 | | Journal (article/letter/editorial) | | wollastonite, 649; lithian tourmaline, 747 Newhurst quarry, Shepshed, Leicestershire, vesigni6ite, 533 Cornwall...* Confluence of Carneal Water and Clenoe Water Germany (Deutschland) Bramburg, G6ttingen, tacharanite...Breitenbrunn ( ~ Breitenhof), Saxony, helvine, 627 Schwarzenberg, Saxony, belvine, 627 ~gi~ (~l~jquO...glauconite, 753 SCOTLAND France Auchinstarry quarry, Kil~yth, Stirlingshire, julgoldite, 761 Blackcraig... 59 Portsoy, Banffshire, migmatites, 66r Ratho quarry, Edinburgh, julgoldite, 761 Champagnac, Cantal |  | | Book | | look for. Michael OâDonoghue 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 | | Binding: LĂŒderitz & Bauer, Berlin. Printed in Germany. Dedicated to my former teacher and friend Professor...Grigoriev (U.S.S.R) Prof. Dr. F.K. Drescher-Kaden (Germany) Mr. D. Minatidis (Canada) Dr. E. Mposkos (Athens)... Dr. Thesis, University of Frankfurt am Main, Germany. Fig. 551, by Wager and Deer from Theoretical Petrology...eclogites which consist mineralogically mainly of pyrope, phlogopite and pyroxenes (see chapter 13) eclogites...West Spain; pyrope in a quartzite in association with pegmatite from Evros, Greece and pyrope from an eclogite |  | | Journal (article/letter/editorial) | | Fen, magnesio-arfvcdsonite, 317. Hasvik, SOrOy, gabbro, 815. Sulitjehna, almandine, biotite, hornblende...Viisterbotten, montcbrasite, 414. Germany (Deutschland) Chursdorf, Penig, Saxony, amblygonite, 414. Drachenfels...Berkshire; Ha#on attd Shabbington Wood, Buckinghamshire; Lower Froyle, Selt)orne, and West Worldham, tlampshire;...Upnor, Kent. Cornwall Bosahan quarry, Falmoath, biotite, 21o. Dean quarry, Coverack, The Lizard, analcime... 153. Meidling im Tal, Lower Austria, omphacite, 6I. Mitterbachgraben, Lower Austria, omphacite, 6i. |  | | 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 |  | | Journal (article/letter/editorial) | | Ferruginous Hornfels from Riekensgliick, Harz Mountains, Germany K. A b r a h a m and W. Schreyer Institut ffir...ffir Mineralogie, Ruhr-Universit~t Bochum, Germany Received April 9, 1973 Abstract. T h e hornfels first...assemblage olivine-cordierite-spinel, and a subsequent, lower-temperature stage 2, in which the additional phases...Brocken massif in the Harz Mountains of Central Germany. The minerals formed in the hornielses under the...operation at the southern end of the town of Bad Harzburg. They represent a type of hornfels which according |  | | Journal (article/letter/editorial) | | authors are printed in SMALLCAPITALS,Subjects in lower-case roman, and Localities in italics. The minerals...i28. Amblygonite, France, Maine, New South Wales, Saxony, anal., cell-dimensions, distinction from montebrasite...albite, I56; - - , anal., d2o i, 489. Amoibite, Germany, anal., opt., X-ray, 26. Amos Stream, New Caledonia...Australia, alkali feldspar, anal., d2oi, 489. Bosahan quarry, Falmouth, Cornwall, biotite, 2IO. BOWDEN (P.)...Egypt, 394; New Zealand, 375. Chursdorf, Penig, Saxony, amblygonite, 414. Cinnabar, Yorkshire, xlii. CLARK |  | | 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 |  | | 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...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... Wire silver, Silver Islet Mine, Thunder Bay District, Ontario, Canada * 11.5 x 14x 11 om Silver has |  | | Journal (article/letter/editorial) | | 17 to 5877 ppm, primary C a - M g - F e garnet (pyrope up to 33 mol %), and the absence of primary plagioclase...granulite massif which carries numerous enclaves of pyrope peridotite. Euhedral equant zircon crystals up... Recent advances in the study of the Waldheim, Saxony, kornerupine rock (Schreyer et al. 1976; Grew 1986...information on petrology of perpotassic rocks under lower crust - upper mantle conditions. Geological setting...perpotassic granulite is exposed in the currently active quarry near Ple~ovice, 15 km SE of Cesk~ Bud~jovice, southern |  | | Book (edition) | | 134 143 THE TRACHYTE AND ANDESITE FAMILY THE GABBRO FAMILY . 152 156 170 . THE GREENSTONE FAMILY...The plutonic rocks-granite, syenite, diorite and gabbro - occur frequently in bosses . Laccolite.- A dome-shaped...many igneous areas (e.g. , in the English Lake District and in North Wales) . Dykes and Veins. - A dyke...sometimes form marked features in the scenery of a district ; for, being more capable of resisting the disintegrating...beautiful scenery of North Wales and of the Lake District owes its origin to the great development of volcanic |  | | Journal (article/letter/editorial) | | by concentrically zoned duniteâclinopyroxeniteâgabbro (âplatinumbearingâ) and ophiolitic massifs with...with intensely serpentinized rocks of the duniteâharzburg ite complex being the most widespread. Direct...[1, 3â5, 7â11, 14]. The wellknown Klyuchevskoi gabbroâultramafic massif is the most representative ophiolitic...top downward): duniteâwehrliteâ clinopyroxeniteâgabbro (layered part of the ophiolite section) and duniteâharzburgite...peridotites). The duniteâwehrliteâclinopyroxeniteâgabbro com plex constitutes several tectonic blocks in |  | | 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 | | 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...identification. Nobody should be discouraged by initial bad luck, it is sometimes difficult even for an expert |  | | Journal (article/letter/editorial) | | comparisons among the three eclogite types. The pyrope content of the garnets is distinctive for each...spectrographic analyses of pyrox2. Eclogite, Occidental quarry 490 3. Eclogite, Tiburon Peninsula 491 ene-bearing...consist of almandine-grossularitepyrope with the pyrope content ranging from 7 to 70 mol per cent; at the...15-CZ-59 oS*CRAMENTO 15-CZ-60 ^Occidental II3-RGC-58 Valley Ford 207-RGC-59 38° 164° 168° 22°S Figure...samples. Occidental 113-RGC-58 Tiburon 100-RGC-58 Valley Ford 207-RGC-59 Ward Creek 62-RGC-58 Junction |  | | Book | | Tubingen Germany and c. Schmitt-Riegraf Lecturer in Mineralogy University of Munster Germany Translated...Chapman & Hall GmbH, Pappelallee 3, 69469 Weinheim, Germany Chapman & Hall USA, 115 Fifth Avenue, New York...Verlag, P.O. Box 30 03 66, D-70443 Stuttgart, Germany Softcover reprint of the hardcover 2nd edition...Spinel group Pyrochlore and koppite Gamet group Pyrope Almandine Grossularite Melanite Leucite Sodalite...Schwabische Alb and in the Laacher volcanic areas of Germany. 2. We give emphasis to the common minerals. They |  | | Book | | names like granogabbro (granite-gabbro), monzogabbro (monzonite-gabbro), rhyodacite (rhyolite-dacite)...[Vulcan, Roman god of fire], plutonite (Pluto and the lower world), and Peleâs hair (Hawaiian fire goddess)...tribal peoples: bojite (Boii, Celtic tribe in Germany), gondite (Gonds, central India), onkilonite (Onkilones...sthene) are the essential constituents; differs from gabbro by the presence of the Definition proposed prthopyroxene...lUGS, plutonic rock satisfying the definition of gabbro, in which pl/(pl + px + ol) is 10-90 and the opx/(opx |  | | Book | | J. WYLLiE 135 Serpentinites of the Roxbury district, Vermont By RicHarp H. JAHNs III. A. Introduction...ultrabasic magmas may crystallize to spinel, or pyrope-rich garnet. Hornblendeperidotites vary in composition...listed in the in- wehrlite (olivine plus diallage), harzburg- yield mafic and ultramafic rocks, but it is...is a garnet-pyroxenite composed essentially of pyrope and omphacite. of Johannsen (1938) supplement...There is complete mineralogical gradation between gabbro, diabase, or teschenite, and peridotites containing |  | | Book | | negroâs head 95, 96 pyroaurite 51 pyrolusite 34 pyrope 76 pyrophyllite 102, 103 pyroxene group 96 pyrrhotite...found in igneous rocks rich in magnesium and gabbro granules and and poor in silica, such as peridotite...brownish black, at Freiberg and Andreasberg in Germany, and also in the United States (Arizona). Antimony...blue rock called kimberlite, which also contains pyrope covered with calcite. Casteltermini, Agrigento...found at Butte, Montana, and the Copper River district of Alaska. A much rarer mineral is covellite, |  | | | | pyroaurite 51 pyrolusite 34 pyromorphite 68, 68 pyrope 76 pyrophyllite 102, /03 pyroxene group 96 pyrrhotite...rocks rich in magnesium and poor in silica, such as gabbro and peridotite. It is normally found in granules...brownish black, at Freiberg and Andreasberg in Germany, and also in the United States (Arizona). Antimony...blue rock called kimberlite, which also contains pyrope and diopsids. Other famous mines are Dutoitspan...found at Butte, Montana, and the Copper River district of Alaska. A much rarer mineral is covellite, |  | | Catalog/List | | two sides of lx2 inch Boa Vista Pegmatite, Doce Valley Minas Gerais Brazil ÂŁ35 2. SCHOLZITE rich white...5 to !cm stilbite crystals. Vambor Ahmedhafar district, Maharashtra India 4x2.5 inch ÂŁ40 Also one smaller...this location closed many years ago. Boyleston quarry Barrhead Scotland ÂŁ6 54. ANALCIME good coverage...FREIBERGITE silvery mass about half inch Coeur d' Alene district Idaho USA ÂŁ3 1 0 7. MONTMORILLONITE rich creamy...covered all over but clearly visible, Union carbide Quarry, San Benito Co california ÂŁ5 11 2. TYROLITE blue-green | | | 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...identification. Nobody should be discouraged by initial bad luck, it is sometimes difficult even for an expert...should preferably be more detailed, e.g. walls of a quarry, or refuse heap specimen, so that one could find |  | | Book | | vaspian Sea, hina, ndia, etc. âornwall, farz Mts. Germany), âio Tinto Spain), Chile chalcopyrite (copper...fibrous, encrusting aggregates, radiating Javaria Germany), -rimea, 3olivia prismatic crystals (monoclinic)...staurolite, nglesey, ermatt switzerland), osta Valley taly), âalifornia, soda-rich hornblende Turquoise...irzgebirge, pyrargyrite Proustite slack Forest Germany), (dark red silver ore) (Light Red Silver Ore)...Blowpipe: fuses easily âornwall, tiesengebirge Saxony), Thuringia, smaltite (tin white cobalt), cobaltite | | | Book | | ~ornwall, )evon, ,hetland peat swan1ps), 3avaria Germany), . ..,nmea, 3olivia pyrrhotite, pyrites, often...soda-rich :e rmatt hornblende >Witzerland), ,osta Valley :taly), :alifornia, lew Caledonia Turquoise gen1stone...chalcedony; carbonates ~rzgebirge, Hack Forest Germany), )auphine France), J.S.A., :bile pyrargyrite...(dark red silver ore) :::ornwaU, Uesengebirge Saxony), f'huringia, :.rench \Jorocco smaltite (tin white...of all N.E. England, potassium Stassfurt salts (Germany), Alps, Texas Cornwall, Chessy (S. France), Spain |  | | Book | | minerals are the raw materials of the landscape. Every valley, hill and mountain peak is made entirely of rocks...just 20km/12 miles beneath Californiaâs Central Valley, it is substances like zinc and lead that join...so great that the iron simply cannot melt. The lower mantle is 6702,900km/420-1,800 miles down. Here...the underside of the crust, creating rocks like gabbro. Some oozes up into vertical cracks created by...drop away down these 'faults' to open up a rift valley, flanked by mountains formed from blocks that didn't |
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