Sunday, July 25, 2021

AFMS & RMFMS ANNUAL SHOW AND CONVENTION, BIG PINEY, WYOMING, JUNE 2021: PART THREE

 


                Last year (2020) in the middle of the pandemic the Rocky Mountain Federation of Mineralogical Societies (RMFMS) was forced to scramble after their scheduled meeting location closed shop due to state regulations.  Other regional Federations faced the same big questions and decisions loomed—cancel the meetings, postpone the meetings, or find new locations (in a hurry).  In an amazingly short period of time the Sublette County Rockhounds (Wyoming), with Jim and Leane Grey at the rudder, invited RMFMS to Big Piney in the western part of the state for the convention and show.  I guess the local rockhounds figured that the wide-open spaces would not allow the COVID 19 critters to congregate.  By all accounts the events were well attended and participants came away “happy.”  Hosts of the 2020 American Federation of Mineralogical Societies (AFMS) also needed to back out so a ZOOM meeting was held although a quorum was not reached, and official business could not be conducted.

But back to Wyoming.  The first thing that most RMFMS members needed to ask themselves was “Where in the world is Big Piney, Wyoming?”  It turns out that, as a local cowboy told me in the café, in a fast pickup and no big animals on the road, we can make it to Jackson in an hour and a half, a little less time if you are ill.  Jackson is 92 miles northwest of Big Piney.

Move forward a year and decision time was again at the table and host cities were backing out, mostly due to state rules and regulations.  Guess what?  Along came the Sublette County Rockhounds (with Jim and Leane still at the helm) with an offer to host the 2021 RMFMS show and convention, and oh by the way, you might as well throw in the AFMS hoopla.  The more the merrier.  Well, the Federations could not turn down an offer like that so here we come.

Although I could not attend in 2020, I made early plans to haul my travel trailer over the mountains and across the plains to Big Piney (I knew Bill Smith from Kansas would do the same).  I actually had been to the area before—in the summer of 1969 I worked for Texaco out of Casper and another geologist and I drove over to “check out the rocks.”  I remember little else about the town.  In addition, I came close several other times since fieldwork on my doctoral dissertation extended to north of Kemmerer (the town is 70 miles south of Big Piney) almost to Big Piney.

So off we went from Colorado Springs traversing the interstate from Hades (construction on I-35 from the Springs to north of Fort Collins) jerking a 38-foot 5th wheel.  Wow.  Overnight in a campground in Cheyenne, a second cup of coffee in Laramie, and we were off to the races on I-80 along with several thousand 18-wheelers that were heading to the west coast. Unfortunately, as the journey resumed west to Rock Springs another  construction project, 18 miles of rough single lane with the trucks, was far from enjoyable.  Crossing the Green River at Green River, Wyoming, reminded me of one of my heroes, John Wesley Powell, who disembarked at that point in 1869 on his epic journey to, and through, the Grand Canyon.


Stamp published in 1969 by the U.S. Postal Service to commemorate Powell’s first journey down the Green and Colorado Rivers.


Citadel Rock butte, Green River Wyoming, 1868. Albumen print by Andrew J. Russell showing construction of a railroad bridge across the Green River.  The area is the Type Locality of the famous (fossilized fish and oil shale reserves) Green River Formation (mostly Eocene in age) and all rocks in the print are of the Formation.  The Butte is still an impressive site along I-80.  The photo is Public Domain and from the Library of Congress's Prints and Photographs division under the digital ID ppmsca.03147.

Finally, near the town of Green River we left the I-80 and headed north through some country where you could actually enjoy the rocks and landscape without fearing for your life traveling with the trucks.  On the two-lane without traffic, I tried to imagine what it was like for fur trappers who were heading north in the early 1800s to the big rendezvous on the Green River.


Annual rendezvous of Rocky Mountain trappers.
Original sketch in Oregon Trail Museum. Public Domain photo courtesy of U.S National Park Service and Scott’s Bluff National Monument.

Finally, there it was---Big Piney, much like I remembered---without a single pine tree, big or small.  I had to stop and ask a local about the fairgrounds, home of the show and convention.  Little did I know that one had to proceed through both Marbleton and Big Piney to locate the mass of fairground buildings.  An amazing setup for what must be a large county fair.


The Sublette Country Fair: Join us July 28-31, 2021! Photo courtesy of Joan Mitchell at the “Hog Show.”

Unfortunately, Marbleton and Big Piney (within a half mile of each other) have suffered like many other small rural towns---businesses have pulled up stakes and moved on.  What they left behind was one small eating establishment.  Fortunately, this café served some of the best Mexican style food in Wyoming.  Another business that survived is Jim and Leane’s rock shop in Marbleton---what a pleasant surprise and enjoyment.  Be certain to stop in if  you are in the area.


The eatin’ place in Big Piney.  Photo courtesy of Frank Tank.

The number of campsites at the fairground is quite large as I suppose the cowpokes attending the fair events need hookups for their horse trailers/sleepers.  The RVs were simply backed up to a barbwire (bobwire in the vernacular) fence and were awakened by “mooing” cattle in the morning.


There may not be Pine Trees in Big Piney; however, the sunsets are spectacular over the sagebrush steppe.  The RV was backed up to the bobwire fence.

Although the fairgrounds did not have a permanent eating establishment, two or three food trucks served the show visitors.  And speaking of visitors, I was amazed at the number of people of all ages who trekked across the country to visit the rocks and minerals.  I talked to one family who made a 100-mile (one way) trip to see the show---"heck, not far atall for some entertainment.”  Reminds me of my early hometown in Kansas.

Since this was both a RMFMS and AFMS get together I attended a number (well, actually there were just a few) of Federation meetings.  I will leave explanations and results of these meetings to the officers.  I headed for Colorado after the Sunday morning breakfast and awards presentations for writing and newsletters. I must say that CSMS came out a big winner in both RMFMS and AFMS contests.  Our local Society has a fantastic Pick & Pack editor in John Emery.  The following awards were presented to CSMS members:

American Federation of Mineralogical Societies (AFMS)

New Newsletter Editors

John Emery; 2nd Place: CSMS Pick & Pack

Junior Poetry

Josilyn Teague; 1st Place: The Crystal

Karah Teague; 3rd Place: Oh Colorado Mountains

Adult Article-Advanced

Mike Nelson; 2nd Place: Playing with Minerals and Surviving the Pandemic

Rocky Mountain Federation of Mineralogical Societies (RMFMS)

Photo Collage

John Emery; 1st Place: CSMS FIELD TRIP | ROCKY MOUNTAIN HIGH CLAIMS 1 & 2

Junior Poetry

 Karah Teague; 1st Place: Oh Colorado Mountains

Josilyn Teague; 2nd Place: The Crystal

New Newsletter Editor

John Emery; 2nd Place; CSMS Pick & Pack

Junior Articles

Jonathan Hair; 4th Place: Impact Gold

Adult Articles Advanced

Mike Nelson; 4th Place: Chasin' the Blues with Elwood, Jake, Bob, Kevin, Jerry & Bill

Mike Nelson; 2nd Place: Playing with Minerals and Surviving the Pandemic

Steven Veatch; 5th Place: Windy Point: A Photographic Essay


Since Big Piney is close to the fossil fish digs near Kemmerer several dealers had many nice Eocene specimens for sale.


The Wyoming State Gemstone is jade of the variety nephrite, a calcium magnesium silicate varying in composition from actinolite to tremolite (an amphibole).  Most Wyoming jade is some sort of green but blue, brown, black and white specimens are rare.


Fossil Butte National Monument is not far from Big Piney and the Ranger staff offered a nice display and explanation.





The local club excelled in offering opportunities for the younger rockhounds.


Flintknappers always draw an audience.


The Silent Auction is always popular.

During the shows and meetings, I kept gazing east across the sagebrush and the valley of the Green River to the Wind River Mountains.  This section of Wyoming has fascinated me since kiddom as I read a voluminous number of books and articles on the early fur trappers and their rendezvous along this section of the Green.  As a geologist I was always interested in the large number of mountain glaciers still present on the flanks of the peaks.  The Winds have the largest number of glaciers still alive in the lower 48 and Gannett Peak has the largest of these remaining glaciers.  As a result, the glacial topography presents a textbook study that beginning students can easily understand—horns, arêtes, cirques, etc. carved into the Precambrian granite.  Although there are no 14ers in the Winds, Gannett Peak at 13,809 is the highest point in the state of Wyoming.  Coming in second at 13,775 is the much better-known Grand Teton.  After that the next highest 19 Wyoming peaks are all located in the Winds.  It is truly a magnificent mountain range; unfortunately, I have explored very little of the topography (spending my time always wandering around Utah and Colorado).

Although I came to Big Piney for the meetings, deep down in my heart I came to see the headwaters lakes of the Green River! This particular area in the Winds has been on my bucket list for over a half century!  I had been close before but no bingo.  This time I was going to check it out, and so I did.

From Big Piney one travels north to Cora and east towards Pinedale before turning north on WY 352 for about 50 miles.  Approximately half is paved, and half is washboard bumpy gravel, but all is scenic as one follows the Green River to its source, a lake backed up behind a glacial moraine with a magnificent mountain called Squaretop Mountains (11,695 feet) at the far end.  WOW, what a view.  So inspiring. There are several small lakes in the source valley that are fed by glacier meltwater; however, the lake “at the end of the road” is usually referred to as the source of the Green.  BTW, there is a nifty little sandwich shop in Daniel on the way to the lake—take advantage, your last, before starting the 50-mile stretch.


Squaretop and the lake.

 

 


The far upper reaches of the fast-moving Green River below the source lakes.


Thirty miles below the source lakes the Green River meanders along in a wide valley.

So, it finally happened and was made so much better by the company of two friends from Salt Lake City (the dinosaur ladies) and my spouse.  Another checkoff on the list.  How many more bucket list spots can I make that check mark?  Don’t know. 

A different route was selected for the trip back home—different rocks and landscapes for an ole geologist to peek at. I wanted to see again the sagebrush steppe of the vast Wyoming Basin (actually composed of a number of smaller basins).  I had camped before on the Big Sandy River near the southern end of the Winds while on a field trip looking for fossils in Eocene rocks.  In addition, the area along the Big Sandy has the largest herd of migrating pronghorns in the U.S. (I only observed small groups or individuals).

At Rock Springs it was back to truck infested I-80 until WY789/CO13 turned south towards Craig, Colorado, and our campground along the Yampa River.  Decades ago, in my oil finding days, I had been through Baggs, Wyoming, on the state line.  If anything, this small oil community has, shall I say, gone downhill.  It was not a pleasant experience when, on this traveling Sunday, I blew the sidewall out of one of the 5th wheel tires.  No indeed, not a pleasant experience; however, I got it changed and limped down to Craig and I-80, camped, and steered her home to Colorado Springs.  Yes, I stopped at several locations, but no one wanted to sell me a tire with installation—too busy today.


A group of partial and full scalenohedron crystals of calcite.  Width FOV ~2.0 cm.


A gemmy scalenohedron calcite crystal. Length of crystal ~1.0 cm.

 

Calcite crystals that may be hematite included and some may have phantoms.  Width FOV ~1.0 cm.

Although I enjoyed the show and vendors associated with the convention, I purchased very few specimens—nothing I really needed.  I did mange to bring home a number of hand size specimens mostly coved with scalenohedron crystals of calcite---really nice well-formed crystals.  The collecting location is a little fuzzy!  They were advertised as coming from Mexico.  In asking a more definitive location the two young sellers stated specimens were collected by their grandfather; in Santa Eulalia they thought.  Now the Santa Eulalia Mining is a very large mining district in Chihuahua with many mines; therefore, I am to further pinpoint the collecting locality.  I plan on giving these specimens to my kiddie (and a few adults) rockhound friends.  

So, the 2021 RMFMS and AFMS events are now history—at least in my mind.  A big thanks to Jim & Leane, the Sublette rockhounds, Prez Judy and the Central Office (Cheryl) from AmFed,  and Prez Bob, VP Sheri, Sec. Wayne, and my good friend Tres. Gene, who makes it all run, from RMFMS.


Thursday, July 8, 2021

BROOKSELLA & AGATES--- COULEE ROCK SHOW; LA CROSSE, WISCONSIN

 It was a great day in La Crosse and I was ready to go, large coffee in hand.  The Coulee Rock Club did an outstanding job,  Congratulations.

The Onalaska Omni Center is a great place for smaller venues.

In my last posting I described my happiness is being able to wander around a spring edition (May 23-21) of the RMAG Promotions spring show at the Denver Crown Plaza Airport Convention Center.  It was really nice to buy a few minerals and take tantalizing peeks at some really fine specimens out of my price range.  But then my excitement really soared when I discovered that a trip to my ole stomping grounds of La Crosse, Wisconsin, coincided with the annual show of the Coulee Rock Club.  I was aware the show existed due to a couple of lectures at past shows; however, the coinciding dates was pure serendipity. Although small in members, the club has an outstanding and impressive cadre of show organizers and workers.  Their show was held on a two-day weekend (June 4-5) in a great venue—the Onalaska Omni Center. Dealers, along with Club activities for juniors/pebble pups/children, occupied most of the space. 

Kiddies, spin the wheel.
 

Although flint knapping was not participatory it attracted a large crowd of youngsters all day--watching in awe.

However, the Club did leave room for perhaps the most popular show event, the Silent Auction.  A long table held perhaps 15-20 stations that were changed on a regular rotation and successful bidders were quite pleased with their purchases--especially the younger members (who are the future members of our clubs).  I was actually amazed at the variety of items open for bidding with a number of different well-preserved early Paleozoic fossils that would give any kid a good start on a personal fossil collection.  In addition, there were a number of minerals, some well crystallized, from numerous states and a few foreign countries (but also unlabeled as to origin).  A few minerals had some old and quite fragile identification cards.  In other words, something for everyone, especially the younger rockhounds. 

 

I picked up an item or two, especially if bids were not coming in on a regular basis. I soon parted with the purchases by gifting to younger rockhounds who could not attend the Show:



Geodes and calcite crystals to grade school rockhounds.


Unfortunately this coiled Cretaceous ammonite (Placenticeras) was incomplete but had a beautiful display of suture lines.  My best guess is the critter was collected from the Pierre Shale (pretty certain) from South Dakota, perhaps Wyoming. Goes to an adult fossil hound.

OK, we don't need to know about locality information on this trilobite from a dealer.  My guess is Morocco 😁😁😁 Is there any reconstruction???

Crinoids are much more common at Midwest shows that in the West.  But no locality information!
All gars (Fish) have "lots of" sharp teeth.  Here is a saber tooth gar
.  No locality infornation.
Mineral specimens were sparse. Kyanite.
Sulfur.  Hard to tell if it was made last week or "long ago".  No information on locality or age. 

THE KEEPERS: 1) a visit with Doug Moore, formally with the University of Wisconsin System--biologist, but now one of the premier agate collectors and photographers in the country (HQ at Stevens Point, WI).  Doug had for sale a fantastic variety of agates, mostly Lake Superior and Fairburn.  He also sells some of his majestic photographs (my poster is at the framer so the photos below are substitutes).


 

Thin slice of Dryhead Agate. Nabbed from Pinterest.com. 


Photo from Art Gala night at 2016 Agate Expo.

THE KEEPERS: 2) I picked up an interesting circular "glob" of reddish-orange sandstone (~10 cm x 12 cm). It was pretty ugly and no one topped my bid of a buck.  I though it was an internal mold of a Cambrian jellyfish although it came without much information (zoophycos).  But a little research indicated that it was not a Cambrian jellyfish (although I was in good company as the famous paleontologist Charles Walcott (1896, 1898), he of Burgess Shale fame, described them as fossil medusa [the free swimming life cycle] of Cnidarians--the corals and jellyfish). That is interpretation number 2.

What I came up with my search was an enigmatic critter (or is it a critter) named Brooksella, that are collected from the Cambrian Conasauga Formation of the Coosa River Valley of Alabama and Georgia. They are known as star cobbles due to their lobate structure (3-15 lobes). Ciampaglio and others (2006) described  the morphology of Brooksella as most consistent with a siliceous (hexactinellid) sponge. So that is interpretation number two, a fossil sponge.

Now here comes interpretation number three, a non critter! Nolan and others (2016) examined a number of specimens and determined that "Brooksella’s composition and internal structure are similar to concretions from the Conasauga: quartz grains with minor amounts of calcite and small, oxidized, root-like holes partly filled with iron oxide and barite crystals. In situ Brooksella were rare and were oriented with their “oscula” and lobes downward, rather than upward if this was a once-living sponge. Furthermore, shale laminations were displaced by the growth of the putative sponge. We therefore think that the sponge designation is insufficiently supported, and we favor a concretional mode of formation for Brooksella."

What does all this mean? The popular literature seems to favor sponges.  In summary I really like the following from the web site of The Paleontological Research Institution (www.priweb.org.) They note that "texts and images on this website have Creative Commons-NonCommercial ShareAlike 4.0 International licenses."  I thank them for the right to copy and redistribute the material.

Shales and concretions in the middle Cambrian Conasauga Formation of northeastern Alabama and northwestern Georgia contain body and trace fossils showing the preservation of diverse soft-bodied organisms, as well as many mineralized skeletons. These include algae, sponges, arthropods, brachiopods, echinoderms, mollusks, and trace fossils. Some of the most curious Conasauga fossils are "star cobbles," referred to the genus Brooksella. These enigmatic fossils have been variously thought of as medusae (jellyfi sh), algae, trace fossils, or inorganic structures. Recent research suggests, however, that they are most likely sponges with siliceous (SiO2) skeletons.


Image

"Star cobbles" (Brooksella) from the Cambrian Conasauga Formation. Fossils are 2.5–centimeters (1–2 inches) across. Images from Walcott (1898; Monographs of the U.S.G.S, 30); public domain

REFERENCES CITED

 Ciampaglio, C.N., L.E. Babcock, C.L. Wellman, A.R. York, & H.K. Brunswick. 2006. Phylogenetic affinities and taphonomy of Brooksella from the Cambrian of Georgia and Alabama, USA. Palaeoworld 15: 256-265.

Ciampaglio, C.N., C. Wellman, H. Brunswick, A. York & L.E. Babcock. 2005. Reinterpretation of Brooksella from the Conasauga Formation (Cambrian) of Georgia and Alabama, USA. in The Fourth International Symposium on the Cambrian System and the Tenth Field Conference of the Cambrian Stage Subdivision Working Group, Nanjing, August 18-24, 2005, abstracts and short papers. Acta Micropalaeontologica Sinica 22(Supplement): 21-23.

Ciampaglio, C.N. & L.E. Babcock. 2006. Reinterpretation of Brooksella from the Conasauga Formation (Cambrian) of Georgia and Alabama, USA. Geological Society of America Abstracts with Programs 38(3): 4-5.

Nolan, Morrison, S.Walker, & A. Sharma, Ajay. 2016. RE-EVALUATION OF THE MIDDLE CAMBRIAN SPONGE, BROOKSELLA ALTERNATA , FROM THE CONASAUGA FORMATION, GEORGIA AND ALABAMA, U.S.A. Geological Society of America Abstracts with Programs 48 (7). 

Walcott, Charles. 1896. Fossil jelly fishes from the Middle Cambrian terrane: Proceedings of the United States National Museum. 18 (1086). 

Walcott, Charles. 1898. Fossil Medusae: Monographs of the United States Geological Survey. 30.