 | | Journal (issue) | | They collected at many locations in the Willamette Valley, central and eastern Oregon, southern Washington...a member of the Sacramento Mineral Society, the Valley Rock Rustlers, and the ElDorado County Gem and...locations as San Benito County, Death Valley, and Crestmore Quarry. While living in Sacramento, he exhibited...and for fayalite in the article on Henderson's Quarry, New Zealand (VoL VII, #7, page 21) lt is curious...constituent of a body of rock (peridotite, olivine gabbro), but more commonly is as small inclusions (phenocrysts) |  | | Book | | liebigite 53 liroconite 74 lithiophilite 65 ludwigite 5/, 53 magnesite 38, 38 magnetite 23, 24 malachite...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...found at Butte, Montana, and the Copper River district of Alaska. A much rarer mineral is covellite,...Switzerland. Good crystals I occur at Freiberg in Saxony, Cavnic in Romania, Schwaz in the Tyrol (Austria) |  | | | | opal 32 leucite 76, 109, 111 lithiophilite 65 ludwigite 5/7, 53 magnesite 38, 38 magnetite 23, 24 malachite...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...found at Butte, Montana, and the Copper River district of Alaska. A much rarer mineral is covellite,...found in crystals if occur at Freiberg in Saxony, Cavnic in Romania, Schwaz in the Tyrol (Austria) |  | | Journal (article/letter/editorial) | | 20, 2006 Abstract—Orthorhombic magnesium–iron ludwigite–vonsenite forms a continuous isomorphic series... INTRODUCTION Magnesium–iron borates of the ludwigite series, vonsenite and hulsite–paigeite, are the...spectrum of intrusions: from leucocratic granites to gabbro, including adamellites and other alkaline rocks...significant concentrations in the form of moderately Fe ludwigite were found in the suanite ores of Nhina. The widest...vesuvianite, and garnets. The compositions of ludwigite–vonsenite series are correlated with coexisting |  | | 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 | | linarite 59, 60 liroconite 74 lithiophilite 65 ludwigite 51, 53 magnesite 38, 38 magnetite 23, 24 malachite...brownish black, at Freiberg and Andreasberg in Germany, and also in the United States (Arizona). Antimony...found at Butte, Montana, and the Copper Rjver district of Alaska. A much rarer mineral is covellite,...Switzerland. Good crystals ll occur at Freiberg in Saxony, Cavnic in Romania, Schwaz in the Tyrol (Austria)...with a metallic lustre, mainly at SiegerJand in Germany and in Bohemia (Czechoslovakia). It is found at |  | | Journal (article/letter/editorial) | | approach the composition of granodiorite, syenite, and gabbro) into skarnified marbles. The degree of magma overheating...rocks of the pluton vary in composition from older gabbro (43 wt % SiO2) to younger leucocratic granites...the metasomatic aureole exposed in the Crestmore quarry (modified after [4]). (1) Carbonate rocks (dolomite...diorite and even pyroxene–plagioclase quartzfree gabbro, which were formed via the magmatic replacement...quar ries) and leucocratic pegmatites (Jensen quarry) was not associated with the contamination of these |  | | Journal (article/letter/editorial) | | Received March 26, 2018 Abstract—In the taxitic gabbro-dolerites of the upper contact zone of the Norilsk-1...Mg2B2O5, warwickite (Mg,Ti,Fe,Cr,Al)2O(BO3), ludwigite (Mg)2Fe3+O2(BO3), and azoproite (Mg,Fe2+)2(Fe3+...olivine in the recrystallization zones of taxitic gabbro-dolerites. This indicates that they formed at the...by the Medvezhii Creek quarry. Detailed mineralogical studies of taxitic gabbro–dolerites from the upper...nA; spectrum measurement time, 20–60 s. Taxitic gabbro-dolerites from the upper contact zone of the Norilsk-1 |  | | 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) | | Georg-August-Universit~t, G6ttingen, Federal Republic: of Germany With 11 Figures Received February 15, 1993; accepted...and vice versa). The iron deposits in the Bafq district of the central-east Iranian microplate probably...genetically related to the iron deposits of the Bafq district in the central-east Iranian microplate (Chogart...Gohar, Hamadan, and the iron deposits of the Bafq district (1 Chogart; 2 North Anomaly; 3 Mishdovan; 4 Chadur...the central-east Iranian microplate and a rift valley-like structure with associated magmatism. At its |  | | Book (edition) | | “Insel” Borates, [BO3]3- “inseln” Jimboite Hulsite Ludwigite Vonsenite Gaudefroyite 780 782 784 786 788 V/G...Affiliation/Address Luzerner Str. 10-12, D-12205 Berlin, Germany – Freie Universität Berlin, FB Geowissenschaften...Mineralogie, Malteserstr. 74-100, D-12249 Berlin, Germany Bundesanstalt für Geowissenschaften und Dr. Frank...Stilleweg 2, D-30655 HanDr. Thomas Oberthür nover, Germany Dr. Thomas Kenkmann Museum für Naturkunde der ... zu Berlin, Invalidenstr. 43, D-10115 Berlin, Germany Prof. Dr. Robert Marschik & Ludwig-Maximilians |  | | Catalog/List | | the l1 prehnite overcomes the cut edges ! Copper Valley Digging , I Gobobosebberge Erongo region Namibia...orange crystals on cockscomb Barytes Mibladen district , Morocco 6x4 £30 () , 1 5 APOPHYLLITE pale...10x6cm showing excellent play of colours Ampanihy District Madagascar £25 13 OLIVINE variety FORSTERITE...dark grey veins in Feldspar Ricksburg Karibib District Namibia 5x3x2.5 £ 18 16 HILLEBRANDITE pale blue...granular in magnetite with minor black Ludwigite fibres. Old marble quarry Kilchist Skye 4x4 £7 29 GOETHITE |  | | Catalog/List | | Florencite Ce, Greenockite,Harkerite,pure Kornerupine,Ludwigite,Native Bismuth nuggets Peprossite Ce, Purpurite...mass of black crystals, some Mount Malosa, Zomba District, free standing. ______ ______ Malawi Black crystal...Arizona Pure green cleavage AMAZONITE Landsverk quarry, Evje, Norway Ixl 50p lx2£l 11 felspar group____________...£3 7 Pure black mica plate new Analysis , Saga Quarry, Tvedalen near ANNITE Mica__________ paper available...Chrysotile, pale grey-green Ixl £1 County Bridge Quarry,Lizard Mg Fe SiO_______ massive. _________ .Cornwall |  | | Report (volume) | | ............................................ Ludwigite from Montana................................................................................ Ludwigite from Hungary........................................................................ Orbicular gabbro from Pala, San Diego County, Cal.................................... Calcite from Andreasberg, Germany.................................... Calcite from................................... Calcite from Germany....................................._.. Calcite |  | | Journal (article/letter/editorial) | | In the limestone contact-zone of the Camas Mor gabbro, Muck, Inverness-shire. C. E. Tilley 1947, Mineral...occurring 0·67 km south-west of the outlet of Loch Bad-na-Sgalaig, between Loch Maree and Gairloch, Ross...552.) Fluoborite Hexagonal Associated with ludwigite, datolite, szaibclyite and harkerite in the dolomite...Kilchoan, Ardna- C3zAl(AlSi)O, Tetragonal In the gabbro-limestonc contact zone ofCamas Mor, Muck, Inverness-shire;...Monoclinic In soils derived from a biotite-rich quartz-gabbro, Strathdon area, Aberdeenshire; associated minerals |  | | 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 |  | | 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 | | Manasseite,Zaj acite,Vlasovite, Foittite,Perhamite,Ludwigite, Augite crystals. I , '1' Also available,...mass of black crystals, some Mount Malosa, Zomba District, lxl ins £5 lx2ins _lyro?'~~e . __ __ _ ___ ___...- - - AMAZONITE Pure green cleavage Landsverlc quarry, Evje, Norway lxl S0p ALAMOSITE fcLp 10 g:...with Chrysotile, pale grey-green County Bridge Quarry,Lizard ,Cornwall MgFeSiO massive. Minas Gerias...½ Red brown fibrous on matrix BERAUNITE lxl £4 Germany FePO/4 £2.S0 Rich green masses with Siderite. Unusual |  | | Journal (article/letter/editorial) | | melting of heterogeneous lithospheric mantle or mafic lower crust, citing typically positive Nd values (+3...Prospect In production Coka Marin Valja Strzˇ Bor District/Timok Massif Cerovo area Porphyry Cu (7 structures...skarn Cu skarn, porphyry features Reškovica Bor District/Timok Massif Valja Saka Prospect Teregova-Lăpuşnicel...1952–1995 Kremikovtsi Dikanyite Panagyurishte District Elatsite Chelopech Assarel Medet Krassen ...Past producer Past producer Bakadjik Burgas District Zidarovo Vurly Bryag Rossen Past producer Past |  | | Report (volume) | | ....................................... 95 Ludwigite -........-.-.--..-.--.-..--...........---.......ARSENIDES. BISMUTHINITB. From the Rosario Mining District, Sinaloa, Mexico. W. I-I. Melville. Described...mine of the Canadian Copper Company, Sudbury, district of Algoma, Ontario. Specific gravity, 4.541 ~...corrected for impurities. From the Missouri mine, Halls Valley, Park County, Colo. Analyses, by Hillebrand, of...82 CRYOLITE. From St. Peters Dome, Pikes Peak district, Colorado. Described by Cross and Hillebrand 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 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 | | 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...trona. 2i SaSSOlite 34 boric acid (3) Death Valley, Califorma/USA B(OH)3 Streak white. Mohs’ hardness |  | | Catalog/List | | botryoidal , small display piece 2x3 Boyleston Quarry, Glasgow Scotland 1 £10 20. ANA•LCIME around a...small 2x2 matrix, good location piece -- Boyleston Quarry south\ofGlasgow, Scotland £8, b) lxl with less...salmon-pink Barite in the matrix (not fluorescent) Crich Quarry Derbyshire £ I 0 28. HYDROXYL-HERDERITE good pale...pinkish crystal about half inch size (Linopolis district, Divino das Laranjeiras, Minas Gerais, Brazil)...colourless glassy crystals on large 1x 1 inch rock OAS quarry near Rome Italy £8 32. CALCITE pseudomorph after |  | | Journal (article/letter/editorial) | | gold-bearing skarn deposits in the middle and lower Yangtze River Valley and adjacent regions Yiming Zhao ) ,...28 April 1999 Abstract The middle and lower Yangtze River Valley and adjacent regions are the most important...the Triassic, Carboniferous-Permian and Middle to Lower Cambrian formations. The related intrusions are...skarns, magnesiomagnetite, magnesioferrite and ludwigite are locally abundant. The metasomatic zoning in...reserved. Keywords: geology; skarn; Yangtze River Valley 1. Introduction China has many well-developed |
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