Sample Petrographic Description
| Sample Number | DNG 06004 |
| Newsletter | 30,2 |
| Location | D'Angelo Bluff |
| Field Number | 17787 |
| Dimensions (cm) | 4.2 x 4.0 x 2.0 |
| Weight (g) | 47.44 |
| Original Classification | CM2 Chondrite |
| Mineral Composition (%Fa & %Fs) | |
| Fayalite (mol%): 1-44;Ferrosilite (mol%): 3 | |
| Weathering | |
| B | |
| Fracturing | |
| A/B | |
| Macroscopic Description - Cecilia Satterwhite | |
| This carbonaceous chondrite has 75% fractured, black fusion crust. The exterior surface is vesicular and pitted, some areas are frothy. Areas without fusion crust are black with tiny white/gray specks. The interior is a dark gray to black fine-grained matrix with abundant small white/cream colored inclusions/chondrules. | |
| Thin Section Description (,2) - Tim McCoy, Linda Welzenbach | |
| The section consists of small, minimally-altered chondrules (up to 1 mm), mineral grains and CAIs set in a black matrix; metal and sulfide grains are present. Olivine compositions are Fa1-44, orthopyroxene is Fs3. The meteorite is a CM2 chondrite. | |
| Antarctic Meteorite Images for Sample DNG 06004 | ||||
| Field Photo(s) : | ||||
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| Field photo image(s) courtesy of the ANSMET (ANtarctic Search for METeorites) Program, Case Western Reserve University and the University of Utah | ||||
| Antarctic Meteorite Images for Sample DNG 06004 | ||||
| Lab Photo(s) : | ||||
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| Antarctic Meteorite Images for Sample DNG 06004 | ||||
| Thin Section Photo(s) : | ||||
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| References for Sample DNG06004 | |
| Alexander, C. M. O'D., Bowden, R., Fogel, M. L., Howard, K. T., 2015, Carbonate abundances and isotopic compositions in chondrites. , Meteoritics & Planetary Science, 50 , 810-833 , http://dx.doi.org/10.1111/maps.12410 . | |
| Howard, K. T., Alexander, C. M. O'D., Schrader, D. L., Dyl, K. A., 2015, Classification of hydrous meteorites (CR, CM and C2 ungrouped) by phyllosilicate fraction: PSD-XRD modal mineralogy and planetesimal environments. , Geochimica et Cosmochimica Acta, 149 , 15-Jan-15 , 206-222 , ISSN 0016-7037 , http://dx.doi.org/10.1016/j.gca.2014.10.025 . | |
| Alexander, C.O'D. M. O, Bowden,. R., Fogel, M. L., Howard, K. T., Herd, C. D. K., Nittler, L. R., 2012, The provenances of asteroids, and their contributions to the volatile inventories of the terrestrial planets. , Science, 337(6095) , 2012 , 721-723 . | |
| Rubin, A. E., 2010, Physical properties of chondrules in different chondrite groups: Implications for multiple melting events in dusty environments. , Geochimica et Cosmochimica Acta, 74 Issue 16 , 15-Aug-10 , 4807-4828 , ISSN 0016-7037 , http://dx.doi.org/10.1016/j.gca.2010.05.018 . | |