Bulletin of the American Institute of Mining Engineers Nos. 31-36
Bulletin of the American Institute of Mining Engineers Nos. 31-36
American Institute of Mining Engineers
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appearance and nature — namely, ocberous clay-like materials carrying disseminated nodules and masses of brown ores; and (4) the common analysis, showing low silica and high alumina, with notable quantities of chromium and much combined water. The map, Fig. 8, shows the general features of the Moa de- posit. The ore-bed occupies practically the entire area adja- cent to the shore, and extends thence inland for a distance of from 3 to 5 miles, finally fingering out along the crests of the divide...s. Wherever the ore comes to an end laterally, and where it has been cut through by streams, serpentine is found as the country-rock. A number of samples of this serpentine were taken, of which an average analysis is given in Table 11., together with a reconstructed complete analysis of the ore. Table II. — Analyses of Country-Rock and Iron-Ore^ Moa Bay^ Cuba. Serpen liDe. Per Cent. Fe,03 FeO . SiO^ . AlA TiO, GrA NiO PA . MnO CaO . MgO K,0 . Na,0 H,0. Iron-Ore. Per Cent, 66.90 8.55 37.29 1.33 0.28« 0.07 trace.
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