- Meteorite Type: Iron, IIG
- Weight: 0.4 grams
- Approximate Measurements: 13 mm x 7 mm x 1 mm
Twannberg 0.4g
$45.00
1 in stock
1 in stock
Description
Upon study, Twannberg was classified as a IIG. This rare group has only six meteorites in its class. As stated in a study conducted by John T. Wasson, “The members of this group have low-Ni [Nickel] contents in the metal and large amounts of coarse schreibersite ((Fe,Ni)3P); their bulk P [Phosphorus] contents are 17–21 mg/g, the highest known in iron meteorites. Their S [Sulfur] contents are exceptionally low, ranging from 0.2 to 2 mg/g. We report neutron-activation-analysis data for metal samples; the data generally show smooth trends on element-Au [Gold] diagrams. The low Ir [Iridium] and high Au contents suggest formation during the late crystallization of a magma.”
Additional information
| Weight | 0.4 g |
|---|
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