Description
Location: Atlantis Casino Resort, 3800 N. Virginia Street, Reno, NV
Contact: gsn@gsnv.org
GSN REGULAR MEMBERSHIP MEETING – Friday, February 20, 2026
TIME: Drinks @ 6 pm, Dinner @ 6:30 pm, Talk @ 7:15 pm
WHERE: ATLANTIS CASINO RESORT, RENO, NV, Grand Ballroom 5-7
DINNER COST: $60 per person
ONLINE RESERVATIONS CAN BE MADE BELOW.
PLEASE RSVP FOR DINNER NO LATER THAN MONDAY, FEB. 16, 2026.
MEETING SPONSOR: Neilsen Exploration
SPEAKER: Robert Selwood, Crux Geoscience LLC & Lost River Mining
TITLE: The Lost River Rare Metal (Li, Sn, W, F, Ta) Granite Deposit of the Seward Peninsula, NW Alaska – A Major Source of Critical Minerals
ABSTRACT:
The Lost River mineral system, located on the Seward Peninsula, Alaska, is centered on a late Cretaceous, highly evolved composite granite stock intruded into a thick sequence of massive limestone. The deposit formed during the magmatic–hydrothermal transition as the intrusive body cooled and crystallized. Crystal fractionation led to enrichment of incompatible elements in the residual melt, followed by volatile saturation and fluid exsolution that transported and deposited tin, tungsten, lithium, tantalum, fluorite, and beryllium mineralization within greisen, skarn, breccia, and vein systems.
Following four years of renewed exploration by Lost River Mining LLC, this presentation provides an overview of the regional and deposit-scale geology and examines the processes responsible for the concentration, transport, and deposition of metals. Recent mineral resource estimates for Lost River and the neighboring Kougarok deposit highlight this mineral province as a significant U.S. source of critical metals.
Bio:
Rob Selwood is a consulting geologist based in Reno, Nevada. He studied geology at the Camborne School of Mines, UK, and earned an MSc from the University of Nevada, Reno. He has 15 years of experience exploring and developing sediment-hosted copper deposits, low-sulfidation epithermal systems, and geothermal systems worldwide. His work focuses on mapping and modeling fundamental controls on ore deposit formation to help guide mineral exploration.
Please contact Laura Ruud or Lauren Sankovitch at the GSN office for more information: gsn@gsnv.org
Details
02/20/2026 18:00:0002/20/2026 21:00:00America/Los_AngelesGSN Regular Membership Meeting – Friday, February 20th, 2026GSN REGULAR MEMBERSHIP MEETING - Friday, February 20, 2026
TIME: Drinks @ 6 pm, Dinner @ 6:30 pm, Talk @ 7:15 pm
WHERE: ATLANTIS CASINO RESORT, RENO, NV, Grand Ballroom 5-7
DINNER COST: $60 per person
ONLINE RESERVATIONS CAN BE MADE BELOW.
PLEASE RSVP FOR DINNER NO LATER THAN MONDAY, FEB. 16, 2026.
MEETING SPONSOR: Neilsen Exploration
SPEAKER: Robert Selwood, Crux Geoscience LLC & Lost River Mining
TITLE: The Lost River Rare Metal (Li, Sn, W, F, Ta) Granite Deposit of the Seward Peninsula, NW Alaska – A Major Source of Critical Minerals
ABSTRACT: The Lost River mineral system, located on the Seward Peninsula, Alaska, is centered on a late Cretaceous, highly evolved composite granite stock intruded into a thick sequence of massive limestone. The deposit formed during the magmatic–hydrothermal transition as the intrusive body cooled and crystallized. Crystal fractionation led to enrichment of incompatible elements in the residual melt, followed by volatile saturation and fluid exsolution that transported and deposited tin, tungsten, lithium, tantalum, fluorite, and beryllium mineralization within greisen, skarn, breccia, and vein systems. Following four years of renewed exploration by Lost River Mining LLC, this presentation provides an overview of the regional and deposit-scale geology and examines the processes responsible for the concentration, transport, and deposition of metals. Recent mineral resource estimates for Lost River and the neighboring Kougarok deposit highlight this mineral province as a significant U.S. source of critical metals. Bio: Rob Selwood is a consulting geologist based in Reno, Nevada. He studied geology at the Camborne School of Mines, UK, and earned an MSc from the University of Nevada, Reno. He has 15 years of experience exploring and developing sediment-hosted copper deposits, low-sulfidation epithermal systems, and geothermal systems worldwide. His work focuses on mapping and modeling fundamental controls on ore deposit formation to help guide mineral exploration.Please contact Laura Ruud or Lauren Sankovitch at the GSN office for more information: gsn@gsnv.org
[gravityform id="9" title="true" description="true"]Reno, NV
| Event Starts | Event Ends |
| 02/20/2026 | 02/20/2026 |
| All Day Event | |
| 6:00pm | 9:00pm |