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Beardsley vs. Faith: physical diversity among H5 chondrites |
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| Authors: | Marek Z&#x;bik Bruno Lang |
| Institution: | aDepartment of Geology, Warsaw University, Z?wirki i Wigury 93, 02-089 Warsaw Poland bDepartment of Chemistry, Warsaw University, Z?wirki i Wigury 101, 02-089 Warsaw Poland |
| Abstract: | The microstructure and some physico-mechanical properties of Beardsley and Faith, both H5 chondrites, were compared. Although the bulk sample porosities are respectively 9.1% and 14.5%, suggesting lower consolidation of Faith, the effective porosities are 5.63% and 1.79%—much higher for Beardsley. The material of Faith, characterized by vugs, vesicles and closed channels—abundant but all sized below 0.01 μm—is of higher strength than that of Beardsley, where joints, fissures, open channels and microcracks are sized from 0.1 to 10 μm. The higher elastic properties of Faith are shown by the velocity of the compressional wave of 6.66 km s?1 against that of 5.12 km s?1 for Beardsley. An example of physical diversity among chondrites to the same chemical-petrologic type is therefore demonstrated. |
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