Sample Petrographic Description
Sample Number | MET 01183 |
Newsletter | 27,1 |
Location | Meteorite Hills |
Field Number | 13054 |
Dimensions (cm) | 1.2 x 0.8 x 0.3 |
Weight (g) | 1.40 |
Original Classification | EH3 Chondrite |
Mineral Composition (%Fa & %Fs) | |
Ferrosilite (mol%): 1-2 | |
Weathering | |
B/C | |
Fracturing | |
A/B | |
Macroscopic Description - Cecilia Satterwhite | |
80% of the exterior has brown fusion crust with oxidation. Interior is dark gray to black with metal and oxidation visible. | |
Thin Section Description (,2) - Linda Welzenbach, Tim McCoy | |
The section shows an aggregate of small chondrules (up to 1 mm), abundant chondrule fragments, and pyroxene grains in a matrix of about 30% metal and sulfide. Several chondrules contain olivine. Weathering is moderate, with staining of enstatite grains and heavy alteration of metal and sulfides. Microprobe analyses show the olivine is Fa1 , orthopyroxene is Fs1-2 and metal contains 3.1 wt.% Si. The meteorite is an EH3 chondrite. |
References for Sample MET01183 | |
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. |