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] |
---|---|---|
GRO 95535 | HOW | 11±1 |
QUE 94500 | H5 | 36.0±0.3 |
GRO 95544 | L3 | 1 |
GRO 95545 | L3 | 1 |
QUE 94473 | L5 | 16.0±0.1 |
QUE 94477 | L5 | 1.9±0.2 |
QUE 94714 | L5 | 64.8±0.1 |
QUE 94716 | L5 | 4.2±0.2 |
QUE 94623 | L6 | 4.4±0.1 |
QUE 94719 | L6 | >21.4±0.1 |
The quoted uncertainties are the standard deviations shown by replicate measurements on a single aliquot.
COMMENTS: The following comments are based on natural TL data, TL sensitivity, the shape of the induced glow curve, classifications, and JSC and Arkansas group sample descriptions.
GRO 95544 and GRO 95545 (L3) have very low induced TL sensitivities (0.003 and 0.006 relative to Dhajala H3.8, respectively) and are either type 3.1 or are highly shocked.
GRO 95535 (HOW) has low induced TL sensitivity (0.17+-0.02 relative to Dhajala H3.8) compared to most howardites, perhaps indicative that it is rich in diogenitic material (GCA 55, 3831-3844).
1. Pairings (Confirmations of pairings):
2. Pairings suggested by TL data: