Paul Benoit and Derek Sears
Cosmochemistry Group
Dept. of Chemistry and Biochemistry
University of Arkansas
Fayetteville, AR 72701
Sample | Class | NTL [krad at 250° C] |
---|---|---|
GRO95517 |
EH3 |
8 ± 2 |
GRA95215 |
H4 |
48.5 ± 0.4 |
GRO95527 |
H4 |
0.4 ± 0.1 |
GRO95541 |
H4 |
1.4 ± 0.1 |
GRA95213 |
H5 |
27.2 ± 0.1 |
GRA95214 |
H5 |
83.5 ± 0.1 |
GRO95519 |
H5 |
3.4 ± 0.1 |
GRO95521 |
H5 |
47.6 ± 0.8 |
GRO95524 |
L5 |
0.1 ± 0.1 |
GRO95537 |
H5 |
3.9 ± 0.1 |
GRO95538 |
H5 |
73 ± 3 |
GRO95507 |
H6 |
32.6 ± 0.3 |
GRO95525 |
H6 |
95.2 ± 0.2 |
GRO95536 |
L3 |
132 ± 6 |
GRO95539 |
L3 |
< 1 |
GRO95502 |
L3 |
< 1 |
GRO95504 |
L3 |
< 1 |
GRO95512 |
L3 |
< 1 |
GRO95546 |
L3.8 |
3.8 ± 0.1 |
GRO95515 |
L4 |
139.8 ± 0.5 |
GRA95200 |
L5 |
39.6 ± 0.1 |
GRO95529 |
L5 |
78.9 ± 0.2 |
GRO95530 |
L5 |
37.2 ± 0.1 |
GRO95540 |
L5 |
0.5 ± 0.1 |
GRO95500 |
L6 |
19.5 ± 0.1 |
GRO95501 |
L6 |
12.0 ± 0.1 |
GRO95514 |
L6 |
15.0 ± 0.3 |
GRO95523 |
L6 |
0.1 ± 0.1 |
Comments: The following comments are based on natural TL data, TL sensitivity, the shape of the induced TL glow curve, classifications, and JSC and Arkansas group sample descriptions.
GRO95502, GRO95504, and GRO95512 were classified petrographically as type 3.5 (AMN 20:2). TL sensitivities of these meteorites are very low (~0.001 relative to Dhajala H3.8) compared to type 3.5 meteorites. These meteorites may be of type 3.0-3.1, or t hey might be highly shocked. Extensive shock features were not reported in the initial description.
GRO95536 is type 3.3.
GRO95546 is confirmed as type 3.8 (AMN 20:2).