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Mine Descriptions

Cave Hill deposit (Onyx Cave)

On several claims in the Greaterville district efforts have recently been made to develop “onyx” deposits, but it is thought that the deposits are too calcaeous to be of commercial value. Recently the Onyx Mining Co. is said to have developed here a large deposit of chalcedony2.

Alternate Names

None

Mining District and Mines

Greaterville District

Location

20S. 15E. SW¼ 15

Mineral Products

Onyx marble (travertine).5

Geology

Relatively small deposit of partially massive, brownish travertine in a solution cave in faulted Permian limestone.5

Type of Operation and Production

Very minor operations in the early 1910's extracted a few blocks5.

 

References

  1. Mineral Appraisal of Coronado National Forest, Part 12, Santa Rita Mountains Unit, MLA11-94 (1994). SR 591-609
    http://repository.azgs.az.gov/sites/default/files/dlio/files/nid1813/usbm_mla_011-94.pdf
  2. Mining in the Santa Rita and Patagonia Mountains of Arizona, F. C. Schrader, U.S. Department of Interior, 1915. Republished 2014 by Kerby Jackson.
  3. Mike Bertram,
  4. USGS Mineral Resources Data System - using WGS84 (https://mrdata.usgs.gov/mrds/map-commodity.html#home)
  5. Index of Mining Properties in Santa Cruz County by Stanton B. Keith, bulletin 1991, Arizona Geological Survey, 1975