 | | Journal (article/letter/editorial) |
| Mineralogy, and Geochemistry of the Nkamouna Serpentinite: Implications for the Formation of the Cobalt-Manganese...laterite and a lower in situ serpentinite-derived laterite. The serpentinite is massive with a nonpseudomorphic...genetically related phases: Serpentinite-I and Serpentinite-II. Serpentinite-I is characterized by antigorite...and magnesite, and Serpentinite-II by antigorite and magnesite. Both serpentinite types are extremely...extremely low in sulfides. Serpentinite-I is the dominant and oldest phase and was derived from a subcontinental |
 | | Journal (article/letter/editorial) |
| quartz, and rutile, among others. Serpentinite Serpentinite outcrops in bands and pods along the length...includes artinite, hydromagnesite, magnesite, goethite-hematite, and quartz. guerian 1983; Merguerian...because of the widely disseminated iron oxides goethite-hematite that formed from the decomposition of...Ferrohornblende Fluocerite-(Ce) Fluorite Forsterite Galena Goethite Gold Graphite Grossular Gypsum Harmotome Hematite...Cambridge] at 05:27 17 June 2016 Figure 37 (top). Goethite from Staten Island. 7 × 5 cm, SIM G3496. Figure |
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| Number Five Articles The Val Graveglia m anganese district, Liguria, I t a ly .............................RHODOCHROSITE crystals to 1.6 cm, from the Uchucchacua district, Huanuco depart ment, Peru. (See vol. 28, no...and occasionally fine minerals. The manganese district of Val Graveglia in northern Italy produced over...beauty or rarity. LOCATION The northern coastal region of the Tyrrenian Sea is called Liguria: the name...time the region has had a complex history. Genoa is the main city and the main harbor of the region; the |
 | | Book |
| the setting and origin of major deposits in the region, together with information on tonnages and grades...tungsten-gold and lead-zinc-silver deposits of the Tighza district of Morocco, proposing links to granite-related...polymetallic vein deposits of the Edough-Cap de Fer district of Algeria, including fluid inclusion data that...porphyry–epithermal transition recorded in the Ouixane iron district of Morocco, using new geochronological and fluid...(±gold ±silver) deposits of the famous Bou Azzer district in Morocco, and proposes a long-lived, magmatic-hydrothermal |
 | | Book (edition) |
| intrigue exploration geologists who work in that region. Among recent explorations is that of D. D. Brown...in several areas of this state. In the Helena district, activity centers mainly on the gravel beds of...early phase of mining consists of a pseudomorph of goethite after a rhombohedral crystal of some carbonate...mm) long and 9/ 16 inch (14 mm) in diameter. The goethite "crystal" also includes a needle of dark red rutile...invariably altered to goethite but remain sharp and sometimes lustrous. Some of the goethite pseudomorphs that |
 | | Report (volume) |
| palaeosurfaces in the volcanic area of Central Slovakia India Wippowson, M. Tertiary palaeosurfaces of...laterally into complex marine landscape in Central Slovakia. unconformities: it is these latter which are...familiarity with the geological history of his or her own region of interest. Consequently, in Europe ancient palaeosurfaces...been simply divided in terms geographical region. The result is a collection of research papers...palaeosurfaces in the voleanic area of Central Slovakia. This volume. ’ GEOLOGICAL IMPORTANCE Lat |
 | | Report (issue) |
| ................. 39 Central and northwestern region .................................................resources 53 Geological map of the Agnew - Mount Keith region .................................................Generalized tentative stratigraphy of the Forrestania region .................................................nickelfrom mines developed in the Eastern Goldfielh region since 1966. Annual state mine production since...smelter was built at the capital Noumea in 1877. The district that became the world’s principal single source |
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| Morocco. T,vo sections through the Dutch coal mining district Cairo-Suez gravity section . . . . . . . Sketch.... . . . . . . . . Sketch map Bou Azzer mining district, Anti-Atlas Three sections through ophiolitic...km north of the outcropping Pre-Cambrian. The outcrops in the instructive Hoggar section (up to rooo...late sixties to southern Libya, where excellent outcrops of the Pre-Cambrian are known in the Tibesti area...also the results of geophysical work on basement outcrops. Nevertheless, the Pre-Cambrian stratigraphy has |
 | | Report (issue) |
| Richard A. Houghton (Eds.) 154 The Rocky Mountain Region—An Evolving Lithosphere: Tectonics, Geochemistry...(Eds.) 172 Volcanism and Subduction: The Kamchatka Region John Eichelberger, Evgenii Gordeev, Minoru Kasahara...would occur outside of this region. Finally, to tap such an extensive region, the convective circulation...hydrothermal circulation by mining heat from a fixed region of crustal rock. I then discuss heat transfer resulting...across axis to focused discharge in a much narrower region has been discussed. In a natural convection system |
 | | Book |
| the roof of the upper mantle); (iii) widespread outcrops of abyssal gabbros and serpenof the mantle origin...connection, the World Rift System is pictured as a region of the Earth in which the deep-seated evolutionary...interrelationship of such the new formation of the oceanic region. geological phenomena as the development of mid-oceanic...geological evolution of the Bay of Bengal platform region, which is an oceanic platform, is sedimen tation...surface and in close relationship to ultrabasic rock outcrops associated with the upper mantle matter. This |
 | | Report (Issue volume) |
| Finke Group....................44 Boorthanna Trough region...............................................................3 Early Palaeozoic of the eastern region..............................................................34 Early Palaeozoic of the western region...............................................35...watercourses................244 Northeast deserts region...................................................................250 Great Victoria Desert region............................................... |
