Geological investigations and geochemical prospecting experiment at Johnson, Arizona

Cooper, John Roberts; Huff, L.C.

doi:10.2113/gsecongeo.46.7.731

Cited by 5 publications

(6 citation statements)

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“…An account entitled "Coronado's Republic mine" appeared in the Mining World for August 1946 and gives the background and many details of recent mining and milling operations. Other reports include a summary of the results of an explora-tory drilling project on the Keystone and St. George properties by the U.S. Bureau of mines (Romslo, 1949), a preliminary summary of the geology of the district (Cooper, 1950), a description of a geochemical prospecting experiment (Cooper and Huff, 1951), and discussions of the localization of the ores (Arthur Baker, 1953) and metamorphism of the carbonate rockf-' (Cooper, 1957). Blake (1898Blake ( , 1899 reported the discovery of tungsten in quartz veins near Russellville and gave a brief description of the occurrence.…”

Section: Pr•evlous Workmentioning

confidence: 99%

Geology and ore deposits of the Dragoon quadrangle, Cochise County, Arizona

Cooper¹,

Silver²

1964

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107

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Thrust plate of breccia derived from the Age and correlation_____________________ 87 Escabrosa and Black Prince limestones__ 118 Galiuro volcanics___________________________ 87 Thrust faults with lower Precambrian rocks Stratigraphy___________________________ 126 General features________________________________ 96 Structural features affecting the older alluvium_ 127 Pre-Apache deformation~________________________ 97 Development of the topography______________________ 127 Johnny Lyon Hills__________________________ 97 Origin of the principal features___________________ 127 Little Dragoon Mountains___________________ 101 Landslides in the Winchester Mountains and Steele Late Precambrian deformation___________________ 102 Hills________________________________________ 130 Post-Paleozoic-pre-Cretaceous deformations________ 103 Igneous metamorphism of the carbonate rocks__________ 131 Late Cretaceous or early Tertiary deformation_____ 104 Mineral deposits____________________________________ 133 Dragoon Mountains_________________________ 104 Generalfeatures________________________________ 133 Little Dragoon Mountains___________________ 105 History of mining_______________________________ 134 Zone of thrusts southeast of the Texas Copper and zinc.:.___________________________

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Section: Pr•evlous Workmentioning

confidence: 99%

Geology and ore deposits of the Dragoon quadrangle, Cochise County, Arizona

Cooper¹,

Silver²

1964

Professional Paper

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107

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“…Leakage halos have also been mapped by analyzing soil or vegetation over the geochemical anomaly in the immediately underlying bedrock. Kennedy (1956) and Cooper and Huff (1951) mapped soil anomalies that corresponded with observed leakage halos in the bedrock. White and Alien (1954) found a copper anomaly in glacial soil 75 feet above the top of a blind ore body in the Boundary district of British Columbia.…”

Section: Ohip Samples Of Rock Collected At Close Intervals Across Oumentioning

confidence: 99%

“…If the composition is spotty and erratic, . however, it is safer to collect either channel samples or chip samples composited along sections of traverse as described by Cooper and Huff (1951). Split diamond-drill core is also suitable.…”

Section: Sampling Techniquesmentioning

confidence: 99%

Principles of geochemical prospecting

Hawkes¹

1957

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“…Dispersion patterns of this kind might conveniently be referred to as "wall-rock" halos. Another type of primary halo consists of a pattern of hydrothermally dispersed metals in the rock overlying deposits that do not crop out at the surface (Lovering, Sokoloff and Morris, 1948;Riddell, 1950;Cooper and Huff, 1951). Primary halos are basically three dimensional features, even though they appear as two dimensional patterns on surface plans.…”

Section: Primary Anomaliesmentioning

confidence: 99%

Geochemical prospecting investigations in the Nyeba lead-zinc district, Nigeria

Hawkes¹

1954

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A field study of the distribution of traces of lead and zinc in weathering products, particularly residual and alluvial soils, was made in the Nyeba lead-zinc district, southern Nigeria. Similar geochemical work in temperate climates has shown that systematic sampling and trace analysis of residual soils and other weathering products hold considerable promise as a method of mineral exploration. The purpose of the present investigation was to learn whether geochemical methods of prospecting would apply equally well in a tropical environment.The program consisted principally of detailed studies of the distribution of lead and zinc in residual and alluvial cover over known lead-zinc lodes, followed by experimental reconnaissance sampling surveys to determine the feasibility of large-scale geochemical prospecting work. A chemical kit was shipped to the field area and used for obtaining prompt analytical data to assist in guiding the sampling program.As a result of these experiments, it is concluded that the metal content of small, near-surface samples of residual soil collected at a spacing of 100 feet would be adequate to show the location of the important lead-zinc lodes of the Nyeba district, and that the metal content of deeper samples of alluvial soil collected at a spacing not greater than the width of the lode would indicate the presence of sulfides beneath alluvial cover.An all-African crew was trained to do all but a minor part of the routine work of sample collection and analysis.

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Geological investigations and geochemical prospecting experiment at Johnson, Arizona

Cited by 5 publications

References 0 publications

Geology and ore deposits of the Dragoon quadrangle, Cochise County, Arizona

Geology and ore deposits of the Dragoon quadrangle, Cochise County, Arizona

Principles of geochemical prospecting

Geochemical prospecting investigations in the Nyeba lead-zinc district, Nigeria

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