Fergusonite-(Y) Value Guide

Fergusonite-(Y) is a highly sought-after rare-earth oxide mineral prized for its complex chemical composition and historical significance dating back to its 1826 discovery. These specific 2020-2024 Canadian specimens are collectible due to their distinct brownish-black prismatic crystal structures and their role as a primary source of Yttrium.

What Is Fergusonite-(Y) Worth?

The typical price range for Fergusonite-(Y) is $225 - $250 based on recent sales. However, values can vary depending on the item's condition, rarity, and other factors such as:

• Crystal clarity and the sharpness of the prismatic edges significantly impact the $225-$250 price range.
• The size and aesthetic placement of the Fergusonite crystal within its host matrix.
• The concentration of Yttrium and Niobium, which are key chemical markers for high-quality specimens.
• Overall specimen stability, especially given the potential for metamictization due to radioactive content.

How to Identify Fergusonite-(Y)?

• Look for the characteristic brownish-black color and prismatic crystal habit typical of the Fergusonite series.
• Verify the presence of a matrix, as these Canadian specimens are typically found embedded rather than as loose crystals.
• Check for slight radioactivity using a Geiger counter, as the mineral often contains trace amounts of Thorium.
• Confirm the glassy to sub-metallic luster on fresh fracture surfaces which distinguishes it from common iron oxides.

History of Fergusonite-(Y)

First described in 1826 by Wilhelm von Haidinger and named after Robert Ferguson of Raith, a Scottish politician and mineral collector. This mineral is a primary source of Yttrium and often contains radioactive elements like Thorium, making it a subject of intense study in both mineralogy and nuclear science.