Goethite, as microbotryoidal growths on a matrix of the same mineral, very lustrous, and displaying iridescence of very vivid colors, with reddish tones predominating and, to a lesser extent, gold, blue, violet and green.
The specimen comes from the Fermín Clemente collection, whose label we will send to the buyer. It does not come from the best-known locality, Tharsis, but from Rio Tinto.
Cerro Colorado Mine, Rio Tinto Mines, Minas de Riotinto, Comarca Cuenca Minera, Huelva, Andalusia Spain
Specimen size: 5 × 3.3 × 3 cm = 1.97” × 1.30” × 1.18”
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