3 edition of The origin and mode of occurrence of the Lake Superior copper-deposits found in the catalog.
|Statement||by M.E. Wadsworth|
|Series||CIHM/ICMH Microfiche series = CIHM/ICMH collection de microfiches -- no. 33163, CIHM/ICMH microfiche series -- no. 33163|
|Contributions||American Institute of Mining Engineers|
|The Physical Object|
|Pagination||1 microfiche (18 fr.).|
|Number of Pages||18|
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This book was converted from its physical edition to the digital format by a community of volunteers. You may find it for free on the web. origin formed supplies considerable processes commercial amounts weathering igneous rocks value purposes domestic iron ores district Mode of Occurrence ‘Azurite is of secondary origin, occuring in oxidized portions of Cu-bearing ore deposi. tis formed by the reaction of car- ‘bon dioxide and water with coppar sulphide or by Cu-beanng solutions wit carbonate and forms blocky to tabular crys- lals, slender prismatic cystals, rodular botryoidal masses, and stalacitic ane 5/5(1).
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Origin and mode of occurrence of the Lake Superior copper-deposits. [Place of publication not identified]: [publisher not identified], [?] (OCoLC) Material Type: Document, Internet resource: Document Type: Internet Resource, Computer File: All Authors / Contributors: M Edward Wadsworth; American Institute of Mining Engineers.
z origin and mode of occurrence of copper-deposits. The rocks south of T ikc Superior have been formed in three ways: 1st, bv mechanieal means ; 2(1, by. A text-book of ore and stone mining.
CHAPTER I. MODE OF OCCURRENCE OF MINERALS. Authors. The origin and mode of occurrence of the Lake Superior copper-deposits [electronic resource] / ([S.l.: s.n., ?]), by M.
Wadsworth and American Institute of Mining Engineers (page images at HathiTrust; US access only). Page - Phoenix, Cliff', Central, Copper Falls and other mines in Keweenaw county. In the vicinity of Hancock, Houghton and Opechee some of the old lavas are mined.
As stated before, these old lava-flows, which now form melaphyrs (amygdaloids), have been greatly acted upon by water, and have had deposited in their mass different minerals associated with more or less copper. Full text of "Transactions of the American Institute of Mining, Metallurgical, and Petroleum Engineers, Incorporated" See other formats.
The origin and mode of occurrence of the Lake Superior copper-deposits / by M.E. Wadsworth Wadsworth, M. Edward (Marshman Edward), [ Book, Microform: ] View online (access conditions) At National Library.
Issue 25 - 1 / Engels copper deposits, California; Economic geology and allied sciences in Acient times, $ 10 Issue 26 - 3 / Tin Ores of Uncia-Llallagua, Bolivia; Secondary concentration of Lake Superior Iron Ores, $ 10 PP / ORIGIN OF THE COPPER DEPOSITS OF THE DUCKTOWN TYPE IN THE SOUTHERN APPALACHIAN REGION,pb, pages, 44 plates, 5 figs., 1 insert, $ 95 PP / Palache, C.
/ THE MINERALS OF FRANKLIN AND STERLING HILL, SUSSEX COUNTY, NEW JERSEY, reprint of original, afb, pages, 19 plates, figs., 1 insert, $ Chapter 9 DIAGENESIS I N SEDIMENTARY MINERAL DEPOSITS1 G.
AMSTUTZ AND L. BUBENICEK Mineralogisch-Petrographisches Institut der Universitat Heidelberg, Heidelberg(Germany) Institut de Recherches de la Sidkrurgie, Station d'Essais, MaiziPress-Metz, Moselle(France) SUMMARY The role of diagenetic processes in the formation of mineral deposits is reviewed and their Cited by: Statistics and Data Analysis in Geology.
Hydrochemical information is used to interpret the origin and mode of ground water occurrence and recharge. The presence of copper deposits below.
The group is host to the large-scale, Shilu hematite-rich Fe-Co-Cu ore district, which has recently been described as a Lake Superior-type banded iron formation (BIF) (Xu et al., (Xu et al. Cobalt is a chemical element with the symbol Co and atomic number Like nickel, cobalt is found in the Earth's crust only in chemically combined form, save for small deposits found in alloys of natural meteoric free element, produced by reductive smelting, is a hard, lustrous, silver-gray : group 9.
Ross, C.S.,() Origin of the copper deposits of the Ducktown type in the Southern Appalachian region:U.S Geological Survey Professional Paper Cleveland Co. ⓘ Hawkins Branch Cassiterite occurrence (Meadow Creek occurrence). For centuries the characteristics of mineral deposits have been studied with two main objectives: to better understand their geometry and nature to enable their efficient exploitation, and to better understand their genesis to aid prediction of the location of additional mineral resources (Agricola, ; Loughlin and Behre, ).The outcomes of these research efforts are currently embedded.
Optimum conditions for development of giant porphyry copper deposits Porphyry Copper Deposit Model porphyry copper deposits generally form in the upper crust (less than 5–km depth) in tectonically active convergent margins and commonly in areas that are elevated and(or) subject to high uplift rates.
MILES Figure D4. The size of the deposits, their grades, and ratios of economic metals are very variable. This is documented in Table 1, which summarizes data on metric tons of resources + production, grades of Ni, Cu, Co, and PGE, tons of contained metal, and value of the ore and of the individual metals at current metal prices for those deposits for which reasonably complete data sets are available.
The Lake Superior iron ores are essentially residual concentrations in place. The outstanding problems of secondary concentration relate to the [Pg 56] structural features which determined the channels through which the oxidizing and leaching waters worked, and to the topographic and climatic conditions which existed at the time the work was done.
VOL. XLVIII. it slows down gradually, and finally it reaches a point of equilibrium which represents a defi- nite ratio between the concentrations of the reacting substances.o%o tt r, X.
P '-- Z 0 i 2 71Vme-omr-FIG. Hypothetical course of the reaction P--S (formation of photosensitive substance) which takes place during dark adaptation of Ciona. The regular change in. The Svecofennian – Ga mafic–ultramafic intrusions occur throughout the Svecofennian of central and southern Finland, but most of the nickel-bearing intrusions occur within the Kotalahti and Vammala nickel belts to the south and east of the Central Finland Granitoid Complex ().Download: Download full-size image Figure Cited by: 5.
DUPEE, J.A. () On Copper Deposits of Keweenaw Point, Lake Superior. Boston Society of Natural History Proceedings, 5, DUSKIN, D.J. & QUIGLEY, T.O. () Shear Zones and Gold Mineralization in the South Half of the Ishpeming Greenstone Belt, Michigan.1.
The fourth voyage may be traced as a journey through Lake Superior, past the pictured rocks on its south side, beyond the copper deposits, westward to where there are prairie meadows, where the Indians grow Indian corn, and where elk and buffalo are found, in fact in the region toward the Mississippi River.
2.The largest and best known deposits are the sulfide-vein deposits of Montana, the native-copper deposits of the Lake Superior region, and the "oxidized" and "porphyry" deposits of the southwestern United States.
At Butte, Montana, the ore-bearing veins occur in granite, the chief copper.