Milagro, General Ocampo department, La Rioja Province, Argentina

Hematite, Magnetite

3.4 x 2.7 x 2.4 cm. A complete octahedron of magnetite has been replaced (pseudomorphed) by hematite, retaining the octahedral form of the original magnetite. You can see interesting concentric triangular-shaped terracing on the faces.

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Hematite, Magnetite

Milagro, General Ocampo department, La Rioja Province, Argentina

2.6 x 2.5 x 2.3 cm. Hematite has pseudomorphed a perfectly-formed octahedral crystal of magnetite - with interesting terraced epitaxial faces.

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Hematite, Magnetite

Milagro, General Ocampo department, La Rioja Province, Argentina

3.4 x 2.8 x 2.8 x 2.8 cm, 3.3 x 3.3 x 3.3 cm, 3.1 x 2.8 x 2.8 cm, 2.4 x 2.4 x 2.4 cm. Four examples of sharp, octahedral crystals of magnetite that have been pseudomorphed by hematite, retaining the shape of the original magnetites. Collector Dave Stoudt picked these up during his travels in South America, in 2003.

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Hematite, Magnetite

Milagro, General Ocampo department, La Rioja Province, Argentina

3.6 x 2.9 x 2.6 cm. A sharp and lustrous hematite partially pseudomorphed after an octahedral magnetite crystal from a little-known find in Argentina. This artistic piece has textbook crystal form. As you can see, this crystal has retained a lot of the magnetite, as it easily remains attached to the magnet. Ex. David Stoudt Collection.

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Hematite, Magnetite

Milagro, General Ocampo department, La Rioja Province, Argentina

4 x 4 x 3.8 cm (largest). Four complete octahedrons of magnetite have been replaced (pseudomorphed) by hematite, retaining the octahedral form of the original magnetite. You can see interesting concentric triangular-shaped terracing on the faces.

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