Cubic Pyrite Crystal on Natural Marl Matrix from Rioja Spain — Pyrite Cube
VictoriaMine, Navajún, La Rioja, Spain
Pyritesfrom Spain are some of the most desired and distinguished for the species. Thecubic Pyrite crystal specimens from Navajun are immediately recognizable byvirtually all mineral collectors for their incredible consistency of form.
Thisis a single Pyrite cube perfectly perched on a marlstone matrix. The cubedcrystal has nice mirror-like faces with great color and luster. It iswell-formed and comes from the top locality for cubic Pyrites in the world. Thecubic crystal itself measures 0.84 inches (21.4 mm) on edge. The completespecimen measures 1.79 x 1.74 x 1.61 inches.
Thepyrites of Navajún were formed within the sediments of a large delta thatcovered the Cameros Sierra during the Mesozoic era at the end of the JurassicPeriod approximately 120 million years ago, and nowhere else on earth is thisiron sulfide mineral found in such beautifully regular cubic crystal form.

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