Saint David area, Cochise Co., Arizona, USA
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|Latitude & Longitude (WGS84):||31° 54' 15'' North , 110° 12' 49'' West|
|Latitude & Longitude (decimal):||31.9041666667, -110.213611111|
Subsequent erosion cut through layers of soil, exposing the various deposition levels.
Soil saturation of rainwater and subsequent evaporation allowed deposition of gypsum in many forms. Opal also formed in the same way above impervious layers of caliche or clays.
Quartz, magnetite, garnet, iron and other minerals are found in the outflow washes. Some of the opal and silica pods are slightly radioactive from the marginally commercial deposits in the Whetstone Mountains.
Mindat ArticlesPseudomorph Crystal Discovery by Rolf Luetcke
Saint David Gypsum Collecting by Rolf Luetcke
16 entries listed. 11 valid minerals.
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.
Mitchell (2001), Gem Trails of Arizona.