catalog/List | | plastic box. Friedrichsegen Mine, bad Ems , Lahn .Rhineland-Palatinate Germany £18 7 SULPHUR small crystals...crystals in Basalt 5x6 cm Limberg No 1 quarry, Kaisersthul, Germany £4 11 LAVOISIERITE rich brown fibrous...good long wave orange fluorescence 3.5x3cm Koksha valley Badakhshan Afghanistan £35 22 CANCRINITE yellowish...HARMOTOME, clear micro crystals on 1x2 cm Dolyhir Quarry, Old Radnor Powys £5 54 HEMIMORPHITE good covering...and piemontite matrix. 2x3cm Praboma Mine, Aosta Valley, North Italy £20 B) smaller piece £10 71 BRUCITE |  | | Book | | pytThotite, pentlandite, stibnite, cobaltite, arsenopyrite, molybdenite, galena are included here. Oxides:...(black), p. 74 pyrite(pale brass yellow), p. 46 arsenopyrite (silver-grey), p. 54 Grey galena (silver grey...Medium diorite (p. 250) andesite (p. 260} Dark gabbro (p. 252) basalt (p. 262) obsidian (p. 266) Sedimentary... In the southern prairies and the St. Lawrence valley, this fragile layer of sedin1ents ,,,. produced...McIntyre Mine, Timmins, Tisdale Tp., Cochrane District, Ontario. Width of specimen: 10 cm Pyrite (fool's |  | | Book | | specific gravity are again defined as groups for the lower section of the multicolored margin bar. As man y...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 powder-like...zircon and sphene, where double refraction at the lower edge of the crystal can be observed with the naked... 3◄ 4 ◄ 5 ◄ Sassolite boric acid G) Death Valley, California/ USA B(OHb Streak white. Mohs' hardness |  | | Report (issue) | | 113 113 113 114 115 PAGE Germany (The Federal Republic and Eastern Germany) Greece • • • • • • • • •...world's supply of cobalt came from Scandinavia, Saxony and Hungary. In 1959, output from the Commonwealth...France, with smaller quantities imported by Federal Germany, New Zealand, Italy, Sweden, Australia, Argentina...deposits and is an important mineral of the Cobalt district, Ontario; it also 9ccurs in Quebec, Morocco, Mexico...Canadian and Moroccan deposits and has been noted in Germany and elsewhere in Europe. Oxidised Cobalt Minerals |  | | Journal (article/letter/editorial) | | Ladysmith (Rosemeyer 1999, the Vulcan Materials quarry in Racine (Scovil 1994), the pegmatites of Florence...marcasite. A major mining district, the Upper Mississippi Valley zinc-lead district, was in these rocks in...and copper minerals were found. Mining in this district ceased in the late 1970s. A branch of the Middle...may have omitted. Adams County Hamilton Mound. A quarry is located in the NE 1/4 sec. 36 T*20N*R.6E.: potassium...converted to a hornfels at the contact with the Mellen gabbro complex: apatite, fayalite, ferroaugite, grunen'te |  | | Catalog/List | | £2.16. 6. ARGENTITE. Comstock Lode, Paradise Valley, Nevada, U.S.A. A very rich sectile metallic grey...veins tuff with sil~ery gre Y s~~rp crystals of Arsenopyrite in l assoclatlon. 3x2~x12' £6.48. 16. CASSITERITE...Psilomelane. Itxltxl". £5.40. 22. CHABAZITE. Dean Quarry, St. Keverne, Lizard, Cornwall. Unusual hollow...crystals of CHAB.ZITE with minor Stilbite, encrusting Gabbro matrix. Specimen A associated \'iith botryoidal...2txl·~xl". £2.16, 28. COBALTITE. Schneeberg, Saxony, Germany. Sharp, SLIvery grey, cubic crystals to 5 mm |
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