Aqueous Alteration on Asteroids: Linking the Mineralogy and Spectroscopy of CM and CI Chondrites

M.M. McAdam, J.M. Sunshine, K.T. Howard, T.M. McCoy Icarus DOI: 10.1016/j.icarus.2014.09.041 LINK Abstract CM/CI meteorites range in degree of aqueous alteration suggesting differences in initially accreted materials including water ice and possible spatial heterogeneities within…

Where Did the Ureilite Parent Body Accrete? Constraints from Chemical and Isotopic Compositions

Cyrena Goodrich, David P. O’Brien Abstract: Almahata Sitta and other polymict ureilites contain a remarkable diversity of materials, including EH, EL, OC, R- and CB chondrites, in addition to the dominant ureilitic material [1]. These…

The ancient heritage of water ice in the solar system

L. Ilsedore Cleeves, Edwin A. Bergin, Conel M. O’D. Alexander, Fujun Du, Dawn Graninger, Karin I. Öberg, Tim J. Harries LINK Science 26 September 2014: Vol. 345 no. 6204 pp. 1590-1593 DOI: 10.1126/science.1258055 “Abstract Identifying…

Seismo-ionospheric effects associated with ‘Chelyabinsk’ meteorite during the first 25 minutes after its fall

Oleg I.Berngardt arXiv:1409.5927 (submitted on 21 Sep 2014) PDF LINK LINK (abstract) This paper presents the properties of ionospheric irregularities elongated with Earth magnetic field during the first 25 minutes after the fall of the…

NASA astrophysician Nikolaj Gorkavyj about shopping mall in form of Chelyabinsk meteoroid and smoke trail

The NASA astrophysician Nikolaj Gorkavyj from Chelyabinsk defends his idea to build a shopping mall in the form of the Chelyabinsk meteoroid and smoke trail, designed by Elena Markina. LINK LINK (Original) photo 1 photo…

The paradox between low shock-stage and evidence for compaction in CM carbonaceous chondrites explained by multiple low-intensity impacts

Paula Lindgren, Romy D. Hanna, Katherine J. Dobson, Tim Tomkinson, Martin R. Lee Geochimica et Cosmochimica Acta DOI: 10.1016/j.gca.2014.09.014 (in press) Available online 18 September 2014 LINK

Recent multi-kiloton impact events: are they truly random?

C. de la Fuente Marcos, R. de la Fuente Marcos arXiv:1409.0452 revised 16 Sept 2014 ; Printed 17 September 2014 PDF LINK LINK It is customarily assumed that Earth-striking meteoroids are completely random, and that…

Painted Stone: Asteroids in the Sloan Digital Sky Survey, by Alex Parker

VIDEO (FULL HD) LINK This animation shows the orbital motions of over 100,000 of the asteroids observed by the Sloan Digital Sky Survey (SDSS), with colors illustrating the compositional diversity measured by the SDSS five-color…

The elemental composition of the Sun I. The intermediate mass elements Na to Ca

Pat Scott, Nicolas Grevesse, Martin Asplund, A. Jacques Sauval, Karin Lind, Yoichi Takeda, Remo Collet, Regner Trampedach, Wolfgang Hayek PDF LINK LINK The elemental composition of the Sun II. The iron group elements Sc to…

Defining the Flora Family: Orbital Properties, Reflectance Properties and Age

Melissa J. Dykhuis, Lawrence Molnar, Samuel J. Van Kooten, Richard Greenberg Icarus Available online 16 September 2014 LINK

MetSoc2018 – 81st Annual Meeting of the Meteoritical Society in Moscow

The 81st Annual Meeting of the Meteoritical Society will be held in Moscow. It will be co-organized by the Ural Federal University (UrFU) LINK LINK UPDATE (5 August 2017)

Native metal of the Chelyabinsk meteorite

V. E. Roshchin, Yu. N. Goikhenberg, D. M. Galimov Russian Metallurgy (Metally) May 2014, Volume 2014, Issue 5, pp 419-425 LINK Abstract The so-called native metal of the Chelyabinsk meteorite consists of relatively large particles…

Wolcott officially registered in the Meteoritical Bulletin Database

Wolcott officially registered in the Meteoritical Bulletin Database LINK Wolcott        41°36.452’N, 73°0.742’W Connecticut, United States Fell: 19 April 2013 Classification: Ordinary chondrite (L5) History: Shortly after 10 PM on 19 April 2013, a loud boom was heard…

Samarium–neodymium chronology and rubidium–strontium systematics of an Allende calcium–aluminum-rich inclusion with implications for 146Sm half-life

N.E. Marks, L.E. Borg, I.D. Hutcheon, B. Jacobsen, R.N. Clayton Earth and Planetary Science Letters Volume 405, 1 November 2014, Pages 15–24 DOI: 10.1016/j.epsl.2014.08.017 Available online 29 August 2014 LINK

Nucleosynthetic W isotope anomalies and the Hf–W chronometry of Ca–Al-rich inclusions

Thomas S. Kruijer, Thorsten Kleine, Mario Fischer-Gödde, Christoph Burkhardt, Rainer Wieler Earth and Planetary Science Letters 403,317–327. DOI: 10.1016/j.epsl.2014.07.003 LINK

Aragonite, breunnerite, calcite and dolomite in the CM carbonaceous chondrites: High fidelity recorders of progressive parent body aqueous alteration

Martin R. Lee, Paula Lindgren, Mahmood R. Sofe Geochimica et Cosmochimica Acta Available online 28 August 2014 LINK

Chondrule size and related physical properties: a compilation and evaluation of current data across all meteorite groups

Jon M. Friedrich, Michael K. Weisberg, Denton S. Ebel, Alison E. Biltz, Bernadette M. Corbett, Ivan V. Iotzov, Wajiha S. Khan, Matthew D. Wolman Earth and Planetary Astrophysics arXiv:1408.6581 Submitted on 27 Aug 2014 PDF…

Collision history written in rock

Nature 512, 350 (28 August 2014) doi:10.1038/512350c LINK

Sequential analysis of carbonaceous materials in Hayabusa-returned samples for the determination of their origin

Masayuki Uesugi, Hiroshi Naraoka, Motoo Ito, Hikaru Yabuta, Fumio Kitajima, Yoshinori Takano, Hajime Mita, Ichiro Ohnishi, Yoko Kebukawa, Toru Yada, Yuzuru Karouji, Yukihiro Ishibashi, Takaaki Okada and Masanao Abe Earth, Planets and Space 2014, 66:102…

Chelyabinsk meteorite included as symbol at a bronze sculpture

Chelyabinsk meteorite included as symbol at a bronze sculpture covering the history of the city of Chelyabinsk The Finnish sculptor Rafael Saifulin has designed a 3.5 meter high and wide sculpture that might be erected…

Micrometer-scale U-Pb age domains in eucrite zircons, impact re-setting, and the thermal history of the HED parent body

M.D. Hopkins, S.J. Mojzsis, W.F. Bottke, O. Abramov Icarus, available online 23 August 2014 LINK

The Case of the Missing Ceres Family

Andrew S. Rivkin Erik Asphaug, William F. Bottke Icarus DOI: 10.1016/j.icarus.2014.08.007 available online 23 August 2014 LINK

Solar system chemical abundances corrected for systematics

Guillermo Gonzalez MNRAS (September 1, 2014) 443 (1): L99-L103. doi: 10.1093/mnrasl/slu083 First published online July 10, 2014 LINK PDF-LINK It has been assumed that CI chondrite meteorites are the least affected by fractionation processes, given…

The Chelyabinsk main mass today

Video: Consigliori

A critical analysis of shock models for chondrule formation

Sebastian M. Stammler, Cornelis P. Dullemond   Icarus, Volume 242, 1 November 2014, Pages 1–10 DOI: 10.1016/j.icarus.2014.07.024 Available online 1 August 2014 LINK

Chelyabinsk triptych completed

After one year the Ural painter Albert Rastjapi / Альберт Растяпи has completed his Chelyabinsk triptych LEFT PANEL CENTRAL PANEL RIGHT PANEL LINK (Original) English machine translation: LINK

Records of the Moon-forming impact and the 470 Ma disruption of the L chondrite parent body in the asteroid belt from U-Pb apatite ages of Novato (L6)

Yin, Q.-Z., Zhou, Q., Li, Q.-L., Li, X.-H., Liu, Y., Tang, G.-Q., Krot, A. N. and Jenniskens, P. (2014) Meteoritics & Planetary Science. doi: 10.1111/maps.1234 LINK Novato, a newly observed fall in the San Francisco…

More chips off of Asteroid (4) Vesta: characterization of eight Vestoids and their HED meteorite analogs

Paul S. Hardersen, Vishnu Reddy, Rachel Roberts, Amy Mainzer Earth and Planetary Astrophysics, arXiv:1408.2731 Icarus, accepted for publication, August 12, 2014 PDF-LINK

Chromium Valences in Ureilite Olivine and Implications for Ureilite Petrogenesis

Goodrich CA, Sutton SR, Wirick S and Jercinovic MJ (in press) Geochimica et Cosmochimica Acta Volume 122, 1 December 2013, Pages 280–305 [doi:10.1016/j.gca.2013.08.003] LINK

No nebular magnetization in the Allende CV carbonaceous chondrite

R.R. Fu, E.A. Lima, B.P. Weiss Earth and Planetary Science Letters Volume 404, 15 October 2014, Pages 54–66 DOI: 10.1016/j.epsl.2014.07.014 LINK

ALMA Confirms Comets Forge Organic Molecules in Their Dusty Atmospheres

LINK Nature 512, 234–235 (21 August 2014) doi:10.1038/512234d Published online 20 August 2014 Comets contain some of the oldest materials in the Solar System. Using the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile, Martin Cordiner…