 | von Seckendorff, V., Drüppel, K., Okrusch, M., Cook, N. J., Littmann, S. (2000) Oxide-sulphide relationships in sodalite-bearing metasomatites of the Epembe-Swartbooisdrif Alkaline Province, north-west Namibia. Mineralium Deposita, 35 (5) 430-450 doi:10.1007/s001260050254 | Journal (article/letter/editorial) | | Oxide±sulphide relationships in sodalite-bearing metasomatites of the Epembe±Swartbooisdrif Alkaline Province, north-west...north-west Namibia Received: 22 October 1998 / Accepted: 27 October 1999 Abstract The south-eastern...south-eastern part of Kunene Intrusive Complex (KIC), Namibia/Angola, is host to volumetrically signi®cant, and economically... concentrations of sodalite in the area around Swartbooisdrif, north-west Namibia. The mineralisation...metasomatic exchange with carbonatites of the Epembe± Swartbooisdrif Alkaline Province. This process led to the |  | | Journal (article/letter/editorial) | | MINERALIZATION IN FERROCARBONATITE, SWARTBOOISDRIF, NORTHWESTERN NAMIBIA: CONSTRAINTS FROM MINERAL COMPOSITIONS...dykes of Swartbooisdrif, northwestern Namibia, transect the anorthositic rocks of the Kunene Intrusive...fenitized wallrock anorthosite (albite, biotite and sodalite), with Fe–Cu–Ni sulfides (assemblage: pyrite,...metasomatic formation of nearly pure, SO4-free sodalite. A subsequent increase in f(O2) led to a systematic...equilibria, fluid evolution, Swartbooisdrif, Kunene Intrusive Complex, Namibia. Sommaire Les filons de ferrocarbonatite |  | Maier, W. D., Rasmussen, B., Fletcher, I. R., Li, C., Barnes, S.-J., Huhma, H. (2013) The Kunene Anorthosite Complex, Namibia, and Its Satellite Intrusions: Geochemistry, Geochronology, and Economic Potential. Economic Geology, 108 (5) 953-986 doi:10.2113/econgeo.108.5.953 | Journal (article/letter/editorial) | | Geology, v. 108, pp. 953–986 The Kunene Anorthosite Complex, Namibia, and Its Satellite Intrusions: Geochemistry... 02150, Espoo, Finland Abstract The Kunene Complex of Namibia-Angola is one of the largest anorthosite...leucotroctolite intrusions. The Namibian portion of the Kunene Complex measures ~80 × 50 km, ~4,000 km2, and is...undeformed phase whose absolute age remains unknown. The Kunene leucotroctolites are among the least evolved troctolites...as −3; δ18O up to 7.5‰). In the periphery of the Kunene Complex are several, relatively small (<10 km2) |  | | Book | | Mountainland The Central Northern to Northwest Region including Damaraland The Central Namib Desertand...s Onganja Mine and Surrounding Copper Deposits The South The Pegmatitesin Central Namibia Luderitz and... Encyclopedia of the Mineralsof Namibia 443 Meteorites in Namibia Bibliography Index Photo credits...__ Republic of Namibia The President State House W°Ntdhoek FOREWORD Namibia is endowed with an...from near and far. Fine mineral specimen from Namibia are displayed in all the famous natural science |  | | Book | | REPUBLIC OF NAMIBIA - MINISTRY OF MINES AND ENERGY GEOLOGICAL SURVEY THE MINERAL RESOURCES OF NAMIBIA FIRST...ENERGY Of the several hundred minerals present in Namibia, around sixty have been exploited. some, such as...base metals and industrial minerals have helped Namibia rank amongst the top five mining countries in Africa...terms of production and reserves. In this context, Namibia is a major producer of copper, lead, zinc, cadmium...unpublished. It is evident that mineral exploration in Namibia, as elsewhere. has changed from serendipitous discoveries |  | | Journal (article/letter/editorial) | | rare-earth fluorcarbonate from the Aris phonolite, Namibia, Mont Saint-Hilaire and the Saint-Amable sill,...cavities in the Aris phonolite quarry, central Namibia. It was confirmed as an unknown mineral in 2000...NAMES of nepheline and sodalite syenites, with associated alkaline pegmatite dikes, xenoliths, and igneous...lenticular patches within syenite and syenite sodalite xenoliths. It occurs as pale pink to silvery to...mosandrite, natrolite, gonnardite, and fluorapatite. In sodalite syenite xenoliths, it is associated with aegirine |  | | Journal (issue) | | crystal, 10.5 cm, with quartz, from the Yaogangxian mine, Hunan, China. Private collection; Jeff Scovil photo...well before the moisture and dust of an operating mine had had time to exert their destructive influences...the Karnasurt mine. On the following day, Nickolay Pavlov, chief geologist of the mine, and geologist...lilac ussingite, lemon-yellow vuonnemite, crimson sodalite, orange eudialyte, salmon-pink serandite, dark-brown...tite. In some areas, the foyaite is enriched by sodalite and villiaumite lenses up to 20 cm thick; these |  | | Book (edition) | | A splendid specimen of wulfenite from Tsumeb, Namibia Half-title: Quartz, Nababeep Opposite: Mimetite...world famous Tsumeb mine Overleaf: Crystalline incrustations of vanadinite, Namibia Contents Acknowledgements...attached list of working mines. The geological map of Namibia which shows the mines and also farm boundaries...Goodhousc on the Orange River cast of Vioolsdrif. In Namibia amethyst can be found north-east of Otjiwarongo...station in the Northern Transvaal, and ; Rossing in Namibia. Asteriated material with well-defined stars hat |  | | Journal (issue) | | Newsletter $6.00 Fibrous Malachite from the Mindingi Mine Katanga, Democratic Republic of the Congo Tony Nikischer...Specimens of fibrous malachite from the Mindingi Mine in the Kambove District of Katanga began to appear...ten {I 0) years ago (see figure J ). Although the mine was first worked superficially in the 1930s for...DRC as well (see figure 2). Today, the Mindingi Mine continues to produce wonderful malachite specimens...common forms seen from most nearby localities in the region. Solid, botryoidal malachite samples are currently |  | | Journal (issue) | | Endlichite and descloizite from the Chalk Mountain mine, Churchill County, Nevada ........................MALACHITE pseudomorph after azurite from Tsumeb, Namibia. The group is 3 inches tall, and is no. 8877 from...subscription = $44 195 Photo: Fishtail selenite mine in Coahuila, Mexico We don’t claim to be the largest...(such as the Blanchard mine, NM; Ojuela mine, Mapimi, Durango, Mexico; New Nevada mine, Batopilas, Chihuahua...Chihuahua, Mexico; and the San Fran cisco mine, Sonora, Mexico). We also have an active acquisition program |  | | Journal (issue) | | fin e exam ples o f apophyllite, chalcopyrite, galena, hedenbergite, m anganaxinite, sphalerite and other...groups, large and lustrous black ilvaites, superb galena groups and outrageous fist-size crystals of green...tours for collectors are permitted by the friendly mine management, and visitors have even been allowed...the area and purchased the rights to the Verchniy mine. Operations to extract copper, lead and zinc began...Dal’negorsk. GEOLOGY The geology of the Dal’negorsk region is tectonically complex because of its relationship |  | | Journal (article/letter/editorial) | | Anorthominasragrite V4+O(SO4•5H2O T RICLINIC Locality: North Mesa mine group (west ½, southwest ¼ of section 35, Township...polylithionite, pyrochlore, fluorite, calcite and galena. General appearance: As zoned rhombohedral crystals...pegmatite. Associated minerals are: nepheline, sodalite, K-feldspar, natrolite, pectolite, aegirine, shcherbakovite...Locality: The Berisal Complex, Wasenhorn, Simplon Region, Switzerland. Occurrence: In schists associated...Name: After the Gantertal, a famous valley in the region in which the mineral was found. Comments: IMA No |  | | Book | | quarry Miarolitic cavities in nepheline syenite Sodalite syenite Igneous breccia Pegmatites Marble xenoliths...the igneous complex. In nepheline syenite and sodalite syenite pegmatites, just as in the case of granitic...named Monteregie is now the current name of the region. he name Mont Saint-Hilaire is used interchangeably...what is now the Richelieu River and Lake Champlain region, Samuel de Champlain first named the mountain Mont...protecting the only remaining primeval forest in the region. THE EARLY SCIENTIFIC INVESTIGATIONS T he earliest |  | | Report (issue) | | the locality Rob gives only “Erongo Mountains, Namibia” but on the Marin Minerals website (cited above)...======================================== Region, Namibia.” This sounds familiar, for jeremejevite crystals...Mountains, Namibia. The Arkenstone specimen; Joe Budd photo. Calcite, 5.5 cm, from the Conco mine, North...lustrous, limpid gray-green calcite from the Conco mine, North Aurora, Kane County, Illinois, which are...a big pocket system in the underground limestone mine 20 miles west of downtown Chicago. The forms of |  | | Book (edition) | | Turquoise, polished. 55 mm, ZhiJandy, Kazakhstan, G Galena, 45 mm, Madan, Bulgaria, G SphaJerite. xx 12 mm...Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California, G Publi!>hed by Grdllit.u.o. Stefanikova43...abbreviated, e.g. canton (Switzerland), vilayet (Turkey), region (Chile), kray and oblast (Russia). The country...by Mobutu, and is now the Katanga administrative region again. The former Kivu province is now divided...United States or of the Upper Silesian historical region in Poland, where the importance of ore-bearing |  | | Journal (article/letter/editorial) | | JanuaryFebruary: Ferro-axinite on calcite, Dodo mine, Puiva Mountain, KhantyMansi Avt. Okrug, Tyumen’...MarcNApril: Pyromorphite on quartz, Manhan River mine, Easthampton, Hampshire County, Massachusetts. Marvin...shaft, South Hecla branch of the Calumet and Hecla mine, Houghton County, Michigan. A. E. Seaman Mineral...JulyIAugust: Vanadinite and wulfenite, Old Yuma mine, Pima County, Arizona. Les Presmyk specimen, Jeff...November/December: Rhodochrosite, area 28, level 20, Eagle mine, Gilman County, Colorado. Dave Bunk specimen on |  | | Book | | Republic, 6 cm). Figure 1.2 Halite crystals (Namibia, 5.8 cm). 6 section devoted to the display of...(field of view 8 cm). Figure 1.3 An opencast iron ore mine (Postmasburg, South Africa). 7 microscopes, or...in groups 8–12, show marked deviation. In this region of the Periodic Table, electronegativity increases...bonded substances, the electrons are confined to the region between the nuclei of the bonded atoms and they...The effect is especially strong in the mineral galena (lead sulphide). These crystals were used as a |  | | Catalog/List | | 4 TINZENITE rich, orange mass on quartz Cassagna Mine, Liguria Italy 2 x 2.5cm £7 7 "MOHAWKITE" a burnjshed...surface . good coverage about 1.5mm thick Cassagna Mine, Ne ,Graveglia Valley, Liguria Italy, I collected...crystals over most of the surface Sefrou, Fes-meknes region Morocco £25 26 BANALSITE brown massive with some...some reddish hematite areas 6x3.5x2cm Benallt Mine , Rhiw, Llyen North Wales £20 28 OLIVINE "bomb" green...remarkably solid piece for this species Erongo region Namibia 6x5 £25 37 P AL YGORSKITE very light weight |  | | Journal (article/letter/editorial) | | deposited, f'ollowed by chalcopyrite, sphalerite. galena. fluorite. and calcite. Some miaroles contain very...micrometers. Micrograph by T. Buchholz. Distorted galena crystals, Cary Mound, Wisconsin; backscattered...extremely elongated crystals. Acicular, hollow galena crystals scattered about in a matrix of chlorite...found in one miarole. On the pyrite matrix the galena tends to emerge through gaps between pyrite crystals... heightening the resemblance to a sword. Other galena crystals show a more typical octahedral habit, |  | | Journal (article/letter/editorial) | | (vr). Morveoarrrn? Gnepmrn: granular masses in galena, Ger,nre: lamellar or granular rnasses with sphalerite...Srrnr'r,: (pleonaste), (c). Mlclrlrrre coatings on galena (vr). Hruarrra black, or dark green crystals with... andradite, melanite, etc.) with vesuvianite, sodalite, and cuspidine; in geodes, (c Moxrrcrrrrte : colorless...dark brown to black; in geodes with garnet, mica, sodalite, pyroxene, amphibole, pleonaste, forsterite, davyne...colorless, with sphalerite. Arqcr.esrrn: alteration of galena, (vr). Prntcusn and hydromagnesite Monte Somma |  | | Book | | photos of minerals— listed generally either as a region or a corresponds to the group of minerals dis-...Cleavage of The suspended magnetized needle in a galena and halite will always produce compass is sensitive...regions, and volcanic vent deposits. Found in: region around Vesuvius Etna/Italy; Hungary; Armenia; Kazakhstan/USSR;...colemanite, calcite. 64 Found in: Tuscanny/Italy; Kaps region/USSR; California, Nevada/USA; Atacama/ Chile; Argentina;...Tyrol/Austria; Alsace, region around Paris/France; Tunisia; Morocco; Usbekistan, western Ural region/USSR, Utha, |  | | Report (issue) | | plwto Plldi.wp11�. Yaalte: 12.5 cm wide Siglo XX Mine, ,U� Bustillo province, Potosi Malty Zinn colkdknt...in Oruro ... 26 BY ROBERT B. COOK The Morococala Mine ..................................................Sapo Sodalite Deposit: A Pre-Columbian Gem Mine ........... 80 BY ALFREDO PETROV The Anahi Mine .......(Chacaltaya, about 5,100 meters), the highest metallic ore mine (Chorolque, up to 5,450 meters), and so on. But...deposits, including the unique Anahi "ametrine" Mine (page 85); Cerro Manomo, the world's largest carbonatite |  | | Book | | proportions—every molecule of both is other sulfides, such as galena. It also weathering product ofprimary silver ;...Sources: @ Chile ¢ France ¢ Greece ¢ Mexico @ Namibia @ California, United States damite is a rare mineral...paradamite, which was first identified at the Ojuela Mine in Mapimi, Durango, Mexico, and confirmed as a...mineral through the alteration of nepheline or sodalite. Analcime is related to leucite, a silicate of...Massachusetts, United States ¢ Zimbabwe amed for the region of Spain where it was first discovered, andalusite |  | | | | arsenopyrite on rounded, grey galena and surrounded ce ne white calcite, from!iheBluebell Mine; Riondel, Digitized...stibnite, cobaltite, arsenopyrite, molybdenite, galena are included here. Oxides: Minerals with oxygen...tourmaline, mica, feldspar, nepheline, zeolite, sodalite, bonded in a group around a central silicon atom... black), p. 30 | stibnite (lead grey), p. 62 | galena (silver grey, dull lead), p. 56 | molybdenite (lead...(blue), p. 236 chrysocolla (blue green), p. 216 sodalite (blue), p. 234 Green chlorite (pale green), |  | | Book | | Rocks and Minerals is in itself a veritable gold mine. Readers learn about the inside of minerals — the...the hydrothermal stage: many sulfides including galena, sphalerite, pyrite, stibnite, and cinnabar, as...extrusive and intrusive rocks, and pro- duces dikes. Let us now move on toa more detailed discussion...ASSOCIATED MINERALS AND LOCALITIES: submettalic. with galena, argentite, calchopyrite, ASSOCIATED MINERALS...sublimates is present in sand and gravel. forms galena. It can be an accessory min- in solfataras. Beautiful |
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