Twannberg 3.41g


Out of stock

  • Meteorite Type: Iron, IIG
  • Weight: 3.41 grams
  • Approximate Measurements: 22 mm x 21 mm x 1 mm
  • Additional Information: Full slice with great shape

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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 3.41 g


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