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

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 specialize in apatite fission track (AFT) analysis, zircon fission track (ZFT) analysis, zircon UPb, and mineral separations. Please note: as of April 2020, for an additional fee, we can provide pyrite (sulfide) removal/cleanup of zircon fractions (DIM sink) if requested.
(See Services)

Coronavirus (COVID-19) Update, June 10, 2021:

Our facility operations and analytical data collection are mostly back to "normal", with enhanced cleaning, along with masks and distancing as necessary.

Thank you to all our clients and colleagues for your support.


Coronavirus restrictions have largely been lifted in the USA, so "normal" operations have resumed. GSS plans to participate in person at both the upcoming Thermo2021 in Santa Fe, NM in September (thermo2021.us), and the annual Geological Society of America (GSA) meeting in October in Portland, OR. We look forward to these upcoming events.

We appreciate these opportunities to meet our current and prospective clients and colleagues, and to support the advancements in the geochronology/thermochronology community. Check out our pictures from some of our conference/meeting trips.