Colorado Mineral Society Field Trips

Upcoming CMS Field Trips:

Event Name Event Date
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2023 CMS Field Trips List:




May 13, 2023

Calumet Mine – Epidote

Salida, CO

May 20, 2023

CU Boulder Map Repository (Joint trip with Flatirons Club)

Golden, CO

May 27, 2023

Two Creeks – Barite

Northeastern CO

June 3, 2023

Hartsel – Barite – Juniors Only 

Hartsel, CO

June 4, 2023

Hartsel - Barite (Adults and Families) - Postponed Hartsel. CO

June 10, 2023

Flat Tops - Goethite psuedomorphs after Pyrite -Postponed

Dotsero, CO

June 17, 2023

Harris Park Claim – Smoky quartz, amazonite


June 23, 2023 (#1)

Smoky Hawk or Sky Hawk - Amazonite

Lake George, CO

June 24, 2023

Tarryall Topaz Claim (Fee)

Lake George, CO

July 9, 2023

Butterfield Ranch – Adults Only (Fee)


July 9, 2023

Butterfield Ranch – Juniors Only (Fee)


July 22, 2023 (#2)

Smoky Hawk or Sky Hawk - Amazonite

Lake George, CO

August 5, 2023 Flat Tops - Goethite psuedomorphs after Pyrite Dotsero, CO

August 5, 2023

Smoky Hawk - Juniors Only

Lake George, CO

August 12, 2023

Houselog Creek


August 13, 2023
Hartsel - Barite (Adults and Families)
Hartsel, CO

August 26, 2023

Magnetite Site

Lake George, CO

Sept 1-4, 2023

Thomas Range - Topaz, Red Beryl, Garnite, Nephi Palm Wood      

Delta, Utah

Sept 15-18, 2023

Denver Gem and Mineral Show

Denver, CO

Sept 30-Oct 1, 2023

Fairburn Agates

Crawford, NE

October 7, 2023

Botryoidal Fluorite Trip

Canon City, CO

October 15, 2023

Baculite Mesa

Pueblo, CO

October 21, 2023

North Table Mountain (Joint trip with Flatirons Club) 

Golden, CO

October 21, 2023

Book Cliffs - Barite

Grand Junction, CO


Note:  The field trips will be posted on the CMS fieldtrip website throughout the summer and automated email notifications will go out when new trips are added. 

Yellow highlighted trips are for junior rockhounds and their families.

Italics trips are tentative.

CMS Field Trip Rules

  • You can sign up online for a field trip. Reconfirm that you will be attending shortly before the trip date. This is good manners as well as good sense!  Trip leaders have the right to      refuse attendance for those not signed up and are not obligated to wait for unconfirmed participants.
  • Some trips are restricted with the number of people that can participate.  If you sign up and then cannot attend, please remove your name off the online sign-up page or notify the trip leader as soon as possible to release the spot being reserved for you.
  • On the day of the trip at the meeting location, the field trip leader will collect the Release and Waiver Liability Form for Field Trips that must be signed by all attendees.  Claim owners and landowners may have additional liability forms that need to be filled out and signed.
  • When you leave the field trip site, be sure to check with the trip leader so they know you and your group are accounted for.
  • You are responsible for the behavior and actions of your guests and minor children. Note that all guests and minor children must be members of CMS to attend club field trips unless we are conducting joint trips with other clubs.
  • At a few locations (for example old mine sites, operating quarries), safety issues or regulations may prevent minor children from attending the trip. Such restrictions will be noted in the trip write-ups.
  • If you dig holes looking for minerals or fossils, please fill it in the holes when you are done.  This is a requirements on all Federal Lands, as well as private lands.
  • Dogs or other pets are not allowed on any field trip.  Please do not leave your dogs in your vehicles during the field trip.
  • Respect private property of all kinds!  Do not disturb or remove claim markers.  Don’t trespass in areas adjacent to the field trip site. Ask permission if you must gain access to private land.

American Federation of Mineralogical Societies "Code of Ethics"

  • I will respect both private and public property and will do no collecting on privately owned land without permission from the owner.
  • I will keep informed on all laws, regulations or rules governing collecting on public lands and will observe them.
  • I will, to the best of my ability, ascertain the boundary lines of property on which I plan to collect.
  • I will use no firearms or blasting material in collecting areas.
  • I will cause no willful damage to property of any kind such as fences, signs, buildings, etc.
  • I will leave all gates as found.
  • I will build fires only in designated or safe places and will be certain they are completely extinguished before leaving the area.
  • I will discard no burning material - matches, cigarettes, etc.
  • I will fill all excavation holes which may be dangerous to livestock.
  • I will not contaminate wells, creeks, or other water supplies.
  • I will cause no willful damage to collecting material and will take home only what I can reasonably use.
  • I will practice conservation and undertake to utilize fully and well the materials I have collected and will recycle my surplus for the pleasure and benefit of others.
  • I will support the rockhound project H.E.L.P. (Help Eliminate Litter Please) and will leave all collecting areas devoid of litter, regardless of how found.
  • I will cooperate with field-trip leaders and those in designated authority in all collecting areas.
  • I will report to my club or federation officers, Bureau of Land Management or other authorities, any deposit of petrified wood or other materials on public lands which should be protected for the enjoyment of future generations for public educational and scientific purposes.
  • I will appreciate and protect our heritage of natural resources.
  • I will observe the "Golden Rule", will use Good Outdoor Manners and will at all times conduct myself in a manner which will add to the stature and Public Image of Rockhounds everywhere.