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Sunnyside Mine

*** Open to collecting. ***

General Info

A sulfide and rhodonite mine northeast of Silverton in San Juan County. It produced some of the best pyroxmangite (formerly thought of as rhodonite) material for lapidaries in Colorado. Lake Emma (drained) is located just below the mine area.

Minerals

Click on the image(s) below to see a picture of that mineral from this location.

Fluorite

Gold

Pyroxmangite - Massive pink chunks that used to be known as rhodonite. Usually coated with a black layer, so you have to break the rock to see the pink. Very hard and tough, so it takes a good polish, according to Murphy and Modreski (2002).

Rhodochrosite

Rhodonite - Massive pink chunks that are now known as "pyroxmangite". Usually coated with a black layer, so you have to break the rock to see the pink. See Pyroxmangite listing above.

Sphalerite - Small black crystals associated with rhodochrosite.


Field Trip Reports

Sorry, no trip reports for this location yet.

pics/sunnysidemine1.jpg
Digging at the Sunnyside Mine in San Juan County. Massive pink rhodonite is the main attraction now at this mine.

pics/sunnysidemine2.jpg
Closeup of people digging at the Sunnyside Mine in San Juan County.

pics/sunnysidemine3.jpg
Some of the roads and concrete foundations leftover from the mining days at the Sunnyside Mine.

pics/sunnysidemine4.jpg
Mountain to the southwest of the Sunnyside Mine.

References

  • S. Voynick, 1995, Colorado Rockhounding (ISBN 0-87842-292-7)
  • B. Muntyan (b), 1999, "Rocks & Minerals" (Vol. 74, July/August, pgs. 220-235)
  • J. A. Murphy and P. J. Modreski, 2002, "Rocks & Minerals" (Vol. 77, July/August, pgs. 218-238)
Please see the reference(s) mentioned above for directions
to the site if specific instructions are not given on this page.

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