Franconia – Before the Gold Rush by Robert Verish
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Meteorite Times Magazine Contents by Editor Featured Monthly Articles Accretion Desk by Martin Horejsi Jim's Fragments by Jim Tobin Meteorite Market Trends by Michael Blood Bob's Findings by Robert Verish IMCA Insights by The IMCA Team Micro Visions by John Kashuba Meteorite Calendar by Anne Black Meteorite of the Month by Editor Tektite of the Month by Editor Terms Of Use Materials contained in and linked to from this website do not necessarily reflect the views or opinions of The Meteorite Exchange, Inc., nor those of any person connected therewith. In no event shall The Meteorite Exchange, Inc. be responsible for, nor liable for, exposure to any such material in any form by any person or persons, whether written, graphic, audio or otherwise, presented on this or by any other website, web page or other cyber location linked to from this website. 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Meteorite Times Magazine Mundrabillia, Australia: Where it all began. by Martin Horejsi Where it all began: Mundrabillia, Australia The etched face of of this 69g end section of Mundrabillia brought joy to its owner, and the touchable wonders of space to hundreds if not thousands of students in its several decades as the cornerstone of my collection. Twenty or so years ago, I bought my first meteorite, an etched end section of Mundrabillia, and the magic began. The iron was purchased as a teaching aid to share with students who were learning about space science. The specimen came from David New and was chosen under his guidance as a nice, affordable example of a meteorite that would serve my needs well. He was right. But instead of being one of the many buyers of a meteorite who never make the turn to a former collector of meteorites, I followed his suggestions for the next decade buying almost everything he suggested. And he was never wrong as far as I was concerned. While the etched piece of Mundrabilla was my first meteorite, this was the first specimen card in my collection. Back in those days of long-distance telephone fees and no internet, meteorite were advertised in mailings, and inquires were made one at a time over the phone. It didn’t take the collector long to learn that what was listed in the mailed flyer was likely just a sample of what was available. Once on the phone with the dealer, the true scope of the potential offerings came into focus. Decision making back then contained the elements of one-on-one attention. If I was on the phone with David, then at that moment, I was first in line for whatever he had to offer. On more than one occasion I passed on buying a sample David suggested only to call back a few hours or a day later only to learn it had sold minutes after I hung up. Is that rust or dirt? On achondrites like Millbillillie its obvious, but on irons like Henbury, Boxhole and Mundrabillia its not so obvious. Mostly its rust. Sometimes it a combination of the two. And in those wonderful non- sanatized examples, its authentic Australian soil which just happened to be the only documented witness to the fall of Mundrabillia. For me, those early days of meteorite collecting were truly magical. For many of us, the only specimens we knew of where in museums and our own collections. It took the internet to provide a global venue for sharing our collections with each other. The internet has also dramatically changed our was of exchanging meteorites. Pictures are a must, and instead of a tens or hundreds possible buyers receiving a listing in the mail, there is no ceiling to the number of people who can view a meteorite offering, which of course also means the collector is considerably more savvy with market values and available specimens. But in the long run it is the relationships and stories the meteorites fostered that really make collecting a joy. As 2012 greets us, I will be again taking a break from writing my Accretion Desk columns with the detail I usually put in to my tales. Many projects are taxing my time so even carving out the small handful of hours needed to create an Accretion Desk has become a challenge. I want to enjoy spinning my meteorite yarns, and with m time constraints right now, I see no option but go to to a more simplified type of Accretion Desk. And I’m just as excited to see what that is as you are. Until next time…. The Accretion Desk welcomes all comments and feedback. [email protected] Meteorite Times Magazine Alamo Breccia 2011 by Jim Tobin As I write this I am hoping I will have enough new material to offer from our second visit to the Alamo Breccia that I did not say in the original Alamo Breccia article of November 2002. But, I guess I will start by saying that when we were there a few weeks ago I thought it had only been 8 years. Then I looked at the magazine back issues and found to my surprise that it had been ten years ago. I looked over the original article and said to myself that is pretty good, I clearly had more time in my life to do research and to spend on writing. But, I will give it a shot anyway again this month. The Alamo Breccia is a prominent layer of rock that can be traced visually for a long distance undulating from ridge to ridge and mountain to mountain over a wide area of Nevada. Mostly a gray color it is seen usually as two close together thick bands of rocks with some thinner layers added. Up close investigation shows these apparently separate layers to actually be from the same event. At the Hancock Summit site the exposures are easy to find visually. However, to get up onto the top of one of them is a good hike up steep terrain. You will be making your own path most of the way since there is not a real trail to follow. So pick a rate of climb that you are comfortable with and then make your way from boulder to boulder up to the top of the ridge. A portion of the rocks projects forward as a separate prominence. The remainder of the mountain rises behind you. From there you can stand and look out over the valley. I am really uncomfortable up on top of the ridge. I managed to get up there but did not stay long. I retreated to a spot just a little lower where I could collect specimens from the side of the exposure rather then off the very top. Paul up on top of the layer where I did not stay long On our way up we had determined to find the stromatolites. We had missed the best deposit the first trip. So after photographing the single petroglyph that I showed in last month’s article we made sure to find the stromatolites. We knew they were near the bottom of the mountain. We began hiking up a little more westward this trip and found the stromatolites pretty easy. We also immediately saw that there had been a lot of core sampling done since we were there last. In several places numerous cores had been removed. Paul suggested that there may have been so many done in order to provide each person in a large group a core of their own. That makes quite a bit of sense. There were more cores taken then needed for dating or other analysis, dozens. From the top of the ridge you get a great view out toward Area 51 and part way around the valley that leads ultimately after a few more mountains to Rachel, Nevada. As I said at the beginning the layer of Alamo Breccia can be visually traced from ridge to ridge and across the intervening valleys and washes. I had been noticing what I was sure was the continuation of the layers on the other side of the road from where we parked. After eating lunch we headed across the road. The Alamo Breccia there was tilted much flatter showing more surface of each layer. It was much like playing cards fanned out rather than the cliff-like exposure of the entire thickness on the other ridge. But, like the exposure of the morning hike if you when farther around the hill it too became a cliff as can be seen in the following picture. On the previous trip years ago we had hiked over to the next mountain in the other direction, about, I would say half a mile away southward from the high difficult ridge. There the rocks were slightly different again. In this part of Nevada it is not hard to find the Alamo Breccia.