The Hazel Copper-Silver Mine, Culberson County, Texas. Digital Download

RI0016D. The Hazel Copper-Silver Mine, Culberson County, Texas, by P. T. Flawn. 23 p., 4 figs., 7 pls., 1952. doi.org/10.23867/RI0016D. Downloadable PDF

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Excerpted from the Introduction
The Hazel mine is one of the oldest mines in Texas and has been the largest copper-producing property in the State. The mine has a recorded production of over 1 million pounds of copper and over ½ million ounces of silver, and there are a number of years in which the mine was active but for which no figures are available. True production is in the neighborhood of 4 to 5 million ounces of silver and 1½ million pounds of copper.


The Hazel mine is the most important of a group of mines and prospects known as the Allamoore—Van Horn copper district. This district lies within Culberson and Hudspeth counties in an area of pre-Cambrian rocks exposed between the scarp of the Sierra Diablo to the north and Beach and Baylor Mountains to the southeast and east. The district is bounded on the east and west by the approximate longitudes of Van Horn and Allamoore. The altitude is about 4,500 to 5,000 feet, climate is arid or semi-arid (generally less than 10 inches rain per year), and mining operations can be conducted all year. Water is obtained from wells or mine seeps. Vegetation is of a
desert type and consists of various cacti, yucca, and thorny shrubs without suitable mine timber.


Keywords: Culberson County, Hudspeth County, Hazel mine, mines, Texas, copper, silver

CONTENTS
Introduction
      Location
      Previous work
      Present work
History and production
Workings
     East shaft
     Inclined shaft
     West shaft
Geology
     General geologic relations
     Hazel fracture zone
Mineralization
     The ore
     Localization of ore
     Wall rock alteration
     Sequence of mineralization
     Age of the mineralization
Gravimetric data
Ore reserves
Inventory of the property
Recommendations for exploration
Bibliography

FIGURES
1. Index map of the Hazel mine area, Culberson County, Texas

2. Gravitational force map of Hazel mine

3. Gravitational force map of Marvin-Judson prospect

4. Diagram of gravity anomaly caused by leached zone

PLATES
I. Geologic and topographic map of the Hazel mine

II. Vertical sections and level plans of the Hazel mine in 1891 (after Von Streeruwitz)

III. Map (after World Exploration Company) showing underground workings in Hazel mine

IV. Generalized composite map of the Hazel mine (after World Exploration Company and Sample and Gould)

V. Assay map of the Hazel mine (after World Exploration Company)

VI. Geologic map of the Hazel mine area

VII. Photographs of the Hazel mine in 1891 and 1951

TABLE
1. Recorded production from the Hazel mine area


Citation
Flawn, P. T., 1952, The Hazel Copper-Silver Mine, Culberson County, Texas: The University of Texas at Austin, Bureau of Economic Geology, Report of Investigations No, 16, 23 p. doi.org/10.23867/RI0016D.