Origin: Eagle Mine, Gilman Mining District, Colorado, USA
A striking and highly collectible Siderite on iridescent Sphalerite specimen from the historic Eagle Mine in the Gilman Mining District of Colorado.
This beautiful piece features attractive Siderite crystals perched across lustrous Sphalerite, creating a wonderful contrast in crystal habit, texture, and color. The Sphalerite displays an eye-catching iridescent metallic sheen, producing flashes of color as the specimen is viewed under different lighting and from different angles.
The combination of the more defined Siderite crystals with the shimmering Sphalerite creates excellent depth and visual interest. Its natural composition gives the specimen a classic old-mine aesthetic while the iridescence adds an especially vibrant character.
The Eagle Mine at Gilman is a celebrated Colorado mineral locality known for producing fine specimens of Sphalerite and associated minerals. Examples from this historic mining district are sought after by collectors of classic American minerals and Colorado localities.
A beautiful combination specimen with excellent contrast, colorful iridescence, and historic locality appeal—a fantastic addition to any collection of Colorado or classic American minerals.
Highlights:
Lustrous iridescent Sphalerite
Excellent mineral and textural contrast
Colorful metallic flashes under light
Classic Eagle Mine specimen
Historic Gilman Mining District locality
Highly collectible Colorado mineral specimen
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