GeoSep Services (GSS) is a small business dedicated to providing high-quality mineral separations and additional apatite and zircon analyses to support the international geochronology/thermochronology community.

GSS is located in Moscow, Idaho, within the beautiful Palouse region of Idaho and Washington, USA.


Upcoming Price Increase:
Our analytical prices must increase slightly effective September 2017 to partially offset higher equipment usage rates charged to GSS. Contact us soon if you want to lock in some analyses at the current prices. Rates for mineral separations will not change at this time.


We hope to see you at GSA2017 (October, Seattle) or the AGU Fall Meeting (December, New Orleans).


We had so much fun at Thermo2016 in Maresias, São Paulo, Brazil! Check out our pictures. We can't wait to see what Thermo2018 in Germany has to offer us and the thermochronology community!