What people are saying - Write a review
We haven't found any reviews in the usual places.
Other editions - View all
amount average Boulder built camp carrying cent Chaffee City claims Clear Creek Colorado concentrates considerable contains continued copper County Denver deposits Director discovered discovery district Eagle early east erected extensive feet figures formed furnace Geol Gilpin given gives gold gold and silver Gulch Gunnison Hill includes increased iron known Lake lead Leadville located lode metals Mexico miles mill Mineral Mineral Resources mines Mountain named opened operated ounces Ouray output oxide Park Pass Peak Pitkin placer plant Plata pounds present principal production pyrite quantity quartz Railroad range region reports rich River rock running Saguache San Juan San Miguel says Secs shaft shipments shipped short shows silver smelter smelting South Springs stamp mills sulphide Summit surface Survey taken tons town treated tunnel United Valley vein yielded zinc
Page 64 - Mining claims upon veins or lodes of quartz or other rock in place bearing gold, silver, cinnabar, lead, tin, copper, or other valuable deposits, heretofore located, shall be governed as to length along the vein or lode by the customs, regulations, and laws in force at the date of their location.
Page 64 - May, eighteen hundred and seventy-two, whether located by one or more persons, may equal, but shall not exceed, one thousand five hundred feet in length along the vein or lode; but no location of a mining claim shall be made until the discovery of the vein or lode within the limits of the claim located. No claim shall extend more than three hundred feet on each side of the middle of the vein at the surface, nor shall any claim be limited by any mining regulation to less than twenty-five feet on each...
Page 156 - Report of the Director of the Mint upon the Production of the Precious Metals in the United States during the Calendar Year, 1905.
Page 37 - Remarks on the changes which take place in the structure and composition of mineral veins near the surface, with particular reference to the East Tennessee Copper Mines.
Page 64 - In length along the vein or lode ; but no location of a mining claim shall be made until the discovery of the vein or lode COST.MIN.LI. (539) within the limits of the claim located.
Page 246 - LA.FORGE, LAURENCE, and PHALEN, WC, US Geol. Survey Geol. Atlas, Ellijay folio (No. 187), 1913. The Ellijay quadrangle includes the southern part of the Ducktown district, and the rocks and types of geologic structure are similar. The text of the folio includes a discussion of the stratigraphy of the region.
Page 64 - ... at the date of their location. A mining claim located after the tenth day of May, eighteen hundred and seventy-two, whether located by one or more persons, may equal, but shall not exceed, one thousand five hundred feet in length along the vein or lode but no location of a mining claim shall be made until the discovery of the vein or lode within the limits of the claim located. No claim...
Page 41 - Beneath the gossan is found a bed or mass of black cupriferous ore of variable thickness and width. This, as well as the gossan, is the result of the decomposition of an ore consisting originally of a mixture of the sulphurets of iron and copper which was associated with a quartzose gangue or vein stone.
Page 202 - Mill made i short run in the summer, but was unsuccessful. The Saint Lawrence Mill has been transported to Georgetown and sold to the Pelican Company. The operations of the Boston Silver Company, at Saint John's, have been steadily prosecuted during the season. The company continued to drive its long tunnel into Glacier Mountain until, on the 20th of November, it had reached a length of 1,075 feet. It is well constructed throughout, being 7 feet wide by 9 feet high, and in all places, where the rock...
Page 118 - ... needed by the Malta Works as a flux. The ore in the western branches of the two splits is decidedly softer than that in the eastern ones, but so far it has not shown any such rich pockets as the eastern upper branch between the line and the main, shaft. The eastern lower branch between the line and the lower shaft has so far not been developed. At the lowest depth, just before the rich pyrites was struck, the contents of the ore in gold were very small. At the same time it must be remarked that...