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Zustand: very good. from the preface, "Global demand for mineral resources will continue to increase for the foreseeable future because of the continuing increase in global population and the desire to improve living standards worldwide." softcover, 11" x 8.5", 13 pages.

Soft cover. Zustand: Good. ORIGINAL 1986 PUBLICATION; softcover; ex-library; spine reinforced with tape; o/w in good condition. Book.

Paperback. Zustand: Very Good. First Edition. Unmarked. ; Book Description; Spine has staples. Pages are clean and not marred by notes or folds. Covers are square with wear as noted. Ships Safe and Fast. Data on grades, tonnages, and geology of selected Tertiary epithermal precious- and base-metal vein districts associated with volcanic rocks were tabulated for ease of examination and comparison of characteristics between districts. There are 215 districts listed, with a cumulative tonnage of 709 million metric tons and average grades of 4.7 g/t Au, 224 g/t Ag, 0.16 percent Cu, 0.55 percent Pb, and 0.83 percent Zn, representing about 60 percent of world districts.; U. S. Geological Survey Bulletin; Vol. 1666; B&W Illustrations; 9.69 X 7.44 X 0.10 inches; 39 pages; 1287015018 DU4.

Softcover. Zustand: Fine. Stapled, printed brown wrappers; a compilation of some 21 coal towns & coaling stations, with brief descriptions; page 8 references. ; 8vo 8" - 9" tall; 8 pages.

Zustand: New. KlappentextChromite ((Mg, Fe++)(Cr, Al, Fe+++)2O4) is the only source for the metallic element chromium, which is used in the metallurgical, chemical, and refractory industries. Podiform chromite deposits are small magmatic chromite bodi.

Paperback. Zustand: Good.