GeoSep Services (GSS) is a locally owned small business, staffed by a small group of loyal employees. We are dedicated to providing high-quality mineral separations along with apatite and zircon fission track+UPb analyses to support the international geochronology/thermochronology community.
GSS is located in Moscow, Idaho, within the beautiful Palouse region of Idaho and Washington, USA.
We are celebrating ten years of operation as of January 2025!! See 10-year update.
We specialize in apatite fission track (AFT) analysis, zircon fission track (ZFT) analysis, zircon UPb, and mineral separations.
Update February 2025:
Great news! We have tweaked our procedures, and turnaround times are even faster! Now is a great time to send GSS your samples! Please contact Paul or Jim with questions.
Thank you to all our clients and colleagues for your support.
Note: for an additional fee of $100, we can provide pyrite (sulfide) removal/cleanup of zircon fractions (DIM sink) if requested.
(See Services)
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Current, upcoming, and prior events:
We may attend the Geological Society of America (GSA) annual GSA Connects meeting (San Antonio, TX, October 2025).
GSS attended prior annual Geological Society of America (GSA) Connects meetings. Most recent: Anaheim in September 2024; Pittsburgh in October 2023; Denver in October 2022; Portland in October 2021.
GSS attended prior Thermo meetings. Most recent: 2023 in Riva del Garda, Italy (September; Thermo2023 link); Thermo"2020" in Santa Fe, NM in September 2021 (thermo2021.us)
We appreciate these opportunities to meet our current and prospective clients and colleagues, and to support advancements in the geochronology/thermochronology community.
Check out our photos from some of our conference/meeting trips.
See some GSS conference duck, hat, and string bag adventures!
Note: If you have concerns about our website or links, please contact the webmaster.