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Geology and Resources of ·vanadium

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VIII BIBLIOGRAPHY OF VANADIUM GEOLOGY<br />

INDEX EXPLANATION<br />

Each bibliographic reference is indexed under one or more index<br />

sets, each set consisting <strong>of</strong> three orders <strong>of</strong> headings. Topical <strong>and</strong><br />

geographic terms are used for these headings. AH references relating<br />

to vanadium accumulations that might be <strong>of</strong> economic interest are<br />

indexed both topically <strong>and</strong> geographically; references to occurrences<br />

dominantly <strong>of</strong> scientific interest are judged to have no geographic<br />

significance <strong>and</strong> are inde"\.ed only under topical headings.<br />

References to productive vanadium deposits, <strong>and</strong> also to nonproductive<br />

occurrences <strong>of</strong> the same geologic types as the productive<br />

deposits, are all indexed under the first-order heading, "Deposits,<br />

geologic types." Second-order headings indicate the geologic types,<br />

such as "Asphaltite" <strong>and</strong> "S<strong>and</strong>stone." Third-order headings relate<br />

to the geographic location. Also included under "Deposits, geologic<br />

types" are nonproductive types <strong>of</strong> occurrences that are judged to have<br />

a significant productive potential, such as vanadium-rich shale <strong>and</strong><br />

tar s<strong>and</strong>s.<br />

All references indexed under uDeposits, geologic types" are also<br />

indexed under first-order geographic names, consisting <strong>of</strong> States in the<br />

United States, foreign countries, <strong>and</strong> major geographic units, such as<br />

the Colorado Plateau region. "The Statesman's Yearbook," 1965-<br />

1966, 102d edition, New York, St. Martin's Press, 1726 p., 1965, was<br />

used as an authority for the names <strong>of</strong> new countries; former names <strong>of</strong><br />

countries are cross-referenced to the new names. Second-order headings<br />

consist <strong>of</strong> political <strong>and</strong> geographic subdivisions. Third-order headings<br />

identify the geologic types <strong>of</strong> deposits.<br />

All references that include tonnage <strong>and</strong> grade data on the vanadium<br />

content <strong>of</strong> deposits or areas are also indexed under the first-order<br />

headings H<strong>Resources</strong>, geographic distribution" <strong>and</strong> "<strong>Resources</strong>,<br />

geologic types <strong>of</strong> deposits."<br />

References that relate mainly to the geochemical abundance <strong>and</strong><br />

association <strong>of</strong> vanadium <strong>and</strong> to geochemical processes involving<br />

vanadium are mainly inde"ed under the first-order heading, ''Geochemistry,"<br />

<strong>and</strong> those relating to studies <strong>of</strong> vanadium minerals are<br />

indexed under the first-order headings "Mineral data" <strong>and</strong> "Mineralogy."<br />

Most <strong>of</strong> these references are not considered to be significant<br />

geographically, <strong>and</strong> for that reason most <strong>of</strong> them are not indexed<br />

under first-order geographic terms.<br />

LIST OF VANADIUM MINERALS<br />

Most formulas <strong>and</strong> classifications are from Hey (1962, 1963, 1966);<br />

some are modified by Michael Fleischer, U.S. Geological Survey<br />

(written commun., 1965, 1968). Minerals that are generally not accepted<br />

or incompletely described <strong>and</strong> synonyms that are generally<br />

discarded are shown in italics.

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