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.

Note: for an additional fee, we can provide pyrite (sulfide) removal/cleanup of zircon fractions (DIM sink) if requested.
(See Services)

Update, May 2022:

Coronavirus restrictions have largely been lifted in the USA. GSS provides all usual services (facility operations and analytical data collection). However, our turnaround times are significantly longer due to our current workload. Please contact Paul or Jim with questions.

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

Upcoming and prior events:

GSS plans to participate in person at the annual Geological Society of America (GSA) meeting in October (Denver in 2022).

In 2021, we attended Thermo"2020" in Santa Fe, NM in September (, and the GSA meeting in October in Portland, OR.

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.