 | | Journal (article/letter/editorial) | | Authors are printed in SMALLCAPITALS,Subjects in lower-case roman, and Localities in italics. T h e m i...Aerugite, synthesis, 72; Cornwall, anal., X-ray, 72; Saxony, anal., X-ray, 72. Aeschynite-priorite series,...kyanite after, Spain, xlix, West Pakistan, 669. Andradite, stannian, Czechoslovakia, anal., opt., cell-size...topotactic formation from y-CaSiOa, 347. Ankerite, Germany, topotactic decomposition of, 634. Anthoinite,...Arsenobismite, Brazil, 785. Artern, Sachseu-Anhalt, Germany, mellite, 542. ASWATHA~ARAYA~A(U.), Isotopic ages |  | | 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 (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 | | Binding: Lüderitz & 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...twinned are also present (Fig. 117). The garnet (andradite-grossular) forms idioblasts or xenomorphic blastogenic...material comes in contact with marble, epidote-andradite-grossular-magnetite skarn* may develop within |  | | 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 | | 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 (issue) | | Museum Toronto, Ontario Steven R. Morehead Green Valley, AZ Donald R. Peacor University of Michigan Ann...Behnke Northbrook, IL Werner Lieber Heidelberg, W. Germany Eric Offermann Arlesheim, Switzerland Jeffrey A...FLUORITE on muscovite, 14 cm, from Nagar, Hunza Valley, Northern Areas, Pakistan. Wally Mann collection;...minerals came during a chance visit to the Lower New Street quarry immediately following a blast; prehnite-filled...v.8/#6 California Issue Paterson (NJ), Brumado district Benitoite, Gold L.A. County $12 Museum, Himalaya |  | | Journal (article/letter/editorial) | | +6.4 to +6.8 ‰. These values indicate that the lower-temperature (250– 330 °C) quartz was deposited from...overlap, the δ18O values of the fluids are generally lower than those observed in the massive and disseminated...Keywords Iron oxide–apatite deposit . Porphyritic gabbro– diorite . Alteration zoning . Hydrothermal origin...(Nanjing–Wuhu) volcanic basin of the Middle and Lower Yangtze River Valley (MLYRV) metallogenic belt. This belt...belt is an important Cu–Fe– Au–S mining district in China that includes more than 200 ore deposits associated |  | | Catalog/List | | from I-t - 2" in length. f.1.25 each. . 4. ANDRADITE variety of GARNET. S"anley autte, Utah, U.S.A... A~GLESITE. 8. ATACAMITE. Copiapo, Atacama District, Chile. Rich, very dark, blackish green, bladed...If.xlt". f.l. 50. 9. AZURITE. Moldawa, Banat District, Hungary. Small, bright, blue sharp sparkling...}~-x2ixli". £l6.5o. NATIVE B~5MUTH. Schneeberg, Saxony, Germany. Very rich vein section consisting of feathery...£13.00. 15. BROCHANTITE. Mammoth Mine, Tintic District, Utah, U.S.A. Bright, deep green, small sharp |  | | 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 |  | | Journal (article/letter/editorial) | | Georg-August Universit~it, G6ttingen, Federal Republic of Germany With 4 Figures Received December 14, •990; accepted...antiform. The axial region of the fold now forms a valley exposing the main body of pegmatite and aplite...hedenbergite-diopside clinopyroxene (20-40 vol%). Andradite garnet (often greater than 5 vol%) occurs as a...probably to ionic transfers across the boundaries. Andradite occurs essentially at the contact of clinopyroxene...= black, bytownite = by, clinopyroxene = cp, andradite = ad, titanite = t, apatite = a, quartz = q and | | | 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 |  | | Journal (article/letter/editorial) | | authors are printed in SMALL CAPITALS,subjects in lower-case roman, and localities in italics" book reviews...topotactic transformation to mullite and silica, 195 Andradite, New Zealand, anal., M 14; stannian, from a tin...of primary Cu-S mineralization in the Freetown gabbro, Sierra Leone, IiI Brattfors mine, Nordmarks Odalfalt...geochemistry of loveringite, 187 Cannington Park quarry, Somerset, djurleite, 172; durangite, 172; milarite...Carrollite, W. Australia, anal., opt., 93; Congo and Germany, anal., 93 Cassiterite, twinning, post-growth readjustment |  | | Book | | called pegmatitic segregations and can occur in gabbro, As well-shaped crystals. This is because they...Granite and syenite are light in colour, diorite and gabbro dark, and peridotite black or dark green. In some...phenocrysts extrusive rocks. Granite, syenite, diorite, gabbro, which the minerals form much they size; coarse-grained...intrusions and medium- to finegrained Hornblende gabbro other larger crystals, are the same as those...natrolite, analcime, chabazite and the black form of andradite. Hydrothermal Deposits When the magmatic solution |  | | 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...453. Andamooka, South Australia, opal, 357. Andradite, chromian hydro-, Tasmania, anal., opt., cell-size...Australia, alkali feldspar, anal., d2oi, 489. Bosahan quarry, Falmouth, Cornwall, biotite, 2IO. BOWDEN (P.) |  | | 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...Schwabische Alb and in the Laacher volcanic areas of Germany. 2. We give emphasis to the common minerals. They...opposite is the case if the investigated mineral has a lower refractive index than the material it is surrounded |  | | Journal (article/letter/editorial) | | with those of gabbro. In contact zones with marble, ferrosalite and grossularite-andradite skarn is developed...facies on the anorthositic side. One sheet of salite gabbro is interpreted as the product of assimilation of...and 0.6 to 1.5 per cent ferric iron) in normal gabbro, norite and diabase sheets. The anorthositic pyroxenes...in general slightly higher in lime and markedly lower in magnesia. The implications would seem to be that...opp. p. 24. (2) Augite from anorthositic gabbro, Keene valley road, 1 mile WNW of intersection with main |  | Yu, Jin‐Jie, Chen, Bao‐Yun, Che, Lin‐Rui, Wang, Tie‐Zhu, Liu, Shuai‐Jie (2020) Genesis of the
Meishan
iron oxide–apatite deposit in the
Ningwu
Basin, eastern
China
: Constraints from apatite chemistry. Geological Journal, 55 (2) 1450-1467 doi:10.1002/gj.3495 | Journal (article/letter/editorial) | | 4 Wanping regional Office of Beijing Fengtai District People's government, Beijing, China 5 Department...main orebody, located at the contact between a gabbro–diorite porphyry and biotite– pyroxene andesites...mineralization, apatite coexists with magnetite, andradite, and quartz in massive magnetite ore and occurs...mineralization. Apatite is also present in the altered gabbro–diorite porphyry. The apatites from the massive...fluor‐ and hydroxyl‐ variety. Those from the altered gabbro–diorite porphyry show extensive solid solution |  | Koritnig, S., Rösch, H., Schneider, A., Seifert, F. (1978) Der Titan-Zirkon-Granat aus den Kalksilikatfels-Einschlüssen des Gabbro im Radautal, Harz, Bundesrepublik Deutschland. Mineralogy and Petrology, 25 (4) 305-313 doi:10.1007/bf01180234 | Journal (article/letter/editorial) | | Titan-Zirkon-Granat aus den Kalksilikatfels-Einschliissen des Gabbro im Radautal, Harz, Bundesrepublik Deutschland I...Granat stammt aus KalksilikatfelsEinschltissen im Gabbro des Radautals, Harz. Summary The Titanium-Zirconium...Garnet o f Calc-silicate Rock Inclusions o f the Gabbro o f Radautal, Harz Mountains, F. R. G. The chemical...occurs in calc-silicate rock inclusions of the gabbro of Radautal, Harz Mountains, F. R. G. V o n d...Kalksilikateinschliissen im Gabbro des Biirenstein-Steinbruchs im Radau tal Analyse SiO2 TiO2 ZrO2 A1203 |  | | Journal (article/letter/editorial) | | nephrites. Europe Swiss Alps French Alps East Germany West Germany Poland Finland Asia America California Wyoming...deposits are concentrated mainly in the Swiss Alps, Germany, Silesia and northern Italy. The Swiss Alps. Two...of Salux, at the contact between saussuritized gabbro and serpentinites; it is partly schistose and...contact between greenstone (prasinites) formed from gabbro, and chloritized and carlDonatized serpentinites...of this deposit are not those of nephrite. East Germany (Thuringia). According to Rimann (1938, 1939), |  | | 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 |  | | Catalog/List | | CAVENSITE ON STILBITE (4cm x 4cm x 3cm) IPagoli Quarry, Poona, India A large group of cavensite crystals...very nchly covering a feldspar matrix £40 36 ANDRADITE GARNET (8cm x 4cm x 4cm) N'Chnanning Mint, South...South Africa Blood red crystals of andradite garnet to 3mm covering a garnet matrix forming an undulating...£25 40 SAMPLEITE (2cm x 1cm x 1cm) Laks Boga Quarry, Victoria. Australia Bright electric blue crystalline...£12 41 ULR1CHITE (2cm x 2cm x 1cm) Laks Boga Quarry, Victoria, Australia A very nice pretty micro of |  | | Book (volume) | | octahedra (M-octahedra) by additional D-octahedra with lower-force characteristics (D ¼ Fe, Mg, Mn or Zn) in...points in Fig. 1.8 is due mainly to the presence of lower-force-strength cations (Ca and Na) in the D site...(Specord 75 IR or Specord M80, Carl Zeiss, Jena, Germany), Perkin Elmer 1600 Series FT IR spectrometer or...FT IR spectrometer (Bruker Optics, Ettlingen, Germany). IR spectrum of a pure KBr disc was subtracted...MgB6O7(OH)6·2H2O Locality: Chelkar salt dome, Aksai Valley, Aktobe region, Kazakhstan (type locality). Description: |  | | Journal (article/letter/editorial) | | Schneebergite and nickelschneebergite from Schneeberg, Saxony, Germany: the first Bi-bearing members of the tsumcorite...Metamict aeschynite-(Y) from the Evje-Iveland district (Norway): heat-induced recrystallization and dehydrogenation...mantle component in the origins of the Hercynian gabbro-granite series of the “Serie dei Laghi” (Southern...Pb6Sb6S14(S3), a new mineral from the Ceragiola marble quarry..................................................chemical insight into sector zoning of a titanian andradite (’melanite’) crystal. ....................... |  | | 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 California’s 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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Gabbro Quarry, Radau valley, Bad Harzburg, Goslar District, Lower Saxony, Germany