This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1912 Excerpt: ...silica and low lime of the walls. In brief, it appears that the ore forms best in pure or magnesian limestone and that the walls are siliceous. Two other geologic features that appear to play important parts in determining the distribution and position of ore bodies--fissures and intrusives--are considered under ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1912 Excerpt: ...silica and low lime of the walls. In brief, it appears that the ore forms best in pure or magnesian limestone and that the walls are siliceous. Two other geologic features that appear to play important parts in determining the distribution and position of ore bodies--fissures and intrusives--are considered under separate heads. FORM AND STRUCTURE. In general, the form of tho bedded deposits is roughly lenticular, modified in various ways. Some have the length along the strike greatly extended; much more commonly the dimension along the dip is greater. The margins are as a rule irregularly lobed, some of the lobes or arms being of considerable length. Tho periphery is normally attenuated until it disappears. Normally these deposits occur in single or simple lenses, but some of them become compounded through the duplication of the original by others above and below. The dimensions of the lenses differ greatly. The thickness ranges from a few inches up to 6 or even 9 or 10 feet. The maximum dimension is usually the length along the strike, which in some lenses is approximately 500 feot and in one or two is indicated by mine maps as 600 to 800 feet. The width in the direction of dip averages possibly 50 feet, reaching 100 feet in several lenses, 150 feet in the great stope at the west end of the Daly West property on the 900-foot level, and about 200 feet through a length of 600 feet in the great stope in the Silver King mine. These features of form and dimensions were well shown in the stopes at the north end of the 750-foot level in the Silver King mine and thenco down to tho 800 and 900 foot levels. In the Daly West tho stopes tributary to tho 900-foot level west and those connected with the sublevels above, notably the extensive C stope, afforded much valua...
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New. Trade paperback (US). Glued binding. 312 p. In Stock. 100% Money Back Guarantee. Brand New, Perfect Condition, allow 4-14 business days for standard shipping. To Alaska, Hawaii, U.S. protectorate, P.O. box, and APO/FPO addresses allow 4-28 business days for Standard shipping. No expedited shipping. All orders placed with expedited shipping will be cancelled. Over 3, 000, 000 happy customers.
Add this copy of Geology and Ore Deposits of the Park City District, to cart. $25.78, new condition, Sold by BargainBookStores rated 3.0 out of 5 stars, ships from Grand Rapids, MI, UNITED STATES, published 2022 by Legare Street Press.
Add this copy of Geology And Ore Deposits Of The Park City District, to cart. $30.01, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
