Samarskite-(Y) — Platte County, Jefferson County, Colorado, USA

Please note: This item is an export restricted specimen and requires authorization from the CNSC to export outside of Canada. International customers please see the U & Th Mineral Ordering section link at the bottom of the main page for more information.

This Samarskite-(Y) specimen originates from the classic occurrences in Platte/Jefferson County, Colorado—well-known among collectors for producing robust, high-quality samarskite crystals enriched in yttrium and other rare-earth elements. Its deep black coloration, substantial density, and naturally blocky habit are hallmark traits of the species. This piece offers impressive mass and excellent mineralogical integrity, making it suitable for collectors building out an REE suite or those drawn to heavy, complex niobate minerals.

Colorado samarskite has become increasingly difficult to obtain in recent years, especially in well-preserved, unaltered form. The provenance adds significant value, as these localities represent some of the earliest studied American occurrences of REE-bearing niobate minerals. This specimen is ideal for both display and scientific reference, embodying the rugged mineralogy of Colorado’s historic pegmatite fields.

Approx. specimen weight: 8.67 grams

Approx. specimen activity on an SE International Ranger EXP: 2 000 CPM