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Carl L. Forn

Publications and source records attributed to Carl L. Forn.

5 recordsLinked to original sources

Geochemical maps showing distribution and abundance of bismuth and beryllium in the nonmagnetic fraction of stream-sediment concentrates, Silver City 1 degree by 2 degrees Quadrangle, New Mexico and Arizona

These maps (Maps A and B) show the distribution and abundance of bismuth and beryllium in the nonmagnetic fraction of heavy-mineral concentrates from stream sediments collected in the Silver City 1 o x 2 o quadrangle, New Mexico and Arizona. Geochemical maps showing the distribution and abundance of nine other selected key elements and the mineral flourite in the Silver City quadrangle are also part of this folio (Watts and Hassemer, 1980; Watts and others 1986a-i). These maps contribute to the assessment of mineral resources within Silver City 1 o x 2 o quadrangle by (1) showing regional patterns of elements enriched in heavy-mineral concentrates, thereby providing clues to regional patterns of mineralization; (2) showing new areas containing enriched metals, not previously known from mining activity; and (3) providing supportive data to the interpretive and summary maps (Watts and Hassmer, 1986) and the mineral resource assessment (Richter and others, 1983). Background information that pertains to published components of the Silver City Folio is also available (Richter and others, in press).

Arizona, New Mexico↗

Geochemical maps showing distribution and abundance of tin in two fractions of stream-sediment concentrates, Silver City 1 degree by 2 degrees Quadrangle, New Mexico and Arizona

These maps (Maps A and B) show the distribution and abundance tin in the nonmagnetic and magnetic fractions of heavy-mineral concentrates from stream sediments collected in the Silver City 1 o x 2 o quadrangle, New Mexico and Arizona. Geochemical maps showing the distribution and abundance of 10 other selected key elements and the mineral fluorite in the Silver City quadrangle are also part of this folio (Watts and Hassemer, 1980; Watts and others 1986a-i). These maps contribute to the assessment of mineral resources within Silver City 1 o x 2 o quadrangle by (1) showing regional patterns of elements enriched in heavy-mineral concentrates, thereby providing clues to regional patterns of mineralization; (2) showing new areas containing enriched metals, not previously known from mining activity; and (3) providing supportive data to the interpretive and summary maps (Watts and Hassmer, 1986) and the mineral resource assessment (Richter and others, 1983). Background information that pertains to published components of the Silver City Folio is also available (Richter and others, in press).

Arizona, New Mexico↗

Geochemical maps showing distribution and abundance of manganese in two fractions of stream-sediment concentrates, Silver City 1 degree by 2 degrees Quadrangle, New Mexico and Arizona

These maps (Maps A and B) show the distribution and abundance of maganese in the nonmagnetic and magnetic fractions of heavy-mineral concentrates from stream sediments collected in the Silver City 1 o x 2 o quadrangle, New Mexico and Arizona. Geochemical maps showing the distribution and abundance of 10 other selected key elements and the mineral fluorite in the Silver City quadrangle are also part of this folio (Watts and Hassemer, 1980; Watts and others 1986a-i). These maps contribute to the assessment of mineral resources within Silver City 1 o x 2 o quadrangle by (1) showing regional patterns of elements enriched in heavy-mineral concentrates, thereby providing clues to regional patterns of mineralization; (2) showing new areas containing enriched metals, not previously known from mining activity; and (3) providing supportive data to the interpretive and summary maps (Watts and Hassmer, 1986) and the mineral resource assessment (Richter and others, 1983). Background information that pertains to published components of the Silver City Folio is also available (Richter and others, in press).

Arizona, New Mexico↗

Geochemical maps showing distribution and abundance of barium in two fractions of stream-sediment concentrates, Silver City 1 degree by 2 degrees Quadrangle, New Mexico and Arizona

These maps (Maps A and B) show the distribution and abundance barium in the nonmagnetic and magnetic fractions of heavy-mineral concentrates from stream sediments collected in the Silver City 1 o x 2 o quadrangle, New Mexico and Arizona. Geochemical maps showing the distribution and abundance of 10 other selected key elements and the mineral fluorite in the Silver City quadrangle are also part of this folio (Watts and Hassemer, 1980; Watts and others 1986a-i). These maps contribute to the assessment of mineral resources within Silver City 1 o x 2 o quadrangle by (1) showing regional patterns of elements enriched in heavy-mineral concentrates, thereby providing clues to regional patterns of mineralization; (2) showing new areas containing enriched metals, not previously known from mining activity; and (3) providing supportive data to the interpretive and summary maps (Watts and Hassmer, 1986) and the mineral resource assessment (Richter and others, 1983). Background information that pertains to published components of the Silver City Folio is also available (Richter and others, in press).

Arizona, New Mexico↗

Geochemical maps of the Southern Massanutten Roadless Area, Page and Rockingham counties, Virginia

The U.S. Geological Survey (USGS) made a reconnaissance geochemical survey of the Southern Massanutten Roadless Area to test for indistinct or unexposed mineral deposits that might be recognized by their geochemical halos. Sixty-two stream-sediment and 52 rock samples were collected from within and near the study area by Lesure, assisted by J. H. DeYoung, Jr. (USGS) and A. E. Grosz (USGS) in October 1979. All samples were analyzed for 31 elements by means of semiquantitative emission spectrographic methods by Forn in USGS laboratories, Denver, COlo. (table 1). The samples were also analyzed for zinc by means of an atomic absorption method by B. F. Arbogast, USGS laboratories, Denver, Colo.

Virginia↗