DOCSLIB.ORG

MMGM Newsletter

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

March 2017 MMGM Newsletter 99 Main Street • Bethel, Maine • mainemineralmuseum.org • (207) 824-3036 From the Director’s Desk—Meteorite Lecture By Barbra Barrett, MMGM Director Most people are fascinated by a brilliantly starlit sky or bemused when they see a shooting star or better yet a meteor shower. Those fleeting trails of light caused by small particles burning up high in the atmosphere dazzle the child in all of us. Even more phenomenal, larger space debris sometimes falls to earth creating a magnificent glow during its rapid descent. Recovered fragments from these events are meteorites. MMGM will host two special events in April focusing on these extraordinary and educational rocks from space. Last May a very bright fireball was observed over Maine telescopes can observe new Solar Systems forming today most likely resulting in a meteorite fall north of Rangeley and based on the information from the meteorites we Lake. Unfortunately, the meteorite was never found, hope to find new Solar Systems that resemble our own. despite a considerable effort to locate it. Meteorites contain Meteorites bring us closer to understanding the origin of our material from the birth of our Solar System and are used solar system as well as life on our own planet. to understand how and when it formed. These meteorites Henning Haack received his PhD in Geophysics from aid us in finding out which types of stars delivered material the University of Copenhagen, and did postdoc work at to our Solar System. The latest generation of astronomical the Planetary Geosciences division at the University of (continued page 2) 1 Hawaii and at the Institute of Physics zoom out to space to see where these in Odense. He has served as an unique rocks originated. There will be CALENDAR AT THE MUSEUM AND MORE... Associate Research Professor at the an opportunity to see a selection of Danish Center for Remote Sensing and spectacular meteorites – the rocks that Maine Mineralogical & Geologi- curator for the Geological Museum at document the birth and early evolution cal Society’s 34th Annual Gem, the University of Copenhagen. He has of our Solar System. For tickets and Mineral & Jewelry Show searched for meteorites in numerous more information please visit https:// April 1-2, 2017 locations including the Antarctica, astro.umaine.edu/events/science- Saint Joseph’s College, Cape York, and the blue ice fields in lecture-series. Standish, ME Greenland. He has received a number Emera Astronomy Center of honors including the University of Henning will also be presenting his Science Lecture Series Copenhagen’s Gold Medal, The United lecture at the Museum as part of our April 6, 2017 • 7:00 PM States Congress Antarctic Service Third Thursday Talks on April 20th Meteorites and the Origin of the Medal, and has an asteroid named in at 7:00PM. We will open the doors Solar System his honor (Asteroid 7005 –Henning at 6:00PM for a special social hour Dr. Henning Haack – MMGM’s Research Associate Haack). He currently is an Associate and sneak peek at some of MMGM’s Emera Astronomy Center Researcher at the Maine Mineral and premiere meteorite collection. We hope 167 Rangeley Rd Gem Museum in Bethel and teaches at that you will join us for one of these Orono, Maine 04469 Science Talents in Denmark. memorable events. On April 6th at 7:00 PM, Henning will be the guest science lecture series Warmly, MMGM Tours & Talks April 20, 2017 speaker the at University of Maine’s 6:00 PM Social & Emera Astronomy Center in Orono. Collection Preview The lecture will take place in the Barbra 7:00 PM Lecture planetarium under the stars and allow Talk: Meteorites – Dr. Henning participants a special opportunity to Haack, Research Associate Maine Mineral & Gem Museum Collections—Meteorites 44th Rochester By Carl Francis, Curator Mineralogical Symposium Collections, if they April 20th – 24th, 2017 April 21, 2017 - Technical Session are any good, - Contributed Papers in are the product of Specimen Mineralogy personal passion 1:00-5:00 PM – Dr. Carl Francis, regardless of Curator MMGM whether they are Annual MMGM Mineralogical private collections Heritage Awards Banquet or museum May 12, 2017 • 4:30-6:45 PM collections. MMGM Tickets: $30 per person co-founder Larry Stifler is a passionate To register go to: collector of meteorites—those rare www.mainemineralmuseum. rocks that have fallen from space. He org/join-us/heritage-award- fell in love with the pallasites, which banquet-2017 are stony irons-metallic nickel-iron with New England inclusions of olivine (or peridot, the Mineral Conference August birthstone). If a pallasite is cut May 12th – 14th, 2017 into a thin slice the olivines transmit Grand Summit Hotel – Sunday light and they look something like a River Resort, Newry, ME www.nemineralconference.org 2 stained glass window. In order to share his meteorites with She is as excited about showing meteorites to visitors the public and to make MMGM an even more unique and as Larry. Barbra is involved in every aspect of curating attractive destination, Larry decided to install his collection the Stifler collection and planning for its exhibition. Her in the museum. They will occupy the second floor of the administrative assistant Chrys Snogren is equally involved new building above the museum’s gift shop. One will have maintaining specimen documentation and overseeing their to go to New York City to see anything comparable. storage. Meteorites will not just be displayed here; they will Meteorites arrive frequently at the museum and require occupy the largest gallery space and be a major attraction curation. Director Barbra Barrett has taken on this and educational resource. responsibility and in doing so discovered a new passion. Events—Third Thursday Talks Resume By Annemarie Saunders, MMGM Staff Spring is here! To celebrate we The 2nd Annual MMGM Mineralogical Heritage Awards are queuing up for some great Banquet takes place on May 12 in conjunction with the MMGM events. We will kick April New England Mineral Conference being held at the Grand off by participating at the Maine Summit Hotel at the Sunday River Resort in Newry, ME. Mineralogical and Geological Society’s Tickets are $30.00 per person by advanced registration Gem and Mineral show at St. Joseph’s only and can be purchased on our website: www. College in Standish. MMGM’s visiting mainemineralmuseum.org/join-us/heritage-award- Research Associate, Dr. Henning banquet-2017. If you have any questions, please contact Haack will be the guest lecturer at the Annemarie at [email protected] or Emera Astronomy Center for their Science Lecture Series at 207.824.3036. For NEMC registration please visit their on April 6th at the University of Maine in Orono. Our Third page at www.nemineralconference.org. Thursday Talks will resume on April 20th with a repeat performance of Henning’s talk for those who miss the Our preview gallery is open Monday – Saturday 10:00 event in Orono. MMGM’s curator, Dr. Carl Francis will be am – 5:00 pm and can be accessed through the Museum speaking at the Rochester (NY) Mineralogical Symposium Store. Stop in for a sneak peek of minerals and meteorites on April 21 from 1:00-5:00 pm. Registration information for in MMGM’s collection and check out exciting new jewelry this event can be found at www.rasny.org. designs in the store. 3 Treasures–Meteorite Jewelry By Maggie Kroenke, MMGM Staff Are you looking for a truly out of this Most meteorites fall world gift? Our selection of jewelry unobserved, but not Sikhote- featuring meteorites from around the Alin. Its fall in eastern Siberia world should do the trick! Choose in 1947 was spectacular from: Campo del Cielo from Argentina, and created more than one Gibeon from Namibia, Muonionalusta hundred small craters. Most of from Sweden and Seymchan or the pieces are set in sterling Sikhote-Alin, from Russia. silver, but a few were created with yellow gold. A large portion of our jewelry features the Muonionalusta iron meteorite that was found in 1906 in one of Sweden’s The most striking pieces are those made with slices of most northern counties. The pattern of very fine, Seymchan. They show the transparent crystals of peridot intersecting lines, called that define the pallasite class of meteorites. Seymchan Widmanstatten pattern, is was found in a Russian riverbed in 1967. Sometimes those a characteristic feature of peridot crystals can be cut into gemstones. Come take a Muonionalusta brought out by look at our large selection of meteorite jewelry from T & etching the slices with nitric M Stones, Brian Quigley and stay tuned for new pieces acid. This pattern forms as of jewelry by Maine jewelry designer Christine Peters the iron cooled in the core featuring these gorgeous little gems. of an asteroid over millions Hours: Monday through Saturday 10:00 am to 5:00 pm. of years and cannot be www.mainemineralmuseum.org replicated in a laboratory. Science–Closer Look At Meteorites By Al Falster, Skip Simmons & Karen Webber, MP2 Research Group The MMGM laboratory is primarily was submitted with just such cutting torch marks. That focused studying on the origin sample also bore an imprinted number, which is generally of granitic pegmatites and their accepted as indicative of the man-made nature of such a minerals but we occasionally find! get submissions of suspected meteorites. Unfortunately, none of Other suspected meteorites turned out to be various natural the samples submitted so far has rocks: non-vesicular basalt, greenstone, scoria, gabbro and turned out to be a meteorite. Many iron-stained limestone. are magnetic, but a lot of natural rock samples exhibit magnetism due to the presence of magnetite or pyrrhotite.
Recommended publications

  • Handbook of Iron Meteorites, Volume 3

    Sierra Blanca - Sierra Gorda 1119 ing that created an incipient recrystallization and a few COLLECTIONS other anomalous features in Sierra Blanca. Washington (17 .3 kg), Ferry Building, San Francisco (about 7 kg), Chicago (550 g), New York (315 g), Ann Arbor (165 g). The original mass evidently weighed at least Sierra Gorda, Antofagasta, Chile 26 kg. 22°54's, 69°21 'w Hexahedrite, H. Single crystal larger than 14 em. Decorated Neu­ DESCRIPTION mann bands. HV 205± 15. According to Roy S. Clarke (personal communication) Group IIA . 5.48% Ni, 0.5 3% Co, 0.23% P, 61 ppm Ga, 170 ppm Ge, the main mass now weighs 16.3 kg and measures 22 x 15 x 43 ppm Ir. 13 em. A large end piece of 7 kg and several slices have been removed, leaving a cut surface of 17 x 10 em. The mass has HISTORY a relatively smooth domed surface (22 x 15 em) overlying a A mass was found at the coordinates given above, on concave surface with irregular depressions, from a few em the railway between Calama and Antofagasta, close to to 8 em in length. There is a series of what appears to be Sierra Gorda, the location of a silver mine (E.P. Henderson chisel marks around the center of the domed surface over 1939; as quoted by Hey 1966: 448). Henderson (1941a) an area of 6 x 7 em. Other small areas on the edges of the gave slightly different coordinates and an analysis; but since specimen could also be the result of hammering; but the he assumed Sierra Gorda to be just another of the North damage is only superficial, and artificial reheating has not Chilean hexahedrites, no further description was given.
  • Metal-Silicate Fractionation and Chondrule Formation

    Metal-Silicate Fractionation and Chondrule Formation

    A756 Goldschmidt 2004, Copenhagen 6.3.12 6.3.13 Metal-silicate fractionation and Fe isotopes fractionation in chondrule formation: Fe isotope experimental chondrules 1 2 2,3 constraints S. LEVASSEUR , B. A. COHEN , B. ZANDA , 2 1 1 1 1 2 2 R.H. HEWINS AND A.N. HALLIDAY X.K. ZHU , Y. GUO , S.H. TANG , A. GALY , R.D. ASH 2 AND R.K O’NIONS 1 ETHZ, Dep. of Earth Sciences, Zürich, Switzerland ([email protected]) 1 Lab of Isotope Geology, MLR, Chinese Academy of 2 Rutgers University, Piscataway, NJ, USA Geological Sciences, 26Baiwanzhuang Road, Beijing, 3 Muséum National d’Histoire Naturelle, Paris, France China ([email protected]) 2 Department of Earth Sciences, Oxford University, Parks Road, Oxford, OX1 3PR, UK Natural chondrules show an Fe-isotopic mass fractionation range of a few δ-units [1,2] that is interpreted either as the result of Fe depletion from metal-silicate Recent studies have shown that considerable variations of fractionation during chondrule formation [1] or as the Fe isotopes exist in both meteoritic and terrestrial materials, reflection of the fractionation range of chondrule precursors and that they are related, through mass-dependent [2]. In order to better understand the iron isotopic fractionation, to a single isotopically homogeneous source[1]. compositions of chondrules we conducted experiments to This implies that the Fe isotope variations recorded in the study the effects of reduction and evaporation of iron on iron solar system materials must have resulted from mass isotope systematics. fractionation incurred by the processes within the solar system About 80mg of powdered slag fayalite was placed in a itself.
  • Australian Aborigines and Meteorites

    Australian Aborigines and Meteorites

    Records of the Western Australian Museum 18: 93-101 (1996). Australian Aborigines and meteorites A.W.R. Bevan! and P. Bindon2 1Department of Earth and Planetary Sciences, 2 Department of Anthropology, Western Australian Museum, Francis Street, Perth, Western Australia 6000 Abstract - Numerous mythological references to meteoritic events by Aboriginal people in Australia contrast with the scant physical evidence of their interaction with meteoritic materials. Possible reasons for this are the unsuitability of some meteorites for tool making and the apparent inability of early Aborigines to work metallic materials. However, there is a strong possibility that Aborigines witnessed one or more of the several recent « 5000 yrs BP) meteorite impact events in Australia. Evidence for Aboriginal use of meteorites and the recognition of meteoritic events is critically evaluated. INTRODUCTION Australia, although for climatic and physiographic The ceremonial and practical significance of reasons they are rarely found in tropical Australia. Australian tektites (australites) in Aboriginal life is The history of the recovery of meteorites in extensively documented (Baker 1957 and Australia has been reviewed by Bevan (1992). references therein; Edwards 1966). However, Within the continent there are two significant areas despite abundant evidence throughout the world for the recovery of meteorites: the Nullarbor that many other ancient civilizations recognised, Region, and the area around the Menindee Lakes utilized and even revered meteorites (particularly of western New South Wales. These accumulations meteoritic iron) (e.g., see Buchwald 1975 and have resulted from prolonged aridity that has references therein), there is very little physical or allowed the preservation of meteorites for documentary evidence of Aboriginal acknowledge­ thousands of years after their fall, and the large ment or use of meteoritic materials.
  • Lost Lake by Robert Verish

    Lost Lake by Robert Verish

    Meteorite-Times Magazine Contents by Editor Like Sign Up to see what your friends like. 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 Galactic Lore by Mike Gilmer Meteorite Calendar by Anne Black Meteorite of the Month by Michael Johnson 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. The Meteorite Exchange, Inc. does not endorse, edit nor hold any copyright interest in any material found on any website, web page or other cyber location linked to from this website. The Meteorite Exchange, Inc. shall not be held liable for any misinformation by any author, dealer and or seller. In no event will The Meteorite Exchange, Inc. be liable for any damages, including any loss of profits, lost savings, or any other commercial damage, including but not limited to special, consequential, or other damages arising out of this service. © Copyright 2002–2010 The Meteorite Exchange, Inc. All rights reserved. No reproduction of copyrighted material is allowed by any means without prior written permission of the copyright owner.
  • March 21–25, 2016

    March 21–25, 2016

    FORTY-SEVENTH LUNAR AND PLANETARY SCIENCE CONFERENCE PROGRAM OF TECHNICAL SESSIONS MARCH 21–25, 2016 The Woodlands Waterway Marriott Hotel and Convention Center The Woodlands, Texas INSTITUTIONAL SUPPORT Universities Space Research Association Lunar and Planetary Institute National Aeronautics and Space Administration CONFERENCE CO-CHAIRS Stephen Mackwell, Lunar and Planetary Institute Eileen Stansbery, NASA Johnson Space Center PROGRAM COMMITTEE CHAIRS David Draper, NASA Johnson Space Center Walter Kiefer, Lunar and Planetary Institute PROGRAM COMMITTEE P. Doug Archer, NASA Johnson Space Center Nicolas LeCorvec, Lunar and Planetary Institute Katherine Bermingham, University of Maryland Yo Matsubara, Smithsonian Institute Janice Bishop, SETI and NASA Ames Research Center Francis McCubbin, NASA Johnson Space Center Jeremy Boyce, University of California, Los Angeles Andrew Needham, Carnegie Institution of Washington Lisa Danielson, NASA Johnson Space Center Lan-Anh Nguyen, NASA Johnson Space Center Deepak Dhingra, University of Idaho Paul Niles, NASA Johnson Space Center Stephen Elardo, Carnegie Institution of Washington Dorothy Oehler, NASA Johnson Space Center Marc Fries, NASA Johnson Space Center D. Alex Patthoff, Jet Propulsion Laboratory Cyrena Goodrich, Lunar and Planetary Institute Elizabeth Rampe, Aerodyne Industries, Jacobs JETS at John Gruener, NASA Johnson Space Center NASA Johnson Space Center Justin Hagerty, U.S. Geological Survey Carol Raymond, Jet Propulsion Laboratory Lindsay Hays, Jet Propulsion Laboratory Paul Schenk,
  • Ron Hartman and the Lucerne Valley Meteorites by Robert Verish Ron Hartman and the Lucerne Valley Meteorites

    Ron Hartman and the Lucerne Valley Meteorites by Robert Verish Ron Hartman and the Lucerne Valley Meteorites

    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. The Meteorite Exchange, Inc. does not endorse, edit nor hold any copyright interest in any material found on any website, web page or other cyber location linked to from this website. The Meteorite Exchange, Inc. shall not be held liable for any misinformation by any author, dealer and or seller. In no event will The Meteorite Exchange, Inc. be liable for any damages, including any loss of profits, lost savings, or any other commercial damage, including but not limited to special, consequential, or other damages arising out of this service. © Copyright 2002–2011 The Meteorite Exchange, Inc. All rights reserved. No reproduction of copyrighted material is allowed by any means without prior written permission of the copyright owner.
  • To Thermal History of Metallic Asteroids

    To Thermal History of Metallic Asteroids

    44th Lunar and Planetary Science Conference (2013) 1129.pdf TO THERMAL HISTORY OF METALLIC ASTEROIDS. E.N. Slyuta, Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, 119991, Kosygin St. 19, Moscow, Russia. [email protected]. Introduction: Physical-mechanical properties of interval of temperatures T-transition from plastic to a iron meteorites depend on structure, chemical and min- fragile condition in iron meteorites is not observed that eralogical composition, from short-term shock loading usually is not characteristic for technical alloys and and from temperature [1]. The yield strength increases, steels at which at decreasing of temperature the plas- if size of kamacite and rhabdites crystals decreases, ticity can decrease down to 0. For example, for iron- and nickel and carbon contents increases. The more Ni nickel alloy at Ni content about 5% the curve T-bend is content, the more taenite, microhardness of which is observed already about 200 K [5]. The mechanism of more than one of kamacite, and accordingly more yield plastic deformation in iron meteorites at low tempera- strength. Short-term shock loading up to 25 GPа also tures varies only. Deformation at 300 K occurs by slid- increases the yield strength. The temperature of small ing, and at 4.2 K and 77 K is accompanied by forma- bodies which unlike planetary bodies have no en- tion and development of static twins, i.e. mechanical dogenic activity and an internal thermal flux, is de- twinning as the basic mechanism of deformation in fined by insolation level and depends on a body posi- iron meteorites at low temperatures dominates [6].
  • On the Distribution of the Gibeon Meteorites of South-West Africa Robert Citron

    On the Distribution of the Gibeon Meteorites of South-West Africa Robert Citron

    https://ntrs.nasa.gov/search.jsp?R=19670023688 2020-03-12T11:14:37+00:00Z ON THE DISTRIBUTION OF THE GIBEON METEORITES OF SOUTH-WEST AFRICA ROBERT CITRON L ZOB WYOl AJ.ll13Vd I. 'b Research in Space Science SA0 Special Report No. 238 ON THE DISTRIBUTION OF THE GIBEON METEORITES OF SOUTH-WEST AFRICA Robert C itron March 30, 1967 Smithsonian Institution Astrophysical Observatory Cambridge, Massachusetts, 02138 TABLE OF CONTENTS Sec tion Page BIOGRAPHICAL NOTE ....................... iv ABSTRACT ............................. -v 1 INTRODUCTION ........................... 1 2 GIBEONDISTRIBUTION ...................... 2 3 RECENTLY RECOVERED GIBEON METEORITES ..... 7 3. 1 The Lichtenfels Meteorite .................. 7 3.2 The Haruchas Meteorite ................... 8 3.3 The Donas Meteorite ...................... 9 3.4 The Bethanie Meteorite .................... 10 3.5 The Keetmanshoop Meteorite ................ 10 3. 6 The Kinas Putts Meteorite ................. 11 3. 7 The Kamkas Meteorite .................... 12 4 POSSIBLE IMPACT CRATERS .................. 15 5 ACKNOWLEDGMENTS ....................... 20 6 REFERENCES ............................ 21 Atmendix A WEIGHT LIST OF KNOWN GIBEON METEORITES - - - * A-1 B GIBEON METEORITES IN MUSEUMS .............. B-1 . C PHOTOGRAPHS OF RECENTLY RECOVERED GIBEON METEORITES ............................. C-1 D PHOTOGRAPHS OF METEORITES IN PUBLIC GARDENS, WINDHOEK, SOUTH-WEST AFRICA .............. D-1 ii LIST OF ILLUSTRATIONS Figure Page 1 Map of known Gibeon meteorite distribution . 5 2a Aerial view of Brukkaros crater . 16 2b Ground view of Brukkaros crater . 17 3 Aerial view of Roter Kamm crater . 19 C-1 The Lichtenfels meteorite . C-2 C-2 The Haruchas meteorite . C-2 C-3 The Donas meteorite . C-3 C-4 The Bethanie meteorite. C-3 C-5 The Kinas Putts meteorite . C-4 D-1 Twenty-seven Gibeon meteorites, whose total weight exceeds 10 metric tons, in the Public Gardens at Windhoek, South-West Africa .
  • Research Outputs 1

    Research Outputs 1

    Research outputs 1. Annealing of the seymchan meteorite at the temperature of 700 °C Brusnitsyna, E. V., Muftakhetdinova, R. F., Yakovlev, G. A., Tyutrina, T. V. & Grokhovsky, V. I., 9 Dec 2020, VII International Young Researchers'' Conference - Physics, Technology, Innovations, PTI 2020. Volkovich, V. A., Kashin, I. V., Smirnov, A. A. & Narkhov, E. D. (eds.). American Institute of Physics Inc., 5 p. 060002. (AIP Conference Proceedings; vol. 2313). 2. Structural features of the seymchan meteorite substance after compressing by spherically converging shock waves Muftakhetdinova, R. F., Grokhovsky, V. I., Kuchko, D. P. & Vorobiev, A. V., 9 Dec 2020, VII International Young Researchers'' Conference - Physics, Technology, Innovations, PTI 2020. Volkovich, V. A., Kashin, I. V., Smirnov, A. A. & Narkhov, E. D. (eds.). American Institute of Physics Inc., 6 p. 060012. (AIP Conference Proceedings; vol. 2313). 3. Synthesis of nanostructures on the Chinga meteorite Begunova, A. S., Yakovlev, G. A., Kamalov, R. V., Pankrushina, E. A. & Grokhovsky, V. I., 9 Dec 2020, VII International Young Researchers'' Conference - Physics, Technology, Innovations, PTI 2020. Volkovich, V. A., Kashin, I. V., Smirnov, A. A. & Narkhov, E. D. (eds.). American Institute of Physics Inc., 6 p. 030039. (AIP Conference Proceedings; vol. 2313). 4. Post-impact metamorphism of the Chelyabinsk meteorite in shock experiment Grokhovsky, V. I., Muftakhetdinova, R. F., Yakovlev, G. A., Brusnitsyna, E. V. & Petrova, E. V., 1 Nov 2020, In: Planetary and Space Science. 192, 8 p., 105050. 5. Experimental constraints on the ordinary chondrite shock darkening caused by asteroid collisions Kohout, T., Petrova, E. V., Yakovlev, G. A., Grokhovsky, V. I., Penttila, A., Maturilli, A., Moreau, J.
  • New Unique Pyroxene Pallasite: Northwest Africa 10019 C

    New Unique Pyroxene Pallasite: Northwest Africa 10019 C

    78th Annual Meeting of the Meteoritical Society (2015) 5084.pdf NEW UNIQUE PYROXENE PALLASITE: NORTHWEST AFRICA 10019 C. B. Agee, K. Ziegler, N. Muttik. Institute of Meteoritics and the Department of Earth and Planetary Sciences, University of New Mexico. E-mail: [email protected]. Introduction: Pyroxene pallasites were originally defined by the grouplet of Vermillion and Yamato 8451 [1], which have minor amounts (~1-3 vol%) of pyroxene, with oxygen isotope values that are distinct from the pallasite main group (PMG) and the Eagle Station grouplet (PES). In the meantime, additional pyroxene-bearing pallasites, Zinder, NWA 1911, and Choteau, have been discovered [2,3], however each of these meteorites appears to be unique based on oxygen isotopes and mineralogy -- thus not belonging to the original pyroxene pallasite grouplet. Here we report on yet another unique ungrouped pyroxene pallasite, Northwest Africa 10019, which now brings the total of distinct pyroxene pallasite types – possibly all from different parent bodies – to a total of five. History and Physical Chracteristics: NWA 10019 was purchased by Steve Arnold from Morocco in January 2015 and consisted of one 580 gram fusion crusted individual and 26 grams of several small fusion crusted pieces. Saw cuts and thin slices show angular orange-brown-green, translucent olivines (~50 vol%), the largest 28 mm long, with many smaller (0.5-5 mm) angular grains, some of which are darker colored orthopyroxenes (Fs15.4±0.2Wo1.0±0.2, Fe/Mn=23±1, n=6, ~10 vol %), all set in a matrix of taenite (Fe=72.0±4.0, Ni=27.4±2.4, Co=0.19±0.05 wt%, n=5, ~20 vol%) and kamacite (Fe=93.1±2.0, Ni=6.6±0.2, Co=0.61±0.03 wt%, n=4, ~15 vol %).
  • W Numerze: – Wywiad Z Kustoszem Watykańskiej Kolekcji C.D. – Cz¹stki

    W Numerze: – Wywiad Z Kustoszem Watykańskiej Kolekcji C.D. – Cz¹stki

    KWARTALNIK MI£OŒNIKÓW METEORYTÓW METEORYTMETEORYT Nr 3 (63) Wrzesieñ 2007 ISSN 1642-588X W numerze: – wywiad z kustoszem watykañskiej kolekcji c.d. – cz¹stki ze Stardusta a meteorytry – trawienie meteorytów – utwory sp³ywania na Sikhote-Alinach – pseudometeoryty – konferencja w Tucson METEORYT Od redaktora: kwartalnik dla mi³oœników OpóŸnieniami w wydawaniu kolejnych numerów zaczynamy meteorytów dorównywaæ „Meteorite”, którego sierpniowy numer otrzyma³em Wydawca: w paŸdzierniku. Tym razem g³ówn¹ przyczyn¹ by³y k³opoty z moim Olsztyñskie Planetarium komputerem, ale w koñcowej fazie redagowania okaza³o siê tak¿e, i Obserwatorium Astronomiczne ¿e brak materia³u. Musia³em wiêc poczekaæ na mocno opóŸniony Al. Pi³sudskiego 38 „Meteorite”, z którego dorzuci³em dwa teksty. 10-450 Olsztyn tel. (0-89) 533 4951 Przeskok o jeden numer niezupe³nie siê uda³, a zapowiedzi¹ [email protected] dalszych k³opotów jest mi³y sk¹din¹d fakt, ¿e przep³yw materia³ów zacz¹³ byæ dwukierunkowy. W najnowszym numerze „Meteorite” konto: ukaza³ siê artyku³ Marcina Cima³y o Moss z „Meteorytu” 3/2006, 88 1540 1072 2001 5000 3724 0002 a w kolejnym numerze zapowiedziany jest artyku³ o Morasku BOŒ SA O/Olsztyn z „Meteorytu” 4/2006. W rezultacie jednak bêdzie mniej materia³u do Kwartalnik jest dostêpny g³ównie t³umaczenia i trzeba postaraæ siê o dalsze w³asne teksty. Czy mo¿e ktoœ w prenumeracie. Roczna prenu- merata wynosi w 2007 roku 44 z³. chcia³by coœ napisaæ? Zainteresowanych prosimy o wp³a- Z przyjemnoœci¹ odnotowujê, ¿e nabieraj¹ tempa przygotowania cenie tej kwoty na konto wydawcy do kolejnej konferencji meteorytowej, która planowana jest na 18—20 nie zapominaj¹c o podaniu czytel- nego imienia, nazwiska i adresu do kwietnia 2008 r.
  • Zac Langdon-Pole Art Basel Hong Kong

    Zac Langdon-Pole Art Basel Hong Kong

    Zac Langdon-Pole Art Basel Hong Kong Michael Lett 312 Karangahape Road Cnr K Rd & East St PO Box 68287 Newton Auckland 1145 New Zealand P+ 64 9 309 7848 [email protected] www.michaellett.com Zac Langdon-Pole Passport (Argonauta) (i) 2018 paper nautilus shell, Seymchan meteorite (iron pallasite, landsite: Serbia, Russia) 79 x 25 x 45mm ZL5205 Zac Langdon-Pole Passport (Argonauta) (i) (side view) 2018 paper nautilus shell, Seymchan meteorite (iron pallasite, landsite: Serbia, Russia) 79 x 25 x 45mm ZL5205 Zac Langdon-Pole Passport (Argonauta) (ii) 2018 paper nautilus shell, Sikhote Alin meteorite (iron; coarse octahedrite, landsite: Sikhote Alin mountains, Russia) 103 x 30 x 55mm ZL5209 Zac Langdon-Pole Passport (Argonauta) (ii) (side view) 2018 paper nautilus shell, Sikhote Alin meteorite (iron; coarse octahedrite, landsite: Sikhote Alin mountains, Russia) 103 x 30 x 55mm ZL5209 Zac Langdon-Pole Passport (Argonauta) (iii) (front view and side view) 2018 paper nautilus shell, Nantan meteorite (iron; coarse octahedrite, landsite: Nantan, Peoples Republic of China) 135 x 45 x 95mm ZL5213 Zac Langdon-Pole Passport (Argonauta) (iv) (front view and side view) 2018 paper nautilus shell, Muonionalusta meteorite (iron; fine octahedrite, landsite: Norrbotten, Sweden) 95 x 33 x 65mm ZL5208 Zac Langdon-Pole Passport (Argonauta) (v) 2018 paper nautilus shell, Sericho meteorite (iron pallasite, landsite: Sericho, Kenya) 107 x 33 x 56mm ZL5210 Zac Langdon-Pole Passport (Argonauta) (v) (side view) 2018 paper nautilus shell, Sericho meteorite (iron