 | | Journal (article/letter/editorial) | | solution series [Ca(Fe,Mg)SiO4] would exsolve from Ca-bearing olivine of the fayalite-forsterite series only...now, members of the monticellite-kirschsteinite series have only been described from high-temperatures...the kirschsteinite-monticellite and the fayalite-forsterite series. This type has been described from only...et al. (1978) observed exsolution lamellae of forsterite in monticellite from contact metamorphic rocks...factors of Si, Fe, Mn, and Mg in fayalite by comparison with a fayalite. Both of these samples were previously |  | | Journal (article/letter/editorial) | | crystallization. 1. Introduction In the olivine series (Mg,Fe)2SiO 4 magnesium and ferrous iron are located...°C. However, its subsequent cooling history at lower temperatures is not known. 2. Source of samples...experiment. The terrestrial samples include a fayalite from the type locality at Rockport, Massachusetts...Massachusetts a 12018,35-01 Modoc b B1c S14 d Fayalite molecular % Ca/(Mg+Fe+Ca) atomic ratio 97 33...33 22 18 10 Rock 0.0007 0.001 ND 0.004 0.004 marble coarse-grained lunar basalt chondrite picritic |  | | Book (edition) | | electrons, in effect shed them to drop down into a lower, filled-shell configuration, while those which...negative in charge. This process is illustrated in the lower part of Figure 4. Forces between ions are of a...when the glue becomes too dry. If we take a single marble and see how many others like it can be glued to...find that six marbles can surround the original marble in the flat hexagonal pattern shown at the ATOMS... Now, as shown at B in Figure 5, we can fit a marble in each of the corners marked with dotted circles | | | Book (edition) | | electrons, in effect shed them to drop down into a lower, filled-shell configuration, while those which gain...negative in charge. This process is illustrated in the lower part of Figure 4. Forces between ions are of a far...when the glue becomes too dry. If we take a single marble and see how many others like it can be glued to...find that six marbles can surround the original marble in the flat hexagonal pattern shown at the ATOMS... Now, as shovvn at B in Figure 5, we can fit a marble in each of the corners marked with dotted circles |  | | Book (edition) | | ores or from masses of native metal by smelting at lower temperatures, while iron, which rarely occurs native...N icolaus Steno (1638-1686), discovered that a series of measure1nents 1nade on quartz crystals from...or cavity lining), calcite. G ranu lar Granite, marble, galena, sphalerite. Fibrous Serpentine (asbestos)...Co1nmon opal, obsidian, quartz. Granular Fracture Marble, granite. Splintery Fracture Goethite, hematite...(crystals and cleavages). Carbonates Calcite (crystals, marble, clear cleavage rhomb), siderile, aragonite (sixling |  | | Book (edition) | | Mountains, Utah; (lower /eft) rnodochrosite, N’Chwaning mine, South Africa; (lower left, center) wulfenite...Cloud mine, Arizona; (lower right, center) mimetite, Tsiimehb, Namibia; (lower, right) gold, Amazonas...could be resolved, we are now prepared for a long series (welcome for the next edition) of letters pointing...such substances may form a continuous isomorphous series. isotropic In crystal optics the characteristic...value than a precious stone, ordinarily one with a lower hardness and brilliance and/or greater abundance | | | Book (edition) | | Mountains, Utah; (lower le ft) rhodochrosite, N'Chwaning mine, Sou th A frica; {lower left, center) wulfenite...Clouo rrnn·a, Arizona; (lower right, center) mimetite, Tsurneb, Namibia, (lower, right) gold, Amazonas...could be resolved, we are now prepared for a long series (welcome for the next edition) of letters pointing...such substances may form a continuous isomorphous series. isotropic In crystal optics the characteristic...value than a precious stone, ordinarily one with ~ lower hardness and brilliance and/ or greater abundance |  | | Report (issue) | | feldspar mine Currie barite occurrence Pakenham quarry Cedar Hill soapstone occurrence Galetta celestine...Angelstone quarry Tatlock Omega quarry Black Donald mine Renfrew area Jamieson Lime quarry Renprior mine...Jamieson molybdenite mine Easton Minerals quarry Two Island marble quarry Ruby mine McCoy mine v 41 42 44...81 82 82 83 85 86 86 87 89 89 90 vi Mayo marble quarry Renfrew–Madawaska area Renfrew County Road 4...Avenue) roadcut Highway 60 quarry Jamieson marble quarry Bonnechere quarry Kneichel quarries Bonnechere |  | | Book | | (SiO4) group in the mineral forsterite. The chemical shorthand for forsterite is Mg,SiO4. This is known...bracket group would around the dis- result in forsterite symbolized thus: (Mg2)**(SiO4)*~. It is an interesting...as olivines. These are called forsterite, Mg2SiO., and fayalite, Fe,SiO4. these minerals Above:...consisting entirely of membersiof the olivine series another pair of strikingly different polymorphs...the crystals that form are no longer of forsterite and fayalite but of a single olivine containing both | | | Book | | (Si04) group in the mineral forsterite. The chemical short¬ hand for forsterite is Mg2Si04. This is known...the dis¬ tinctive (Si04) group would result in forsterite symbolized thus: (Mg2)4 + (Si04)4_. It is an...rock consisting entirely of members of the olivine series phosphate because it contains the tetrahedrally...known as olivines. These are called forsterite, Mg2Si04, and fayalite, Fe2Si04. If we melt a mixture of...are no longer of forsterite and Both are composed entirely of the element fayalite but of a single olivine |  | | Report (issue) | | Nova Francia et Canada, 1597. This map is one of a series of maps of North America produced by Cornelius...gypsum occurrence Cap au Taureau occurrences Fatima quarry Baie du Sud occurrence Île du Havre aux Maisons...occurrence Butte Ronde occurrence Chemin des Buttes quarry Buttes Pelées Plage de la Dune du Sud Dune du Sud...White Hills quarry Logy Bay amethyst occurrence Middle Cove, Outer Cove occurrences Torbay quarry Bauline...occurrence Signal Hill occurrence South Side Hills quarry Miner Point (Shoal Bay) mine Witless Bay shoreline |  | | Report (issue) | | diffraction. Ann was the author of the very popular GSC series “Rocks and Minerals for the Collector”, which covers..........11 The Ledge (Charlotte County Granite) quarry........................................................................15 Bayside Black Granite quarry..............................................................................17 Digdeguash Lake quarry.......................................................................................20 Letang quarry............................................... |  | | Report (volume) | | Stanford University Stanford, California 94305 Series Editor Paul H. Ribbe Department of Geological...loss of momentum in M.S.A.'s production of this series and encouraged several authors of this book to...material contained in this now highly successful series. The First Edition of Orthosiliaates was the...but are now known not to be such. Paul H. Ribbe Series Editor Blacksburg, VA ACKNOWLEDGMENTS The editors... CHAPTER 2 , Page continued GARNET-HYDROGARNET SERIES X3Y2(Si04)3_ ( H ^ ) (0 £ p £ 3) Eydrogrossular |  | | Report (volume) | | Rand (Ontario Kirkland, Hudson Rand) mine Tundra quarry Wright-Hargreaves mine Sylvanite mine Toburn (Tough-Oakes...mine Riverside (Bazooka) mine Canada Black Granite quarry Horne mine Mines along highways 101 north and 111...described in the Geological Survey of Canada guidebook series of Rocks and Minerals for the Collector covering...listed systematically as follows: name of the mine, quarry, or occurrence; minerals and/or rocks found (shown...spectacular discovery of native gold in the Porcupine district in 1909 attracted the gold-seekers in that direction |  | | Report (issue) | | 37 39 39 Cobalt district Cobalt district silver mines Road log to the Cobalt district mines Townsite mine...Guigues limestone quarry Guigues sandstone quarry Wright mine Ville-Marie granite quarry Terra Nova mine...sensational discoveries of native gold in the Porcupine district in 1909. Thus, within a few years, the area was...la découverte sensationnelle d’or natif dans le district de Porcupine en 1909. Ainsi, en quelques années...each locality is listed as follows: name of mine, quarry, or occurrence; minerals or rocks (in capital letters); |
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