Sorry, we are a little behind, but here you can find the March club newsletter.
And here you can find the April club newsletter.
Tuesday, April 11, 2017
Silver City Library Display
The display was a BIG HIT! Many patrons of the library expressed that they were sorry to see it leave and also expressed their thanks to our club for providing it! Here are a few photos.
Sunday, February 5, 2017
Sunday, January 8, 2017
Amazing amathyst
Submitted by Dr. John Cunninghan, Professor Emeritus, Western New Mexico University
I received this from an old field camp student. He was told that, "that these huge Brazilian amethyst geodes were formed in hollow logs.
If that is so, peeling away the matrix should be no problem.
Regardless, they are sure spectacular."
Sunday, January 1, 2017
Monday, December 5, 2016
November Field Trip Report
by Club Member Anita Williams
We met as usual in the Visitor Center parking lot on a beautiful fall morning.
Promptly at 8:30 am the vehicle caravan departed heading south towards Lordsburg.
We regrouped at the Pilot station on I-10 fueling up with gas
($.30 cheaper than Silver, but that’s no surprise), coffee and/or
breakfast.
There was some "de-fueling" too although we were told there is a rest stop right in Hachita that could accommodate folks in need.
We were heading for the abandoned Apache Mine in the Apache Hills south of Hachita.
We accessed the mine area after a four mile drive on a dirt road.
The area had numerous tailing piles and some trenches and a few debris filled shafts.
Of course the group gathered their buckets and hammers and scattered across the area in search of rock/ minerals samples.
The following data was taken from an article by Wofgang Elston, Mining Districts of Hildago County, NM, in NMGS, 17th Field Conference.
The Apache mine started production in the 1880’s. Between
1880 and 1929 the mine shipped low-grade malachite in calcite to
smelters in El Paso and Douglas to be used as flux in the smelting
process.
From 1929 on there has been some production and sporatic exploration.
The mineral deposit was formed during the Laramide (late
Cretaceous to early Tertiary age: the time of the uplift of the Rocky
Mountains) and was associated with an igneous intrusion in the Apache
Mountains.
The associated fluids formed what is called a contact metasomatic deposit.
This caused the limestone formation to be altered/replaced by mineralizing solutions.
The alteration produced the massive beds of calcite present at
the mine site, and as a consequence, the beautiful calcite rhombhedrons
scattered all over the area.
Other minerals found on site include malachite, azurite, chrysocolla and possibly turquoise.
After collecting at the mine a few vehicles took off to look for quartz crystals farther down the dirt road. This part of the road was a bit more challenging with a 2 wheel drive and it is not recommended.
We drove through several steep washes over several miles until we were stopped at a wash out.
Fortunately there were nice pieces of quartz and some crystal terminations scattered over the entire area.
So although we did not get to the specific location we were able to collect some nice samples.
In this area, the quartz is weathering out of the limestone so it is scattered on the surface over a large area.
We all loaded up and drove out in mass in case someone had trouble making it over some of the rougher road segments.
Happily we all made it to the pavement without incident. There was a photo stop at the Hachita rest area prior to heading back to town with our treasures.
Tuesday, November 1, 2016
November Beacon and Club Library
Our November newsletter is available for your viewing pleasure. And, be sure to check out our Club Library shown on the right sidebar in About the Club. We have a great assortment of publications available for members to borrow while at club meetings.
Saturday, October 15, 2016
October Field Trip and Pick Nick

From Andy Anderson: "Here are some pictures of our Pick Nick today at our geode claim. There were 25 of us hunting geodes and as always eating."
Gold Panning Program
Thanks to Karen Blisard for supplying this photo taken at the October club meeting. David Rinsch is demonstrating gold panning to the Club.
Monday, October 3, 2016
A True Family Event
What does it take to make a Gem and Mineral Show a True Family Event? Here's a short video clip all about it.
Thursday, September 29, 2016
Saturday, September 10, 2016
Vendor profile - El Chivo Viejo Minerals and Lapidary
Welcome to our newest feature - Vendor Profile. Each month we will video profile one of our 2016 Show vendors.
We chose El Chivo Viejo, owned by Jay and Amy Penn, for our first video profile because of the upcoming Albuquerque Gem and Mineral Club's fall show. Several of our vendors will be present at this show which is actually led by Jay, as the Show Chair. This show is scheduled from September 30 until October 2 at Expo New Mexico in Albuquerque in the Creative Arts building. More information can be found on the show's web site. Perhaps we will see some of you there!
We chose El Chivo Viejo, owned by Jay and Amy Penn, for our first video profile because of the upcoming Albuquerque Gem and Mineral Club's fall show. Several of our vendors will be present at this show which is actually led by Jay, as the Show Chair. This show is scheduled from September 30 until October 2 at Expo New Mexico in Albuquerque in the Creative Arts building. More information can be found on the show's web site. Perhaps we will see some of you there!
Tuesday, September 6, 2016
Vendors are packed up!
Vendor Chair Karen Blisard says " Thanks to all our terrific vendors and members who provided them such awesome support!"
Monday, September 5, 2016
Last day of show!
Today is our last day, so come check out this wonderful show. Open from 10 am until 4 pm.
Saturday, August 27, 2016
Show Field Trips - Important information!
Grant County Rolling Stone 2016 Gem & Mineral Show
FIELD TRIP SCHEDULE
Saturday September 3RD - 1:00PM – GEODE CLAIM This trip will be to the club’s geode claim off of Bear Mountain Road. The road is fine for all vehicles up to the turn off of the claim. At that point High Clearance vehicles are recommended. There has been new ground worked up and will provide all participants with the opportunity to locate whole or partial agate filled geodes also known as Thunder Eggs. Small shovels or digging tools will be helpful and also a bag or bucket to carry home your treasures. Meet in the hall at the entrance of the gym. If you don’t have a High Clearance Vehicle, see if you can catch a ride with someone who does. This trip will last about 2 hours.
Sunday September 4th – 10:00 am – Silver City Range This trip will be to the Silver City Range just south of Bear Mountain. Access through Forest Service Road 862 will take us along the spine of the range. Rocks we will encounter will include ocean deposits with coral and bivalve fossils, sedimentary sandstone rocks and metamorphosed rocks with collectable scarn minerals. The road is a rough one lane so carpooling with high clearance vehicles is advised. Meet in the hall at the entrance of the gym. This trip will last about 2 ½ hours.
Sunday September 4th – 1:00 pm – 49rs Gold Club
This trip will be to the 49rs Pinos Altos claim where we will teach prospecting a creek for a place to mine. We will show different types of equipment in recreational gold mining and show how to use them weather permitting what types of equipment. All gold found will be distributed among the visiting participants. The trip will last between 2 to 3 hours. The claim is located directly off of the paved road and any vehicle can make it there. Meet in the hall at the entrance of the gym.
The Silver City 49rs will have an area for gold panning demonstrations and information about their club at the show. They will be available each day of the show from 10am to 4pm. They will also have some different types of equipment on display.
Monday September 5th – 11:00am – Amethyst
This trip will be up Boston Hill to collect local Amethyst. This will require a 6 tenths of a mile hike up a somewhat steep and rocky trail. There will be several rest stops on the way for those who need it. To get to the colorful crystals some digging will be required. A small shovel, rock hammer and chisel will also be helpful. There are a lot of clear crystals on the surface to collect for those who do not wish to dig.
PLEASE REMEMBER SAFETY FIRST AND GOOD ROCKHOUND ETIQUETTE. BRING LOTS OF WATER AND IF YOU PACK IT IN PACK IT OUT!
Sunday, August 14, 2016
Updated Vendor List for Show
VENDORS 2016
Susan & Doug Abbott, Desert Designs, Silver City, NM, Native American jewelry, Zuni fetishes
Henry & Charlotte Andazola, Silver City, NM, Native American jewelry
Armando Barrera, Custom Rock Cutters, Columbus, NM, Cabs, spheres, eggs, carvings
Fred Bishop, 2 Guys Rocks, Deming, NM, Slabs, quartz, geodes, turquoise, jewelry
Karen Blisard, Radiant Gemstones, Silver City, NM, Jewelry, faceted stones, facet rough
Harry & Carol Bruntz, Uniquely Yours, Horizon City, TX, Rocks, gems, minerals, display stands
Kevin Cook & Sylveen Robinson-Cook, Royal Scepter, Silver City, NM, Books, maps, beads, jewelry
Trina & Jeff Cornell, Trina’s Rock Shop, Deming, NM, Lapidary equipment, rough, slabs
Jack & Marty Crawford, Silver City, NM, Minerals
Dave Douglass, Douglass Minerals, Tucson, AZ, Mineral specimens
Julie Dubosz, Sierra Vista, AZ, wirewrap jewelry
Sue Fischer, Jewelry from Sue, Silver City, NM, Silver and gold jewelry
Marge & Don Gibboney, Paintbrush jewelry, Grand Junction, CO, wire wrap jewelry
Tom Hales, Tom’s Treasures, Deming, NM, Minerals, gemstone rough, jewelry
Sally Hansen, Sally Rocks, Silver City, NM, Jewelry, lapidary
Gene & Sandra Hardgrove, Rock Art, Tucson, AZ, gemstones (facet & cab), jewelry
Allen Hebert, Glenkara, Tucson, AZ, Gems, minerals, jewelry
Therese Higgins, The Jewelry Lady, Silver City, NM, Jewelry, belly belts
Michael Ho, Gemstone Station, Miraloma, CA, Beads, pearls
Bill & Linda Horton, Misty Mountain G&M, Litchfield Park, AZ, Jewelry, gems, minerals, carvings
Gerald Howard & Jim Wines, JNE Lapidary, Dickinson, TX, Petrified wood, knapped items
Bill & Emily Jaeger, Endless Mountain Minerals, Hereford, AZ, Crystals, rough, specimens, jewelry
Bill Jones, Sidewinder Minerals, Aurora, CO, Minerals, fossils
Patsy & Jerry Kastner, Kastner Gems & Supply, Tucson, AZ, Jewelry, lapidary equipt, supplies
Ron Kellner, RK Enterprises, Show Low, AZ, Jewelry, cabs, slabs, specimens
Randy & Sally McCowan, Deming, NM, Arrowheads, turquoise
Kim Muller, Burro Mountain Arts, Tyrone, NM, Silver and gemstone jewelry
Blanca Murguia, BM Jewelry, El Paso, TX, Silver & gemstone jewelry
Ken Newman, DBA Rocks, Deming, NM, Spheres, slabs, thunder eggs
Jose Nunez, Canutillo, TX, Minerals
Park Pang, Lily’s Beads, Tucson, AZ, Beads
Jay & Amy Penn, El Chivo Viejo, Albuquerque, NM, Minerals
David & Ruth Ann Rinsch, Dave’s Enterprises, Tyrone, NM, Rocks, gems
Carmen & Marina Sanchez, Texas Rocks & Minerals, El Paso, TX, minerals, rocks, specimens
John Scully & Laurie Rossi, Scully’s Minerals, Fairview, NM Minerals, fossils
Jesse, James, and Jan Searcy, Black hat Trading, Deming, NM, Jewelry, findings, beads, carvings
Clare Thanhauser, Clare Thanhauser GG, Marietta, GA, Rough rock, gemstones, jewelry
Virginia Wilkinson, Buckhorn, NM, Jewelry and rocks
Bruce Williams & Nancy Bailey, Silver & Stone Works, Silver City, NM, Jewelry, cabs, chain maille
Susan & Doug Abbott, Desert Designs, Silver City, NM, Native American jewelry, Zuni fetishes
Henry & Charlotte Andazola, Silver City, NM, Native American jewelry
Armando Barrera, Custom Rock Cutters, Columbus, NM, Cabs, spheres, eggs, carvings
Fred Bishop, 2 Guys Rocks, Deming, NM, Slabs, quartz, geodes, turquoise, jewelry
Karen Blisard, Radiant Gemstones, Silver City, NM, Jewelry, faceted stones, facet rough
Harry & Carol Bruntz, Uniquely Yours, Horizon City, TX, Rocks, gems, minerals, display stands
Kevin Cook & Sylveen Robinson-Cook, Royal Scepter, Silver City, NM, Books, maps, beads, jewelry
Trina & Jeff Cornell, Trina’s Rock Shop, Deming, NM, Lapidary equipment, rough, slabs
Jack & Marty Crawford, Silver City, NM, Minerals
Dave Douglass, Douglass Minerals, Tucson, AZ, Mineral specimens
Julie Dubosz, Sierra Vista, AZ, wirewrap jewelry
Sue Fischer, Jewelry from Sue, Silver City, NM, Silver and gold jewelry
Marge & Don Gibboney, Paintbrush jewelry, Grand Junction, CO, wire wrap jewelry
Tom Hales, Tom’s Treasures, Deming, NM, Minerals, gemstone rough, jewelry
Sally Hansen, Sally Rocks, Silver City, NM, Jewelry, lapidary
Gene & Sandra Hardgrove, Rock Art, Tucson, AZ, gemstones (facet & cab), jewelry
Allen Hebert, Glenkara, Tucson, AZ, Gems, minerals, jewelry
Therese Higgins, The Jewelry Lady, Silver City, NM, Jewelry, belly belts
Michael Ho, Gemstone Station, Miraloma, CA, Beads, pearls
Bill & Linda Horton, Misty Mountain G&M, Litchfield Park, AZ, Jewelry, gems, minerals, carvings
Gerald Howard & Jim Wines, JNE Lapidary, Dickinson, TX, Petrified wood, knapped items
Bill & Emily Jaeger, Endless Mountain Minerals, Hereford, AZ, Crystals, rough, specimens, jewelry
Bill Jones, Sidewinder Minerals, Aurora, CO, Minerals, fossils
Patsy & Jerry Kastner, Kastner Gems & Supply, Tucson, AZ, Jewelry, lapidary equipt, supplies
Ron Kellner, RK Enterprises, Show Low, AZ, Jewelry, cabs, slabs, specimens
Randy & Sally McCowan, Deming, NM, Arrowheads, turquoise
Kim Muller, Burro Mountain Arts, Tyrone, NM, Silver and gemstone jewelry
Blanca Murguia, BM Jewelry, El Paso, TX, Silver & gemstone jewelry
Ken Newman, DBA Rocks, Deming, NM, Spheres, slabs, thunder eggs
Jose Nunez, Canutillo, TX, Minerals
Park Pang, Lily’s Beads, Tucson, AZ, Beads
Jay & Amy Penn, El Chivo Viejo, Albuquerque, NM, Minerals
David & Ruth Ann Rinsch, Dave’s Enterprises, Tyrone, NM, Rocks, gems
Carmen & Marina Sanchez, Texas Rocks & Minerals, El Paso, TX, minerals, rocks, specimens
John Scully & Laurie Rossi, Scully’s Minerals, Fairview, NM Minerals, fossils
Jesse, James, and Jan Searcy, Black hat Trading, Deming, NM, Jewelry, findings, beads, carvings
Clare Thanhauser, Clare Thanhauser GG, Marietta, GA, Rough rock, gemstones, jewelry
Virginia Wilkinson, Buckhorn, NM, Jewelry and rocks
Bruce Williams & Nancy Bailey, Silver & Stone Works, Silver City, NM, Jewelry, cabs, chain maille
Tuesday, August 9, 2016
Monday, July 25, 2016
Current and past Gem and Mineral Show Information
Here's is a summary of all of our Gem & Mineral Show posts.
Sunday, July 24, 2016
Not long until our Show!!!
Grant County Rolling Stones Gem and Mineral Society will hold their 33rd Annual Gem & Mineral Show at Western New Mexico University’s Intramural Gym, College Ave , Silver City, New Mexico – on Saturday September 3rd -9am -5pm – Sunday September 4th – 10am – 5pm and Monday – September 5th – 10am – 4pm. Free Admission – A great family event ! Large assortment of vendors, Wheel of Fortune, Silent Auction, Daily Field trips for Collecting & for Geology and Mining History - Educational Displays.
July Field Trip
Submitted by Jeannine Weiner
We went on a trip to Kingston to hunt crystal Scepters. As a side
attraction we stopped at the North Percha Saloon. This is located on a
forest road between Kingston & Hillsboro about 7 miles north of Hwy
152.
Sunday, July 10, 2016
Thursday, June 30, 2016
June Field Trip Report
Hot! Hot! Hot! Sound like a mid-June field trip in SW New Mexico? Yes is the correct answer in case you had any doubts. First I have to add a comment on last month's trip to the Grandview Mine. I did find a reference to gold production at the mine after I sent in the report. So I just wanted to set the record straight that some gold was produced from the Grandview in its later years of production.
The June field trip started out with the usual sign-in at the Visitor Center. A good number of participants turned out for the trip. We all drove out Hwy 180 to the Gila turnoff, drove thru Gila and continued on to the Turkey Creek road. This area is the Gila Fluorspar mining district which consisted of three mines, the Foster, Clum and Victoria. The mines produced from the early 1880's (Foster) through the late 1940's. The ore was used primarily as a flux in smelting of metal ores. At first it was shipped to Silver City and then during the war efforts it was shipped via truck and rail to processing plants in Deming and Lordsburg until 1943. The government contracted a mill to be built in Gila at that time. Most of the ore was then sent to a steel mill in Pueblo, CO. The Clum mine had a brief resurrection in the 1970's with its ore being used to produce hydrofluoric acid. All the mines are currently abandoned.
Fluorite or fluorspar is calcium fluoride, CaF2. It crystalizes in isometric forms commonly occurring as cubes and octahedrons. It also breaks along very distinct cleavage planes. Colors are commonly clear, purple, blue, green with yellow and pink from some locations. It is used as a flux in smelting metals; in the manufacture of hydrofloric acid; in the manufacture of glass and enamel; and in jewelry.
The fluorite veins in the Gila district were deposited along faults and fractures through volcanic latites from the Mogollon volcanic period. The faulting and mineralization occurred during the development of the Barsin Caldera between 28 to 17 million years ago.
Our first mine stop, the Foster, was not far from the road. We all hiked in and started scouring the tailings finding lots of pieces of fluorite glittering in the sunlight. Most were clear, but some were a faint green/blue. Down the hill a little was there was a cut through the rock which lead to a blocked off adit. HIgh angle veins of fluorite cut thru the bedrock, latite, here and with some arm-strong hammering and prying some nice samples of green and purple banded fluorite were collected. There was plenty to share with the rest of the group. A few samples with nice cubic crystals were also found in the area.
Everyone toted their treasures back to the vehicles and we were off to the next location. The road was not bad for a dirt road but a bit of a challenge in places for a sedan-type vehicle. The second stop was touted as a drive-right-to-the-mine site, but most of us opted to park up top and hike down to the the site which wasn't too far. Again the tailing piles were aglitter with fluorite pieces. Some folks had great spots that they excavated with great abandon plucking up nice fluorite samples. Others choose to work on breaking down some boulders with fluorite veins running thru them. Again some nice samples of green with some purple were collected. In this area there were some nice, albeit small, samples with octahedral crystal clusters. Most of these were purple with some clear. All had a great time hammering boulders into small rocks in the quest for a beautiful sample.
We then continued on the road stopping at one point for Ansel to out another fluorite mine. It was an uphill hike and we were all hot and uninterested in exploring the location. We continued up, over and down, down, down the road into the Gila River valley. The scenery was stunning coming down into the valley. At the intersection of the dry creek bed we stopped and hiked to a hot springs. Something about a hot springs in 100° weather that wasn't too appealing. We all tested the water temperature water and decided to find the Gila River for lunch and a wade in the cool water. It was a fine end to yet another fun field trip.
Tuesday, May 31, 2016
May Field Trip Report to Grandview Mine
May Field Trip Report
Our field trip for May was a collecting trip to the Grandview Mine up in the Mimbres/Black Range Mountains. We headed east on 180 from our gathering point at Walmart, turned onto 152 at Bayard and to continued east the Hwy 61 junction where we turned south for several miles. South of San Juan we turned onto Royal John Mine road crossed the Mimbres and started gaining altitude. We remained on Royal John Mine until we entered the National Forest where we turned left onto Silver Gulch road. Silver Gulch was a slow-go, mostly one lane, bumpy, dirt road. It took us farther up the mountains and through some beautiful back country and into the pines. After about a 2 hour drive we reached an old, log prospectors cabin and stopped to look around. There was another cabin a bit farther down the road in better condition that we also visited. Finally we reached the end of the road and the Grandview mine dumps.
The Grandview, appropriately named by the way, was actually discovered in the early 1900's, but had no recorded production until 1933. Although it has been called a gold mine, the only production records I could find listed the ores as lead, zinc and copper. The primary ore minerals were sphalerite, chalcopyrite, helvite and galena. The gangue minerals included calcite, fluorite, garnet, epidote, pyrite, and quartz.
The actual mine was an underground adit with about 1000' of drift. The ore was hosted in a late Ordovician limestone cut by the north striking Grandview fault. The mineralizing fluids replaced the limestone along the fractured fault zone and created the ore body. From the production 1933 to 1951 production records, the ore was 3.71% lead, 9.4% zinc, and .22% copper.
Our trip was focused on collecting some of the nice pyrite crystals located all around the tailing piles. So everyone spread out along the road and/or down the hill with buckets and hammers in hand in quest of the shiny mineral. Pyrite is iron disulfate, also called fool's gold, and is a very common mineral. It is brassy yellow and commonly forms cubes often with striations on one side. It is also brittle and breaks unevenly. It didn't take long for the collecting to begin. The tailing piles were glittering with pyrite sparkling in the sunshine. The largest pieces I saw were maybe an inch on a side, but the nicest crystals were smaller and could be found loose on the tailings or as clusters in the waste rock. Other minerals found included clear fluorite, sphalerite and some epidote.
By afternoon folks began the trek down the bumpy road down the mountain with buckets full of mineral treasures. It was another beautiful day in the mountains and a fun rockhounding trip.
Our field trip for May was a collecting trip to the Grandview Mine up in the Mimbres/Black Range Mountains. We headed east on 180 from our gathering point at Walmart, turned onto 152 at Bayard and to continued east the Hwy 61 junction where we turned south for several miles. South of San Juan we turned onto Royal John Mine road crossed the Mimbres and started gaining altitude. We remained on Royal John Mine until we entered the National Forest where we turned left onto Silver Gulch road. Silver Gulch was a slow-go, mostly one lane, bumpy, dirt road. It took us farther up the mountains and through some beautiful back country and into the pines. After about a 2 hour drive we reached an old, log prospectors cabin and stopped to look around. There was another cabin a bit farther down the road in better condition that we also visited. Finally we reached the end of the road and the Grandview mine dumps.
The Grandview, appropriately named by the way, was actually discovered in the early 1900's, but had no recorded production until 1933. Although it has been called a gold mine, the only production records I could find listed the ores as lead, zinc and copper. The primary ore minerals were sphalerite, chalcopyrite, helvite and galena. The gangue minerals included calcite, fluorite, garnet, epidote, pyrite, and quartz.
The actual mine was an underground adit with about 1000' of drift. The ore was hosted in a late Ordovician limestone cut by the north striking Grandview fault. The mineralizing fluids replaced the limestone along the fractured fault zone and created the ore body. From the production 1933 to 1951 production records, the ore was 3.71% lead, 9.4% zinc, and .22% copper.
Our trip was focused on collecting some of the nice pyrite crystals located all around the tailing piles. So everyone spread out along the road and/or down the hill with buckets and hammers in hand in quest of the shiny mineral. Pyrite is iron disulfate, also called fool's gold, and is a very common mineral. It is brassy yellow and commonly forms cubes often with striations on one side. It is also brittle and breaks unevenly. It didn't take long for the collecting to begin. The tailing piles were glittering with pyrite sparkling in the sunshine. The largest pieces I saw were maybe an inch on a side, but the nicest crystals were smaller and could be found loose on the tailings or as clusters in the waste rock. Other minerals found included clear fluorite, sphalerite and some epidote.
By afternoon folks began the trek down the bumpy road down the mountain with buckets full of mineral treasures. It was another beautiful day in the mountains and a fun rockhounding trip.
Saturday, April 30, 2016
May Newsletter
Be sure to check out our May Beacon which is chock-full of information! It contains updated information about our Gem and Mineral Show, as always, scheduled for Labor Day Weekend. There is also a great article about the upcoming Club field trip on May 21. Every Rock Hound should check out the Field Trip Safety Checklist included in this issue.
Thursday, March 31, 2016
Tuesday, March 8, 2016
February Field trip to the Bootheel
Submitted by Club VP - Anita Williams
(Click to enlarge images)
The Club February field trip met up at the Visitor Center and then headed out down to Lordsburg. From there we headed due south and drove thru the Animas Valley down to the boot heel and the Coronado National Forest.
The collecting locations are in the Guadalupe Mountains which are composed of Tertiary aged volcanoclastics and sediments within the Geronimo Trail Caldera. The volcanics are very silica rich and produced abundant rhyolites, chalcedony and quartz.
The first stop was in Clanton Canyon just inside the Forest boundary. We parked and walked south scouting the hill and the stream bed. This whole area was the scene of active volcanic and hot spring activity. We found some great metamorphic rocks some with small garnets, lots of chalcedony and some great yard rocks.
The next stop was further up the canyon and up a side road to a place called Black Dam. This area is host to more chalcedony and chalcedony filled geodes. The area east of the parking area and down a gully produced a lot of nice geodes which were already opened. Lots of material may produce geodes, but they have to be cut. I did not take the time to explore much more of the site, but there is likely a very large area where the geodes, some of them quite nice, can be found.
(Click to enlarge images)
The Club February field trip met up at the Visitor Center and then headed out down to Lordsburg. From there we headed due south and drove thru the Animas Valley down to the boot heel and the Coronado National Forest.
The collecting locations are in the Guadalupe Mountains which are composed of Tertiary aged volcanoclastics and sediments within the Geronimo Trail Caldera. The volcanics are very silica rich and produced abundant rhyolites, chalcedony and quartz.
The first stop was in Clanton Canyon just inside the Forest boundary. We parked and walked south scouting the hill and the stream bed. This whole area was the scene of active volcanic and hot spring activity. We found some great metamorphic rocks some with small garnets, lots of chalcedony and some great yard rocks.
The next stop was further up the canyon and up a side road to a place called Black Dam. This area is host to more chalcedony and chalcedony filled geodes. The area east of the parking area and down a gully produced a lot of nice geodes which were already opened. Lots of material may produce geodes, but they have to be cut. I did not take the time to explore much more of the site, but there is likely a very large area where the geodes, some of them quite nice, can be found.
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