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Black Hawk District (Bullard's Peak District), Big Burro Mts, Grant Co., New Mexico, USA

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The ore deposits of the Black Hawk District are examples of a well defined type known as “5 element ores” because they contain Ag, Co, Ni, As and Bi. As is typically the case the Black Hawk ores are fissure vein fillings with the metallic minerals contained in a carbonate gangue. This type of ore deposit is uncommon but examples are widely scattered, especially in Europe and North America. The best known 5 element ore deposits are those of Cobalt-Gowganda and Port Radium in Canada and Jachymov, Czech Republic.

Some, but not all, examples of 5 element ore deposits have an early carbonate-pitchblende stage. At least some of the veins in the Black Hawk District were uranium bearing. Because of this and because the similar deposits at Port Radium and Jachymov were important at the dawn of the atomic age, the Black Hawk District was investigated in the early 1950's during the uranium rush of that era (Gillerman and Whitebread, 1956) .

Mineral List

Mineral list contains entries from the region specified including sub-localities


105 entries listed. 59 valid minerals.

Localities in this Region


The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Gillerman, E. (1952), Fluorspar deposits of Burro Mountains and vicinity New Mexico, USGS Bulletin 973-F.

Gillerman, Elliot; Whitebread, D.H., 1956, Uranium-bearing nickel-cobalt native silver deposits, Black Hawk district, Grant County, New Mexico: Bulletin 1009-K, p. 283-313

Kissin,SA (1992) Five-element (Ni-Co-As-Ag-Bi) veins. Geoscience Canada 19, 113-124.

Von Bargen, D. (1993), Minerals of the Black Hawk District, New Mexico. Rocks & Minerals: 68: 96-111, 132-133.

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