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About us...

MGMC LogoFounded in 1990, MGMC is a non-profit organization.  Our mission is to promote earth science through educational articles, classes, field trips, shows, and workshops.  Contact us:
  • Email:  mgmc@sti.net
  • Phone:  209-966-4367
  • U.S. Mail:  MGMC, P.O. Box 753, Mariposa, CA 95338

Affiliations:


CFMS LogoRegional:  CFMS

AFMS LogoNational:   AFMS


Meetings: 

  • General Meeting (Public Welcome)  - Monthly, 2nd Sunday, 4:30 P.M., Mariposa Fairgrounds, Gem and Mineral Exhibition Building, Highway 49 South, approximately 1.8 miles south of town.
  • Board Meeting (Members Only) - Monthly, last Monday, 3:00 P.M. MGMC Quarry

Dues:

  • Yearly - $15.00 Singles;  $30.00 Couples;  $35.00 Families

Store:

  • Located downtown Mariposa, 4994 7th Street, Phone:  209-966-4367, Open: Monday through Saturday, 10:00 A.M. to 4:00 P.M., staffed by volunteers.  Must see sales items include:  collector specimens of rocks, minerals, fossils; handmade jewelry; soap stone carvings; belt buckles; pendants; variety of silversmith collectibles; handmade dichroic glass.


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