 | | Journal (article/letter/editorial) | | A weathered skarn-type mineralization in Ivory Coast: The Ity gold deposit Didier BĂŠziat a,â, Luc Siebenaller...Birimian Ivory Coast Gold mineralization Saprolitic zone Skarn a b s t r a c t Although the Ity deposit...operating mine in Ivory Coast, very few studies exist on this deposit. It is situated in Western Ivory Coast...Abidjan. The mine is presently operated and mined by SMI (SociĂŠtĂŠ des mines d'Ity â Society of Ity Mines),...in the Ity area form a cluster of mining operations of various sizes (Flotouo, Zia, Mont Ity), hosted |  | | Journal (article/letter/editorial) | | wishes to ob tain specimens from this famous local ity. Magnet Cove lies in southwestcentral Arkansas about...collectors. Many minerals reported from this local ity are present only in microscopic form or are materials...Sedimentary Rocks 1. 2. 3. 4. Calcite Hill Titanium Mine Molybdenite Prospect Brookite Prospect MAGNET ...E M B E R 1976 in the vicinity of the titanium mine. Specimens showing well developed crystal faces...found encrust ing crystalline calcite in the rutile mine from the specimens obtained whether this occurrence |  | Lawrence, D.M., Allibone, A.H., Chang, Z., Meffre, S., Lambert-Smith, J.S., Treloar, P.J. (2017) The Tongon Au Deposit, Northern CĂ´te dâIvoire: An Example of Paleoproterozoic Au Skarn Mineralizationâź. Economic Geology, 112 (7) 1571-1593 doi:10.5382/econgeo.2017.4522 | Journal (article/letter/editorial) | | Fluorite/fluorapitite Titanite *Forsterite *Phlogopite *Tremolite Clinoizosite/epidote Prehnite/pumpellyite Albite...is accompanied by forsterite, phologopite, and tremolite in thin, <1-m beds of altered basaltic tuff. Zone...prograde skarn (stage 2 diopside, phlogopite, tremolite, and forsterite) are partly replaced by talc,...â Fine- to coarse-grained Zone B Diopside + tremolite + forsterite â + phlogopite 1Talc Epidote +...diopside; zone B = localized diopside + phlogopite + tremolite + forsterite; zone C = hedenbergite + ferro-actinolite |  | | Journal (issue) | | Good. Anthophyll ite Amosite Crocidolite Tremolite Chrysotile lavender, blue, or greenish. Ash-gray...minerals includes tremolite, crocidolite, amosite, and anthophyllite (see Table 2). Tremolite and anthophyllite...amphibole asbestos minerals found in Oregon. Tremolite (2CaO. 5MgO. 8Si02. H20), the most common of the...adjacent to serpentine. Actinolite, a variation of tremolite containing iron, is usually found with it. In...exed between the fingers. World production of tremolite is less than ~ of 1 percent of the total asbestos |  | Gunn, A.G., Dorbor, J.K., Mankelow, J.M., Lusty, P.A.J., Deady, E.A., Shaw, R.A., Goodenough, K.M. (2018) A review of the mineral potential of Liberia. Ore Geology Reviews, 101. 413-431 doi:10.1016/j.oregeorev.2018.07.021 | Journal (article/letter/editorial) | | of iron ore is currently restricted to a single mine, Yekepa, in the Nimba Range. Other important deposits...Niger, Burkina Faso and CĂ´te dâIvoire (Figure 2). At Ity in CĂ´te dâIvoire, located about 25 km from the Liberian...Africa. One of the areas studied was the Toulepleu-Ity area in Liberia and western CĂ´te dâIvoire, running...magnetite, hematite, iron sulfide, tourmaline and tremolite. A range of metals may be enriched in the gold-bearing...120,000 ounces per annum for the first 6 years of mine life (Aureus Mining Inc, 2016). Many other major |  | | Journal (issue) | | enitoite, San Benito Co., CA; rhodochro ite, Home Sweet Mine,Alma, CO;etc.).A few regions,by virtue of their...two ships and 1 20 men, Canier arrived along the coast of Newfoundland in May 1 5 34. After a (riendly...a company of adven turers. They arrived on the coast of Newfoundland much scattered and weakened by a...commenced at the deposit known as the Caledonia Mine. Events proceeded according to plan, but in a move...Rossie, and began to speculate upon the possibil ity of an ironworks. Uncertain about the mechanics of |  | Ogorodova, L. P., Kiseleva, I. A., Melâchakova, L. V., Vigasina, M. F., Krupskaya, V. V., Sudâin, V. V. (2015) Calorimetric determination of the enthalpy of formation of natural saponite. Geochemistry International, 53 (7) 617-623 doi:10.1134/s0016702915070071 | Journal (article/letter/editorial) | | considered as complex deposits, which are reasonable to mine for not only diamond but also for saponite clays...environment of the region, as well as the profitabil ity of the deposit (Kudryavtseva et al., 2003; Posukhova...(Camebax SX 50E microprobe) at the Mineralogical Department of the Geological Faculty of the Moscow State...Quartz 8.5 3.34 Tremolite 2.98 2.89 Dolomite 2.81 2.71 Tremolite 2500 Saponite Tremolite 5000 Quartz...Sample I also contains admixture of dolomite and tremolite amounting in total no more than 2â3%. Sample II |  | | Journal (article/letter/editorial) | | about ] mile southwest of the Crystal Graphite mine and about 11 miles southeast of Dillon in southwestern...Contribution No. 260 from The Mineralogical Laboratory, Department and Mineralogy, The University of Michigan, Ann...gneissconsisting chiefly of various proportions of: diopside,tremolite, phlogopite,epidote-groupmineralsand calcite.Some...Some varieties consist almost entirely of tremolite, blades of which reach 6 inchesin length; another...(albite-epidote-amphibolite Epidote, thulite, tremolite Thulite, epidote Sericite, chlorite, talc, calcite |  | | Journal (volume) | | Kere/ti mine, SF-f!3500 Orrlokllmprl, Finlalld Esa i\1atti/a, Oll/okllll/PII COIIJPatl)', Viban/i mine, SF-86...the Outokumpu region . In 1952 the Exploration Department of the Outokumpu Company started an extensive...and epico n tine nt al formation ~ LJ Uncontorrt}ity Basemcnt ⢠gn(!i ss Older sc hists (mostly amphibolite...pyrrhotite impregnation. Veined gmiss A long the coast and on the islands of the lake Juojärvi in the western...carbonatebearing serpentinite - carbonate rock - tremolite skarn - diopside skarn - guartzite. The outer |  | | Journal (article/letter/editorial) | | 1910). At one time, jasper was mined at the Parrot mine (Chittenden Co.) on a small scale for use in colorful...sources and are not included in the following local ity list. Perkins (1900) indirectly suggests that native...srontianite? talc tennantite-tetrahedrite titanite tremolite uvarovite valeriite vesuvianite wad washingtonite...on frac ture surfaces), "mountain leather," tremolite. Monkton orebeds south of East Monkton: kaolinite...limonite, wad. Bennington County Bennington manganese mine in Bennington: wad. Mount Anthony Formation (Mount |  | | Journal (article/letter/editorial) | | PREFACE D uring the journey along the west coast of Grcenland where some of the members of the G...hcterogeneoUB banded and veinod gneiSSâŹR along the west coast of Greenland, the gl'anodioritic gnciss of Sukkertoppon...yielded difTerently sinoe ~hey bad not ~be same fluid itY and mobility in ~heir solid state, The mobile crystalline...Due to the mobili!y of the elemen~s of ~he saJic mine"als (quar~z, felspars) thoso elemen~s will migra~e...part is a possibIe reason for the greater fluid itY af the eentral zone during the deformation. The mcelwnical |  | | Journal (article/letter/editorial) | | ciated h o rn b le n d e ro c k s in th e v ic in ity o f B altim o re. J o h n s H o p k in s U niv. C...dolomite â of Merrill), rich in phlogopite and tremolite, with diopside, black mica, black and brown tourm...decomposition of the am phibole into hydrous forms of tremolite and asbestus, serpentine, ophicalcite, talc, and...gneiss, selected for its fine grain and uniform ity in texture and m ineral composition, from the corner...of the island, and, though often found in proxim ity to the limestone, are never inclosed within it nor |  | | Book | | University of the State of New York, State Ed ucation Department, Albany, New York. 4 MAJOR AREAS OP MINERALIZATION...pyrite, and hematite. Operations have developed to mine all three ores, but only the first is of importance...Benson Mines, the world's largest open pit magnetite mine, near Star Lake. Not all of the ore mined here is...very attractive gemstones. One fault zone in the mine has produced exquisite ly crystallized specimens...mines,the only active mine today is the Vanderbuilt Corporation's Gouverneur Talc Mine at Sylvia Lake. The |  | | Report (issue) | | Report , . ......... A report prepared for the Department of Industry I I I I I I¡ I I I I I I I I I...Institute of Geological Sciences on behalf of the Department of Industry. The information contained herein...and Mineralogy Unit A report prepared for the Department of Industry London: 1976 I I I I I I I I I...(in back pocket). Geological map of part of the coast of Dnr,y Voe (in back pocket). Sketch maps of mineralized...Sulphide-bearing quart z-,ock Sulphide-bearing tremolite-schist Massive sulphides .o\mphibolite and hornblende-schist |  | | Journal (article/letter/editorial) | | a Robert C. Newton & Craig E. Manning a a Department of Earth and Space Sciences , University of California...Pressures ROBERT C. NEWTON AND CRAIG E. MANNING Department of Earth and Space Sciences, University of California...over a wide range of salinities at 5 kbar with tremolite but not with diopside. The presence of anthophyllite...anthophyllite as the stable hydrate, and talc-tremolite assemblages buffer SiO 2 fluid concentrations...on this principle. Table 1 presents his solubil ity prediction in units of log molality in the ranges |  | | Journal (article/letter/editorial) | | in the countryrock. At the northernlimit of the mine area, the baseof the dunite is separatedfrom the...of felsicvolcanic rocks.At the southernlimit of mine development,the dunite directly overliesthe matrix...need of reevaluation. This paper nizable in the mine area is a set of 1- to 70-m-ampresents some of the...komatiiteshavemostly been reconstituted to olivine-tremolite-chlorite- the country rocks to the north of the...the north and extendsto at least 5 km north of the mine area. Tectonized slivers of komatiite and Fe-Ni |  | | Journal (article/letter/editorial) | | minerals by density. However, the father from the coast, the more often the deviations from regularities...(annual mean calculated velocity). The average veloc ity increases to 10â12 cm/s at the periphery. The axial...group Muscovite Garnets Sphene Kyanite Apatite Tremoliteâactinolite Chlorite Clinopyroxene Orthopyroxene...erosion, i. e., activation of bottom currents. Activ ity of the bottom currents fostered an appreciable con...epidote, orthorhombic pyroxene are subordinate. Tremoliteâ actinolite, chlorite, corundum, zircon, and kyanite |  | | Report (volume) | | PRINTING OFFICE, WASHINGTON : 1964 UNITED STATES DEPARTMENT OF THE INTERIOR STEWART L. UDALL, Secretary ...California____________ 24 7. Chemical analyses of tremolite-talc rock from mines in the Silver Lake-Yucca...17. Chemical analyses of talc rock from Red Rock mine, Hembrillo Canyon-San Andres Mountains district...mineral to gross admixtures of talc, carbonate, tremolite, serpentine, and other minerals. Deposits of industrial...entirely of anthophyllite. Talc composed largely of tremolite is generally designated "tremolitic talc," but |  | | Journal (article/letter/editorial) | | not impor tant specimen producers: Newgate copper mine, which was used for a prison; the Allyndale quarry...believed that it may have come from the Tollgate mine or elsewhere in the Middletown area. D a n a (Palache...bismuth mine, but efforts to trace it to that locality have failed; it has been found at O l d Mine Park...of O l d Mine Park (Saganawamps) (1985). A chemist, he was chairman of the science department at Trumbull...in schist: dravite. B o o t h ' s b i s m u t h mine, Monroe, B a r n H i l l near junction with Route |  | | Journal (issue) | | even tho ugh on a small scale. The Storforshei iron mine in the Dunderlandsdalen is still in operation, working...sold as souvenir in a few places. The Mofje llet Mine, a once considerable but now depleted ase metal...NaCaCu5(AsO4 ) 4Cl, and the locality is the El Guanaco Mine, 93 km east of Taltal, Antofagasta Province. Chile...purchased from George Stevens fro m Schwan.:walder Mine, Raston Buttes District. Huerfago County. Col o...o rado labelled as uraninite. The Schwartzwalder Mine was the bi ggest producer ofuraninite in the U.S |  | | Journal (article/letter/editorial) | | Eastlick, Chief ResidentGeologist, of the Geology Department of the University of Arizona. The study was conductedunder...alluvium ARIZONA PHOENIX Ă Ă GLOBE Ă CHRISTMAS MINE cov- ers portionsof the flanks of the range and...fault, the Joker fault Location.---The Christmas mine, Banner mining has a similar displacement with the...and 27 miles south of Globe. The rocks within the mine area are well fractured, and several post-mineralfaults...mineralizationtypicalof the porphyrycopperdeposits of the mine. During and immediatelyafter World occurs withintheporphyry |  | | Journal (article/letter/editorial) | | chert, calcite, and dolomite (metamorphosedto tremolite) that precipitated with the sulfides; and argillite...separates slate 1910; Pardee and Park, 1948). The mine was belt rocks from Paleozoic intrusive and amphiclosed...ore stockpiled at the mine. 368 m. y. ago (Butler and Fullagar, 1978). The mine lies in the Carolina slate...slate belt, a northGeology of the Mine Area east-trending belt of volcanic and volcanicsedimentaryrocksthat...Carolina is 210 km The stratigraphic sequence in the mine area wide (Fig. 1). consists of tuffaceous sedimentary |  | | Journal (issue) | | heard Zoltai, of the Geology and Mineral ogy Department of the University of Minne sota, lecture on âNatural...associated more or less with im purities such as mica, tremolite, enstatite, quartz, and magnesite all constituents...and is often mottled. It was probably first a tremolite or enstatite schist, in which the metamorphic...KlondikÂŤ Later he worked his Rush in 1898 fatherâs mine in Silverton, Colorado, from 1901 to 1914. From...Mountains of Arizona in search of the Lost Dutchman Mine which, incidentally. they never found. He lived |  | | Journal (article/letter/editorial) | | ANDGEORGEB. SKIPPEN Ottawa-Carleton Geoscience Centre,Department of EarthSciences, CarletonUniversity, Ottawa...productivevertical kilometres veinsof the Beaver-Temiskaming mine andthe Hellens Eplett project in Lorraine Township...alsocollectedfrom '⢠Beaver-Temiskammg Mine the Beaver-Temiskaming mine. Additionalore sam⢠Hellens Eplett...collection of the Canadian Museum of Na- Siscoe Mine ture in Ottawa.From thesesamplesa total of more...Beaver-Temiskaming The silverveinsexaminedin this studyare hosted mine, asterisk= HellensEplett project,flower = Siscoemine |  | Chen, H., Clark, A. H., Kyser, T. K., Ullrich, T. D., Baxter, R., Chen, Y., Moody, T. C. (2010) Evolution of the Giant Marcona-Mina Justa Iron Oxide-Copper-Gold District, South-Central Peru. Economic Geology, 105 (1) 155-185 doi:10.2113/gsecongeo.105.1.155 | Journal (article/letter/editorial) | | ** YUMING CHEN 4,⥠AND TIMOTHY C. MOODY 5,âĄâĄ 1 Department of Geological Sciences and Geological Engineering...Centre for Isotopic and Geochemical Research, Department of Earth and Ocean Sciences, University of British...central Andes, is centered in Nazca Province, Ica Department, at latitude 15°12' S, longitude 75°7' W (Figs...(Figs. 1, 2), 10 to 15 km from the Pacific coast and below 800 m a.s.l. Hosted by Paleozoic metasedimentary...PerĂş SA., Resource Estimate of the Marcona iron mine, unpub. report, 2003, in Chinese). The Mina Justa |
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