GSS Lab Provides Fission Track, UPb, and Mineral Separation Services

GeoSep Services (GSS) is a small business 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 specialize in apatite fission track (AFT) analysis, zircon fission track (ZFT) analysis, zircon UPb, and mineral separations.
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Note: Effective January 2019, GSS has made slight increases to the rates for mineral separations; this is the first increase in separation prices since we started GSS in early 2015.


In 2018 we attended three conferences: Thermo2018 in Quedlinburg, Germany;  GSA in Indianapolis; and AGU in Washington, DC. We're grateful for these opportunities to meet our current and prospective clients, as well as support the advancements in the geochronology/thermochronology community. Check out our pictures from some of our trips!