Cosmic Dust News
Marc Fries, Cosmic Dust Curator
Volume 5 No. 1 • March 2023
South Pole Water Well (SPWW) Micrometeorite Collection Released!The SPWW collection is comprised of micrometeorites retrieved from a water well melted into the Antarctic ice at Amundsen-Scott South Pole Station. The micrometeorites were collected as part of a PI-led investigation encompassing two expeditions in 1995 and 2000. The collection includes over 6,900 micrometeorites as well as the specialized hardware used to collect them. Descriptions of the collection efforts can be found here and here, and an overall description of the micrometeorites is found here. A more expansive list of references can be obtained on request from the curator. The SPWW collection of micrometeorites has been accessioned by NASA into its broader Cosmic Dust Collection. Now that we have completed the sample catalog for the SPWW collection, we are ready to start accepting sample requests for these samples as of 8 weeks after the release of this newsletter! The SPWW collection description and database can be found on the Cosmic Dust website. Most of the micrometeorites we received have been mounted in epoxy disks, polished to expose their interiors, and imaged via SEM. Descriptions and SEM images of these micrometeorites are available in the database. Other samples in the SPWW collection include bulk sample with the micrometeorites removed and unprocessed particulate samples from the water well floor.