Dear Mr. Nyhan,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located 11 file units relating to gold in the Records of the U.S. Bureau of Mines, 1860-1995 (Record Group 70). For access to these file units, please contact the National Archives at College Park - Textual Reference (RDT2) via email at firstname.lastname@example.org.
We suggest that you review the U.S. Geological Survey publication Placer Gold Deposits of New Mexico; Gold Statistics and Information; Colorado Mining District (New Mexico Territory); and New Mexico for additional research information.
Also, you may wish to search New Mexico Bureau of Geology and Mineral Resources; and New Mexico.gov - Welcome to the Land of Enchantment for more resources.
We hope this is helpful. Best of luck with your research!