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Show 4 INTER-MOUNTAI- N outside the boundary lines, and they will be on the ground to take immediate possession. It is well known that a powerful syndicate is exerting its utmost efforts to secure control of these asphaltum lands, and they seem to be aided and abetted by Government officials. It is the duty of the people of Utah to closely watch developments and to frustrate every attempt of foreign capitalists to rob them of their rights and privileges. The reservations should have been thrown open long ago, as directed by the law, but until they are thrown open there should be no favoritism, no special privileges for Eastern invalids with a pull. These lands do not belong to Hoke Smith, nor to the acting Indian agent, but when the Indians have relinquished their rights they will belong to the public, and equal rights must be accorded all people to prospect for minerals and to locate lands. A New York subscriber, who says he contemplates seme mining investments, wants to know whether the Mining Review publishes the unprejudiced facts concerning the gold mines in your vicinity. The Review begs to assure this reader, and all others in the East, that it publishes the unprejudiced facts concerning the gold mines in this vicinity, and the silver mines and all other mines, here and elsewhere. It is not published in the interest of any stock-jobbin- g or wildcat promotion scheme, and unprejudiced facts are its specialty. And in this connection it regrets to note the appearance of and existence of a few d mining journals at various centers, that have appaself-style- MINING REVIEW. Hilling and Metallurgical Patents. List of patents relating to mining, issued March 24, 1890. Reported for the Mining Review by J. F. Corker, patent Solicitor, office No. 311 and 312 Atlas block, Salt Lake City, Utah. Copies furnished for 25 cents each. No. 556,750. Roasting furnace. J. B. F. Herreshoff, Brooklyn, N. Y. A roasting apparatus, consisting of one or more roasting floors, combined with a vertical main shaft running through the floors, the said shaft having a plurality of hubs, each hub provided with inwardly projecting lips, side wings, and with an overhanging entered into flange, of a stirrer-arstirrer-areach hub, each having pins also providor teeth, said stirrer-arm-s ed with an upwardly projecting toe, and with laterally-projectin- g pins, all so when the that parts are arranged on rest the lips, assembled the pins will and the toe will enter between the so that one or more of the teeth flange, stirrer-arms are nearer the cenon the ter of the shaft than the pins, and the stirrer will be in position to stir material placed upon the roasting floor. No. 556,779. Gold separating machine. J. II. Shufelt, Dolores, N. M. A gold separating machine, comprisa hoping a casing, having a fan-boto said casing, legs seper secured cured to the casing, and a leg hinged to the upper end of the hopper, an apron supported to the upper end of fan-bo- x below the discharge openthe in the hopper, a removablefan-bo-sanding box at the lower end of the and a hinged screen across the upper end of the hopper. No. 556,854. Conductor for electrical decomposing tanks. John Leith, St. Helens, England. The system of electrolytic installaa series of tanks tion, comprising for the electrolyte, divided into positive and negative cells arranged alternately, and comprising conductors leading to and from the generator, the wires from wThich conductors are severally connected to the anodes and the cathodes of the first and last tanks, respectively, of the series, and the cathodes of the first tank being coupled to the anodes of the second tank, and the cathodes of the second tank to the anodes of the third tank, and so on throughout the series. m m x, x, rently been brought forth for the sole purpose of levying tribute upon mining promoters; whose columns are at all times for sale, and which for a very small sum will devote entire editions to the booming of any fake Mercur and the Mining Review. scheme. Such publications cast discredThe Mining Investor, a high-clait upon the mining industry, because, journal of wide circulation, published although without local influence or at Colorado Springs, extends this genstanding, they are used as the instru- erous recognition to Utah and the Minments of deception. They are boodlers, ing Review: The gold and silver fields pure and simple, and in no sense rep- of the Rocky Mountain States are too resent the mining interests. extensive for any one journal to attempt to cover the entire ground with The Mining Review publishes this justice. The Investor is obliged from week an abstract of the United States the nature of the case to confine its Geological Surveys report on the Camp information largely to the State of Floyd district. The report is too volu- Colorado, although we take a lively Inminous to be of interest or practical terest in our neighbors from British benefit to the general public, hence all Columbia to Mexico and Colorado to the important conclusions and deter- California, and believe that this entire minations have been condensed and enormous area is of the careful are presented in readable shape. The consideration of worthy capital. Although the Review has of late devoted considera- camp of Cripple Creek and the State of ble space to Camp Floyd geology, such Colorado have the call at present, and attention being demanded not only by are absorbing most of the attention of the wide distribution of investments in the public, there are other camps in the district, but also by the widespread other States that are, from recent debelief that there were presented here velopments, worthy of particular nogeological and mineralogical conditions tice. In this connection we would reheretofore unknown. Many theories fer particularly to the Mercur camp in have been advanced, some plausible Utah, wrhich, although perhaps not as and others seemingly and well known as some of our Colorado ridiculous, and a great confusion of camps at present, is bound to attract ideas has ensued. It is to be hoped an increasing interest. Covering, as It does, the field for Colorado, the Inthat from the various and conflicting vestor takes in recommending views presented by the professional to its readers pleasure Minthe geologists the practical miner will be ing Review, published at Salt Lake able to glean some suggestions that City, for information about Mercur and camps in Utah; it also will aid him in his search for the ore other mining attempts to cover the adjoining States bodies. of Idaho and Nevada. ss far-fetch- ed Inter-Mounta- in Camp Floyd Geology. AND DEDUCTIONS FROM JAMES E. SPURRS REPORT ON THE GOLD LEDGE OF MERCUR BASIN. EXTRACTS PREPARED BY MAYNARD B1XBY. In the following article I endeavor to give a series of extracts and deductions from the report made on the Mercur district for the United States Geological Survey from an examination made during 1894 by Mr. James E. Spurr. As the silver belt is not worked, these extracts refer to the gold vein now being worked and the geology connected with it. At the time of Mr. Spurrs examinations comparatively little development had been accomplished on the gold belt to the south of the Mercur mine; consequently the report deals mainly with the Mercur basin and conditions immediately surrounding it, though he regards the Mer- y cur and Sunshine ores as mineralogi-calland genetically closely related, and, I infer, found under similar geological conditions. GEOLOGY OF THE GOLD BELT. In the Mercur basin there are exposed, within a distance The author says: of five or six miles, sedimentary beds to a thickness of about 12,000 feet. The structure of the rocks of the Mercur basin is simply that of one limb of an anticlinal fold, the beginning of the other limb being in the southwest corner, as seen near the mouth of Lewiston canyon. Lithologically this conformable series may be divided into (1) the lower blue limestone, which occupies the bottom of the canyon, and of which there are exposed under the arch of the fold about 200 feet; (2) the lower intercalated series, consisting of interbedded limestones and calcareous sandstones, having a thickness of about 600 feet; (3) above this a very thick blue limestone, which has been designated the Great Blue limestone, and which has a thickness of about 5000 feet. This limestone holds the beds of shale which furnish the water supplied for the district and is also note- worthy for containing in its lower portions the ore horizons. Above the Great Blue limestone comes (4) the upper intercalated series, consisting of interbedded limestones and sandstones, like the lower series, but on a larger scale. Measured to the top of the ridge which is the margin of the basin, this series shows a thickness of 5000 to feet. There is thus exposed in the Mercur basin a total thickness of nearly 12,000 feet of strata. 6000 DIP OF THE STRATA. In this (Lewiston) canyon, about a mile and a half southwest of Mercur, the rocks change from their usual northeast dip and become horizontal, then pass into gently southwesterly dipping strata Going southwest the dip gradually steepens, but within a few miles the rocks pass under the pleistocene formation of the plain. At this point they dip 15 or 20 degrees west. Going northeast up the canyon from the axis of the anticline, the dip gradually steepens again, and at the town of Mercur it averages about 20 |