 | | Journal (article/letter/editorial) | | OF M IN N E S O T A B Y G R A N IT E A N D B Y GABBRO M AGM AS 1 UY FRANK F. GROUT 2 (Read before the............................. 998 Terminology of contact metamorphic rocks................................................................ 1007 Granite contact action on slates in other districts..............of the Duluth gabbro magma and related sills on slates in Minnesota.. 1008 The gabbro................................................ 1008 The gabbro contact zone......................................... |  | | Journal (issue) | | consisting, in part, from bottom to top, of peridotite, gabbro, dike swarms, basalt (often as pillows), and oceanic...continuous layer between them and the underlying gabbro (Figure I). The dikes are thought to have been...rock. Ideally. the dikes pinch downward into the gabbro unit, from which they are thought to have been...The relation between the dikes and the underlying gabbro constitutes one of the major field and petrogenetic...ophiolite genesis. The central question of the gabbro-diabase relationship was succinctly pointed out |  | | Journal (article/letter/editorial) | | resource base for the nickel industry in Russia. Mining plants in Rezh, Ufalei, Orsk, and Svetlyi Settlement...of 2.5-2.75%. As high-grade ores of the Ufalei district became exhausted, technical requirements for the...Rezh district 150; (III) Ufalei district 100; (IV) Sakharin district 400; (V) Kempirsai district 300;...300; and (VI) western Turgai district, including the Buruktal area 450 (Karta .... 1985). We had concluded...m and, therefore, are not suitable for openpit mining. The quality of explored reserves at deposits under |  | | Book (volume) | | Anhydrite 186 186 196 202 219 CARBONATES . Calcite . Magnesite Rhodochrosite Siderite Dolomite Ankerite...magnesian limestones. It is found typically in contact aureoles, having been formed by the dissociation...+ MgO + CO2, and often occurs associated with calcite, forsterite, etc., and surrounded by a rim of brucite...hydration of the peri¬ clase. It is known from calcite-brucite marble, or predazzite, as at Crestmore...such assemblages has been recorded from the contact of a gabbro dyke with limestone at Camas Mor, Muck (Tilley |  | | Book | | a world leader in the production of e0pper. the mining areas of Cornwall and Devon became important producers...player in world zinc produ.:tion. Th· development of mining tin particular during the 18th and 19th centuries)...continue unabated despite there n '" being , ·~- link mining acti,·ity in Britain or Ireland. My original intention...onNewMinerals,Nomenclature andClass::ication. Co. County. EMPElectronmicroprobe - an instrument usedto ...with older fluorite specimens from Weardale in County Durham being a case in point. Many of these specimens |  | | Report (issue) | | working during the resurvey. The collections of mining iv records at the Lowther Estate Offices, Leconfield...of the Cockermouth Fic. surrounding country district to the ae 2 Fic. Fic. Sketch map showing the...the principal folds and faults of the district eo Sketch map to illustrate position of some important...melagabbro, L = leucogabbro, = fluxion banded gabbro; D = intermediate granophyre, N B = = melagrano-...phyre, H Fic. a in Skiddaw Slates Buck Kirk gabbro, FB Fic. Fic. eo .. Re £3 : = normal granophyre | | | Report (issue) | | working during the resurvey. The collections of mining iv records at the Lowther Estate Offices, Somerset...Sketch map showing the relation of the Cockennouth district to the surrounding country .. 2 Sketch map showing...showing the principal folds and faults of the district . . 11 Sketch map to illustrate position of some...leucogabbro, B = Buck Kirk gab bro, FB = fluxion banded gabbro; D = melagrano• phyre, H = intermediate granophyre...Collieries 198 Sketch map illustrating glaciation of district . . 223 .. .. .. .. PLATES PLATE I PLATE |  | | Journal (article/letter/editorial) | | Eastern Desert of Egypt is well known as a gold-mining area since ancient times and more than * Present...(Fig. 1). Records of mining for gold range back to predynastic times and mining activity continued at... .). Infrastructure in Geanticline. Major shear zone. Trend lines. (1) Ferian; (2) Barud; (3) Um Had;...funnel of alteration is present. Here, the alteration zone beneath the orebody at Um Samuki area is characterized...deposits and their footwall alterations (the keel zone) in the Eastern Desert of Egypt (Botros, 2003): |
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