Other
Scientific paper
Feb 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010p%26ss...58..421m&link_type=abstract
Planetary and Space Science, Volume 58, Issue 3, p. 421-426.
Other
5
Scientific paper
The Archimedean glass bead method for determining meteorite bulk density has become widely applied. We used well characterized, zero-porosity quartz and topaz samples to determine the systematic error in the glass bead method to support bulk density measurements of meteorites for our ongoing meteorite survey. Systematic error varies according to bead size, container size and settling method, but in all cases is less than 3%, and generally less than 2%. While measurements using larger containers (above 150 cm3) exhibit no discernible systematic error but much reduced precision, higher precision measurements with smaller containers do exhibit systematic error. For a 77 cm3 container using 40-80 μm diameter beads, the systematic error is effectively eliminated within measurement uncertainties when a “secured shake” settling method is employed in which the container is held securely to the shake platform during a 5 s period of vigorous shaking. For larger 700-800 μm diameter beads using the same method, bulk volumes are uniformly overestimated by 2%. Other settling methods exhibit sample-volume-dependent biases. For all methods, reliability of measurement is severely reduced for samples below ˜5 cm3 (10-15 g for typical meteorites), providing a lower-limit selection criterion for measurement of meteoritical samples.
Britt Daniel T.
Consolmagno J. Guy J. S.
Macke J. Robert J. S.
No associations
LandOfFree
Analysis of systematic error in “bead method” measurements of meteorite bulk volume and density does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Analysis of systematic error in “bead method” measurements of meteorite bulk volume and density, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analysis of systematic error in “bead method” measurements of meteorite bulk volume and density will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1106684