Upcoming Field Trips

July 26–29, 2018  – Davis Creek & Lassen Creek – sponsored by Contra Costa Mineral & Gem Society


Weather and other conditions permitting, SDMG often sponsors one or more field trips per month.  Some of the field trips are day or half-day trips; although, some field trips are overnighters.  Overnight trips require members to have their own camping equipment.  In some cases motels are available, but they are usually quite a distance from the dig site.

Many of the field trips are in rugged areas and members should have the basic equipment for an excursion into the California back country, including:

  • Sturdy, comfortable clothing and boots for hiking.
  • Warm clothing in case it gets cold.
  • A good hat.
  • Lots of water.
  • Sunscreen.
  • Knee pads, safety glasses or goggles, and gloves.
  • Meals and a camping stove (for overnighters), or good snacks for day trips.
  • A good flashlight, knife, and whistle.
  • A basic medkit is nice with bandaids and such.  Home Depot has nice small ones for only a few dollars.
  • Garbage bags/plastic bags for packing out trash.
  • Basic digging equipment: rock hammer, pry bar, shovel, pick axe, hand-held sledge hammer, chisels, plus lots of buckets for hauling your treasure home!

Learn how to finish those Fire Agates you've prospected for at Opal Hill Mine; read an excerpt from L.D. Hughes' book »

Read about the discovery of the Hauser Geode Beds by Barbara Kimball Hauser

Learn more about the Opal Hill Fire Agate Mine »

Still more on Fire Agates in "Quest For Fire At Opal Hill Mine," by Dusty Rhoads, available online at

Past trips have included outings to the following California destinations:

  • Searles Lake (near Trona): Hanksite, Pink Halite.
  • Wiley Well (near Blythe): Fire Agate, Geodes.
  • Himalaya mine tailings (near Julian): Tourmaline; Lepidolite.
  • Afton Canyon (near Barstow): White Marble, Red and Yellow Agate, Lava, Fluorite.
  • Stoddard Wells: Verde Antique, Tri-colored Marble, Black Jade.


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