76th Annual Meteoritical Society Meeting (2013) sess605.pdf

Thursday, August 1, 2013 POSTER SESSION II: 7:00 p.m. Gallery at Enterprise Square

Holstein J. L. Schmitz B. Heck P. R. Alteration of Chondrites on the Sea Floor: Mezö-Madaras (L3.7) [#5133] We quantify abundances and elemental compositions of acid-resistant minerals in unequilibrated L Mezö-Madaras. The results from this study will serve as a proxy to classify extraterrestrial minerals found in sediments and fossil .

Munayco P. Munayco J. Avillez R. R. Valenzuela M. Antonello L. L. Rochette P. Gattacceca J. Scorzelli R. B. Implications of Weathering Processes of Ordinary Chondrites from Different Areas of the Atacama Desert: Mössbauer Spectroscopy and X-Ray Diffraction Studies [#5077] In this work we study the implications of weathering processes of ordinary chondrites from different areas of the Atacama Desert by Mössbauer spectroscopy and X-ray diffraction techniques.

Szurgot M. Adamus A. Wach R. A. Estimation of Fusion Crust Temperature of Sołtmany by Troilite Thermometry [#5033] Fusion crust relict temperature of Sołtmany meteorite has been estimated by troilite thermometry.

Wach R. A. Adamus A. Szurgot M. Specific Heat Capacity of Sołtmany and NWA 4560 Meteorites [#5017] Specific heat capacity of Sołtmany and NWA 4560 chondrites has been determined by DSC technique. Effect of temperature on heat capacity is presented.

Szurgot M. Adamus A. Wach R. A. Troilite Cosmothermometer in Sołtmany Meteorite [#5004] Relict temperature in Sołtmany chondrite has been determined by DSC technique. Effect of temperature and time of heat treatment on alpha/beta phase transformation in troilite is presented.

Łuszczek K. Przylibski T. A. Resources of Selected Metals in Parent Bodies of Ordinary Chondrites [#5075] Certain metals in OC exceed mean content of these metals in the Earth’s crust. Content of Fe and Ni in OC is even higher than in Earth’s deposits. Parent bodies of OC, can be regarded as Fe-Ni deposits, while accompanying ores are Mn, Cr, Co, Cu, Ag, Au.

Armstrong K. Ruzicka A. Survey of Large, Igneous-Textured Inclusions in O-Chondrites [#5278] 4% of O chondrites contain large, igneous-textured inclusions, the origins of which are poorly understood. Inclusions from several O chondrites have been examined in order to better understand their relationships to other early solar system material.

Jacobsen B. Matzel J. E. Doyle P. M. Krot A. N. Hutcheon I. D. Telus M. New Constraints on the Timing of Fayalite Formation in Unequilibrated Ordinary Chondrites [#5348] We present new Mn-Cr age calculations for fayalite formation in unequilibrated ordinary chondrites. The calculations are based on newly determined relative ion yields for Mn and Cr in ferroan olivine.

Menard J. M. Caron B. Jambon A. Michel A. Villemant B. Halogens in CM Chondrites [#5012] We set up an extraction line of halogens (fluorine, chlorine) by pyrohydrolysis with 50 mg of rock. We analyzed 7 CM2 chondrites found in Antarctica and found that the Cl content of meteorites with an intact fusion crust is higher than those without.

76th Annual Meteoritical Society Meeting (2013) sess605.pdf

Abreu N. M. Two Dimensional Distribution of Shock Metamorphic Features in CR2 GRA 06100 [#5271] Compositional heterogeneities were correlated with mineralogical markers (T-driven crystallographic transitions, thermal decomposition, extent of solid solutions) to determine the scale of T heterogeneity in extensively altered CR2 GRA 06100.

Tachibana S. Nagahara H. Ozawa K. Hydration of Amorphous Magnesium Silicates — Experimental Study [#5354] We investigate hydration kinetics of amorphous magnesium silicates in the presence of water vapor.

Cerón Loayza M. L. Bravo Cabrejos J. A. Characterization of the Carancas-Puno Meteorite by Techniques Physics [#5355] We report the results of the study of a meteorite that impacted an inhabited zone in the neighborhood of the town of Carancas, Puno Region.

Kuehner S. M. Irving A. J. Ziegler K. Rumble D. Hupe G. Mineralogy and Oxygen Isotopic Composition of Northwest Africa 7822: A Unique Dunitic with Affinities to the Eagle Station Grouplet and/or the CV Chondrite [#5269] Dunite NWA 7822 provides additional evidence for achondritic mantles within parent bodies.

Nuevo M. Sandford S. A. Flynn G. J. Wirick S. Mid-Infrared Study of Stones from the Sutter’s Mill Meteorite [#5139] This work presents a mid-infrared study of four stones from the Sutter’s Mill meteorite (SM2, SM12, SM20, and SM30) using two independent FTIR microscopes in the 4000–650 cm–1 range.

Hopp J. Trieloff M. Ott U. I-Xe Chronology of Enstatite Chondrites [#5098] We report new I-Xe age data for EL and EH chondrites. The EL chondrites are ca.2.5–5 Ma younger, the EH chondrites are ca. 0.9 to 7.8 Ma younger than Shallowater meteorite. Ages appear influenced by both impact events and metamorphic cooling.