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Published by The Flatirons Mineral Club

Volume 52, No. 5                                                     September/October 2010

Flatirons Facets is published bimonthly by The Flatirons Mineral Club. The deadline for submission of articles to Flatirons Facets is the 20th of each month. Permission is granted for reprint if credit is given to the publication and author, unless specifically restricted.

Flatirons Facets
P. O. Box 3331

Boulder, CO 80307-3331

The Flatirons Mineral Club is a non-profit organization, established March 9, 1957, and dedicated to developing and maintaining interest in all aspects of earth science and associated hobbies. The club meets the second Thursday of each month at 7 p.m. We meet at The Senior Center, 9th and Arapahoe Avenue, Boulder, CO. Guests and visitors are welcome. Membership dues are $18.00 per year (beginning October of each calendar year). People interested in membership can contact the club either by writing to the above address or by attending one of the meetings.

Deadline for the November/December  2010 Facets is October  20.

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President’s Corner
Paul Boni

I can hardly believe that two years have flown by already. I have enjoyed my time as club president immensely. I want to thank you, one and all, for all you do and for who we are as a club and as friends. You’re such a great bunch to know and hang out with.

 

I want to thank everyone for the incredible honor bestowed upon me with the lifetime achievement award. It was a humbling surprise. Who would have thought that one could receive such a tribute by showing up and having fun? That’s the truth; I just show up and have fun with some of my friends. I’ve been doing it for years, contributing a bit here and there, but mostly having fun.

 

On a more somber note, we lost our beloved Charlotte in August. For all the years I’ve been a member of the Flatirons Mineral Club, Charlotte has always been there. She is one of the sweetest and kindest people that I have ever known. I’m sure that I speak for all of us when I say that she will be missed. She gave us so much. Thank you Charlotte, for everything.

 

I’ll sign off now. But don’t worry, I’ll be around to have some more fun and make more memories with my friends.

Rock on!


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Another Great Annual Picnic

Gerry Naugle

 

The annual club picnic held on Sat, Aug 21st was a success this year.  Approx. 40 members attended, enjoyed the potluck lunch and bagged cloth 810 grab bags for the Denver Show and the FMC Scholarship Endowment Fund. Thanks to all who brought side dishes and/or desserts for the luncheon.  And, all club members who supplied mineral specimens, bagged those specimens in the plastic baggies and who sewed cloth bags for the activities. Special thanks to Gabi Accatino's mother for sewing 1500 cloth grab bags over the past year!

Awards:

The AFMS/FMC Rock Hounds of the year for 2010 (as voted by club members) are co-winning voting recipients Gabi Accatino and Anita Colin.  They were presented with honorary 'Doctor of Rockology' certificates and their names engraved onto the FMC Hall of Fame Plaque.  Paul Boni was inducted into the FMC-Hall of Fame for Club Leadership. 

Anita and Gabi, Rockhounds of the Year, showing off their ‘Doctor of Rockology’ diplomas.

Paul Boni, inducted into the FMC Rockhound Hall of Fame

The Grab Bag Production Line at the Picnic

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Upcoming Club Programs

October 14: Our speaker is Peter Maciulaitis and his talk is entitled  "We always preferred lucky geologists to good ones". It's largely 'set' in Nevada and the modern gold rush once again. It's the story of Franco-Nevada, a Canadian penny stock that grew, in a period of 20 years, to the 5th largest gold mining company in the world and the dynamics of that growth.

November 11: This will be our annual Towel Show— bring specimens you have collected or jewelry you have made during 2010 and compete in one of many different categories, including “ugliest rock”.  Categories for kids, too! (Your items must all fit on one towel.)

Dec 10-12—Annual Flatirons Mineral Club Gem and Mineral Show at the Longmont Fairgrounds.  Exhibitors and volunteers are solicited

Dec 16—Our annual holiday party and anonymous gift exchange—bring a mineral, fossil, or lapidary-related gift in the $5-$10 range, and some holiday munchies. Beverages will be provided by the Club. This is always a lot of fun, especially for the kids!

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Thank You To All The Denver Show Volunteers
 
Barb Melby, 2010 Show Chair

The Show Committee wishes to send a heartfelt thank you to all the volunteers at the Denver Gem & Mineral Show.  The show would not happen without all of you.  It takes 400 plus volunteers to put on the show.  The Show Committee consists of about 35 people so you see it takes many more people than just Show Committee folks to operate the show.  It is truly a club show.  The loyal club members showed up and helped where they were needed.   At Wednesday’s set up, there was an ample number of persons to do the work, which made it so much easier on all.  Likewise, on Sunday’s tear down, there were enough people to complete the job in a timely manner.  Having enough people makes all the difference.  Thanks to all who helped with admissions, security, exhibits, hospitality room, schools, gemstone give away, grab bag and poster sales, volunteer check in, and anyone else I might have missed.  So we hope you enjoyed the show and will be back next year.   The show is the most exciting event in Denver all year for our hobby.  It is a GRAND EVENT and we hope you participated in it fully!

Here are the winners of the various case categories:

Richard M. Pearl Trophy:   Larry Havens (barite, Frizington, England)

Best of  Species Trophies:

    Thumbnail –  Nick North (wire silver, Creede)

    Miniature –   Larry Havens (silver on quartz, Creede)

    Cabinet –  Kent Havens (barite, Wagon Wheel Gap, Colorado)

    Oversize Cabinet –  Larry Havens (barite, Bulldog Mine, Creede)

Best Fossil:  Jordan Sawdo (turtle shell)

Prospector’s Trophy:  Eric and Sarah Mitchell (precious opal, Nevada)

Junior Prospector’s Trophy – Trevor Smith (barite, Hartsel, Colorado)

C. E. “Shorty” Withers Trophy: Ed Raines (Minerals of the Creede Mining District)

                        

Winners of Competitive Exhibits:

Best Museum Trophy:  Colorado School of Mines

Individual Competitive Case Trophies:

    Thumbnail Minerals, Any Type – Nick North (Advanced )

    Minerals, Open Class – Richard Tripp (Master)

    Unlimited Minerals, One Species – Lou Conti (Master – Fluorites)

    Miniature Pseudomorphs – Barbara Sky (Master)

    Thumbnail Minerals, Any Type – Alexander Schauss (Master)

    Educational, General Concept – Richard Tripp (agates)

Club Prospector Trophy:  Littleton Gem and Mineral Club

Ray and Dorothy Horton at the FMC table at the Denver Show

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News from the FMC Board of Directors

The FMC Board wishes to greatly thank Paul Boni for two years at the helm of the club.  The proposed slate of officers for 2010-2011 is Evan Elliott for President, Ray Gilbert as VP for Show, Gabi Accatino and Anita Colin as co-VPs for Field Trips, Kristi Traynor as Secretary and Gerry Naugle as Treasurer. At this writing we still need a VP for Programs.  That position is easy and fun, try it out


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Denver Council & Denver Show Update

Gerry Naugle

 

The proposed slate of officers for next year for the Denver Council are exactly the same folks as this past year, as they have all volunteered in those positions for a 2nd year. The 2010 Denver show had approximately the same paid attendance and revenues as the 2009 show, not too bad given economic factors. And there was an increase in school kids attending on Friday of the show.

 

Our club’s special case at the Denver Show, in remembrance of Charlotte Morrison

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Jr. Geologists Activities

 

The Jr. Geologists meet on the third Thursday of each month, beginning at 6:30.   This fall we are learning more about fossils as we earn the Fossil Badge.  For the meeting on October 21st, each Jr. Geologist needs to pick their favorite dinosaur.  Find out when it lived, what it ate, and where you can find fossils of your dinosaur.  Also, bring a picture of your dinosaur to the October meeting.

New for This Year:  For all Jr. Geologists 10 years and older, we will kick off the advanced juniors program in October.  We will go deeper into each subject, earn additional badges, plus go on special trips just for the advanced juniors.  Stay tuned for more details.

The Jr. Geologists program is open to all Flatirons Mineral Club families.  Each month we learn more about geology, plus earn badges for different earth science activities.  For information about the Jr. Geologists program, please contact Dennis Gertenbach.

 

Wesley and Natalie studying how this fossil formed.

Malakai and Andrew making fossils.

 

Jr. Geologists at McCoy

In August, the Jr. Geologists headed to McCoy to collect Pennsylvanian-aged fossils.  McCoy is well known for its abundant Paleozoic fossils, including brachiopods, crinoids, horn corals, sea urchin spines, and even an occasional shark tooth.  One particularly interesting spot is a place named Crinoid City, because the ground is littered with crinoid stems of all shapes and sizes.  Everyone found lots and lots of fossils to add to their collections.  We want to thank the landowners for allowing us to collect at Crinoid City.

 

Jr. Geologists collecting fossils at Crinoid City in the McCoy area.

Preston Daley with several crinoid stems he found.

A nice Composita brachiopod found on the trip.

 

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In The Dark (UV Topics)

English Fluorite

John Hurst

 

Fluorite, Weardale Mining District, Durham, England

Fluorite-Green, (also: Golden, & Purple)

Fluorescence:  Bluish White under LW, MW, and SW

Activator: europium, Eu 2+

The Weardale District Fluorites are best known as the fluorite specimen that fluoresces in broad daylight.  While we need a dark room and a U-V lamp to detect fluorescence in most minerals, you can take your piece of green Rogerly Mine Fluorite out into direct sunlight and it fluoresces so strongly that you see the crystal tips turn bluish purple without even using a U-V lamp. Certainly, the fact that it fluoresces under all three wave lengths plays a huge role in its visibility in daylight.  It shows up moderately under shortwave, brighter under mid-wave and stronger yet under longwave U-V.  Hit that specimen with all three wave lengths at once and the wattage hits the top of the chart.  For the serious U-V collector, Rogerly Mine Fluorites are a must for your LW, MW and SW displays.

The Weardale Mining District has a noteworthy history.  Originally the area was mined for the lead ores in the 1600’S and 1700’s and eventually was abandoned when the lead ore was mostly mined out. The mines sat inactive until the Swiss bought up the claims and started mining the fluorites for use as a flux in the Swiss steel industry.  Either the Swiss found a better flux or economic reasons lead them to eventually abandon their claims.  Today, the Rogerly mine is one of the few mines that is mined for collector specimens.  Their Green Fluorite makes the best U-V specimens, however there is a Golden Fluorite and a Purple Fluorite from there that are reputed to fluoresce as well.

Safety note: “Never look directly at a U-V lamp.”  Instead, use a small piece of Rogerly Fluorite to check your lamp to see if it is on, it works on all three wave lengths.


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Fossils in the News
Dennis Gertenbach

Triceratops no Longer a Dinosaur?

For children and adults, Triceratops is one of everybody’s favorite dinosaurs.  However, a new study by John Scannella and Jack Horner of the Museum of the Rockies published in the Journal of Vertebrate Paleontology indicates that Triceratops may not be a distinct dinosaur.  Rather, their 10-year study indicates that Triceratops are actually juveniles of another dinosaur, the Torosaurus.  As they age, their skulls change shape.  Both Triceratops and torosaurs are found in the same region and age, but torosaurs were always larger than Triceratops and had different horns and frills.  By studying nearly 50 skulls, the researchers show a clear transition from Triceratops to Torsaurus. 

So which name will be dismissed?  Usually, the name given to the first published description is kept, so the name Triceratops will probably remain.

 

A 1904 drawing of Triceratops by Charles R. Knight. Will their name change to Torosaurus?

 

Gigantic Prehistoric Whale Hunted Other Whales

A giant whale, equipped with 14-inch teeth, would have feasted on other smaller whales 12-13 million years ago, researchers say. Fossils found in Peru suggest that this killer was longer than a school bus, between 43 and 59 feet long.  Its skull alone measured almost 10 feet. Olivier Lambert of the National Museum of Natural History in Paris, France based this conclusion about what Leviathan melvillei ate on the size of the teeth and the strength of the jaws.  Most likely, this whale was able to tear pieces of meat from its prey much like a modern killer whale. Only the giant shark, Megalodon, would have equaled L. melvillei in size.

 

An artist’s rendition of Leviathan melvillei attacking a smaller whale.

 

Fossils of the Oldest Multicellular Life?

Scientists have reported in the journal Nature small ½-inch structures in shale deposits from Gabon that may be fossils of the oldest known multicellular life. The specimens are 2.1 billion years old, 200 million years older than the previously identified multicellular species.  Lead scientist, Abderrazak El Albani, and colleagues describe the fossils as resembling irregularly shaped "wrinkly cookies".  The question remains if these truly represent larger organisms or are merely the remains of mats of unicellular bacteria.

 

These structures may be fossils of the oldest known multicellular life.

 

Back When T. Rex Was a Wimp

Ancestors of the greatest land predator of all time were not so big.  A recently published study indicated that they spent most of their evolutionary history skulking in the shadows of other giant predators.  And, they may have even been covered with hair-like feathers reported Stephen Brusatte of the American Museum of Natural History in New York City.

Brusatte and colleagues have published the first detailed family tree for tyrannosaurs in the journal Science. Tyranosaurs first originated about 165 million years ago during the middle Jurassic. They remained mostly small, fast-footed dinosaurs just one hundredth the size of T. rex. Even as late as 80 million years ago, tyranosaurs were still only about the size of humans.  After that time until the extinction of the dinosaurs about 65 million years ago, tyranosaur species grew much larger. T. rex added more than 4 pounds per day as they approached maturity, reaching 11,000 to 17,600 pounds.

 

Reconstructed body silhouettes of three tyrannosaurs. Dilong on the left is 125 million years old and the smallest known tyrannosaur.  Xiongguanlong, shown in grey, is much larger, but is still dwarfed by T. rex, shown on the right. From M. Donnelly/The Field Museum

 

Carnivorous Terror Bird Pecked Its Prey to Death

Anyone who has seen a reconstruction of a terror bird, such as the one accompanying this article, instantly knows that this species was a fearsome predator.  This family of birds sported thick bills used to attack and kill their prey.  A recent study of fossils of Andalgalornis steulleti, which roamed South America 6 million years ago years ago, indicate that this bird pecked its prey to death, landing swift jabs, retreating, and attacking again and again.  Once its victim was dead, it was swallowed whole, or the bird ripped pieces of flesh from the carcass. 

The researchers from the La Plata Museum in Argentina and Ohio State University used x-ray images of the bird’s skull, examining the stresses that would develop when the bird struck or shook its prey. The results indicate that the bird would suffer catastrophic skull fractures if it tried to shake its prey from side to side, eliminating this as a possible mode of attack. Instead, the creature's large, rigid skull and strong neck muscles were designed for swift, front-on attacks.

 

An artist’s rendition of a terror bird.

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Special GSA Dinosaur Ridge Field Trips

Clare Marshall, 303.697.3466 x 105

 

The Geological Society of America Meeting is in Denver this year, and field trips are planned for the Dinosaur Ridge area. You don't have to be a member of GSA or registered for the meeting to join the field trips! But you do have to register for the field trips themselves.   Here is the web site:     http://www.geosociety.org/meetings/2010/ft-pre.htm (you need to scroll down to the field trip number to register)

 

Saturday, October 30 Field Trips:

#408. Red Rocks and Dinosaur Ridge Hike.

#411. Mountain Bike adventure, Red Rocks, Dinosaur Ridge and Matthew Winters Parks.

#413. Dinosaur Quarries. New interpretation of paleoecology and history of quarries.

 

Monday, November 1 Field Trip:

#415. Geology of Dinosaur Ridge Family Trip.

 

Thursday, November 4 Field Trip:

#419. Old and new geologic studies of the Front Range.

 

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Upcoming Events, Nearby & Elsewhere

Wed., Oct. 13, 4:30-6:30 p.m., Field Trip, a public field trip for Earth Science Week will be led by USGS geologist Dr. Pete Modreski.  This will be a short (1/2 mile) hike to see an old copper mine located at the base of Lookout Mountain, on the outskirts of Golden, CO.  We will meet at 4:30 p.m. at the cul-de-sac at the end of Bonvue Drive, one block off Lookout Mountain Rd. and 0.85 mile west of the traffic light at 6th Ave. and 19th St., Golden.  Be prepared for a rough trail with cactus, rocks, brush, and poison ivy; elevation climb is about 200 feet.  We'll see and discuss local geology, rocks, minerals, and natural history.  For questions or more info contact Pete Modreski, 303-202-4766.

Mon., Oct. 11, 6:00 p.m., "Crystal Mining in the Crystal Peak Area" by Joseph Dorris; the public is invited to this presentation sponsored by the Pikes Peak Posse of the Westerners; at Colorado Springs Masonic Hall, 1150 Panorama Dr., Colorado Springs, CO 80904; "Author Joseph Dorris, a lifelong miner, mineral collector and dealer as well as owner of Glacier Peak Mining LLC, will share with you an insight into the depths of mining and producing Colorado mineral specimens and gemstones including amazonite, smoky quartz, and topaz."

Sat., Oct. 16, Dinosaur Discovery Day at Dinosaur Ridge, Morrison, CO, featuring Girl Scout Day as well as National Fossil Day, International Astronomy Day, World Space Week, and Earth Science Week at Dinosaur Ridge! 10 a.m. to 3 p.m.; please use off-site parking at Thunder Valley, north of the Dino Ridge Visitors Center on Rooney Road; a shuttle bus will take you to the Visitors Center.  All are welcome, with special activities planned for Girl Scouts. "Guides will be stationed along the trail to explain the geology and fossils.  Hiking the trail is free; our shuttle will be available for $3.00 per person, five and under ride free. Dinosaur Ridge is located just west of the C-470 exit at Alameda Parkway. For more information email Tom_Moklestad@dinoridge.org or call 303-697-3466."

Sat.-Sun., Oct. 23-34, Mineral Sale at the home ("in our barn", actually) of Ray and Eloise Berry, 7513 Tudor Rd., Colorado Springs (I-25 exit 149), 9 a.m. - 4 p.m.; please call 719-598-7877 or email rayber@q.com for directions or more info.

Tues., Oct. 26, The Friends of Dinosaur Ridge Fireside Chat Series presents "The Chinese National Museum", by Dr. Bruce Geller, Director, Colorado School of Mines Geology Museum.  7:00 p.m., at the Lutheran Church of the Master, NE corner of Bear Creek Parkway, W. Alameda, and W. Jewell Ave., Lakewood, CO.  "In the spring of 2010 Dr. Geller had the rare opportunity to take a backroom tour of the Chinese National Museum.  Come and see his pictures and hear the story of his "trek" through this famed storehouse of fossils!"  For more info please call Tom Moklestad, 303-697-3466.

November 5-7, Denver Area Mineral Dealers Annual Gem & Mineral Show, Jefferson County Fairgrounds Exhibit Halls, 15200 W. 6th Ave, Golden, CO. Hours: Fri. & Sat. 10 am-6 pm. Sun. 11 am-4 pm. 18 Dealers with Minerals, Fossils, Lapidary, Jewelry, & Carvings. Public Welcome. Free Admission! Information: call (303)279-5504 or (303)986-3647.

 Sun. Oct. 31- Wed. Nov. 3, The Geological Society of America Annual Meeting, a national geological conference, takes place in Denver at the Convention Center.  Geologists must register to attend the meeting, but we at the USGS (Pete Modreski) have a limited number of complimentary passes for admission to the exhibit hall only (many exhibits by geoscience companies, book publishers, professional societies, universities, state geological surveys).  The exhibit hall is open Sunday 6-8 p.m. (welcoming session), Monday and Tuesday 9 a.m. - 6 p.m., Wednesday 9 a.m. - 2 p.m.  If you are interested in coming to see the exhibits please contact Pete Modreski, 303-202-4766.

Fri., Nov. 5, "Rock Out for the Ridge" is a fund-raising evening (dinner, silent auction, and lecture) for the Friends of Dinosaur Ridge, held at the Red Rocks Park Visitors Center.  The lecture presentation will be by Mr. Mike Green, "The Rooney Ranch Story". Tickets for the event are $75; for more information please contact Clare Marshall at 303-697-3466 x 105 or dinodiscovery@dinoridge.org.

Sat. & Sun., Nov. 20 - 21, Hands of Spirit Gallery 13th Annual Holiday Mineral and Jewelry Open House from 11:00 am to 5:00 pm.  You're sure to find an incredible selection of the finest crystal and mineral specimens and a lovely selection of jewelry. Refreshments will be served.  Call 303-541-9727 for directions and further information. http://www.handsofspirit.com. Sat. & Sun., Nov. 20 - 21, Hands of Spirit Gallery 13th Annual Holiday Mineral and Jewelry Open House from 11:00 am to 5:00 pm. You're sure to find an incredible selection of the finest crystal and mineral specimens and a lovely selection of jewelry. Refreshments will be served. Call 303-541-9727 for directions and further information.

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Calendar of Events

Oct 14 FMC Club Meeting, 7:00 PM, West Boulder Senior Ctr, 9th & Arap. Peter Maciulaitis will have a talk from the modern Nevada gold rush era

Oct 21 Junior Geologists Meeting At Charlotte’s house, as usual. Contact Dennis Gertenbach

Oct 25 FMC Board Meeting Charlotte Morrison’s house, 7:15 p.m.

Nov 1 FMC Show Committee Meeting, Boulder Co. Fairgrounds. Contact Ray Gilbert.  

Nov 11 FMC Club Meeting, 7:00 PM, West Boulder Senior Ctr, 9th & Arap. Annual Towel Show.

Nov 29 FMC Board Meeting Location to be announced.

Dec 10-12 FMC Annual Show, Longmont Fairgrounds. Details in next newsletter.

Dec 16 FMC Club Meeting, 7:00 PM, West Boulder Senior Ctr, 9th & Arap. Annual holiday gift exchange

 

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Updated 10/14/10