Mars Mineral Spectroscopy Database

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Hydroxide and Oxidic Hydrate Group Minerals

Hydroxide group minerals occur as weathering or alteration products of oxide minerals, and are often formed under oxidizing comnditions. They are likely candiates to be found on the surface of Mars if water was once present there.

The photo to the left is representative of this mineral group; however, it is not the same sample on which spectra listed below were measured.

Ferrihydrite, Icelandic, JB 498

Ferrihydrite, Icelandic, JA499

Ferrihydrite, reduced synthetic, JB 428

Ferrihydrite, reduced synthetic, JB 431

Ferrihydrite, synthetic, JB 409

Ferrihydrite, synthetic, JB 45

Ferrihydrite, synthetic JB46

Ferrihydrite 96214, Smedley's Mine

Ferrihydrite JB 564 Czech Soos-1

Ferrihydrite JB 565 Czech Soos-2

Ferrihydrite, Synthetic, 6nm grain size

Ferrihydrite, Synthetic, 4nm grain size

Ferrihydrite, Synthetic, 2nm grain size

Goethite, Florissant, HMM 119377

Goethite, reduced synthetic, JB 438

Goethite, synthetic JB 54

Goethite, nanophase, A1

Goethite, nanophase, B1

Goethite, nanophase, C1

Goethite, 7nm

Lepidocrocite, synthetic, JB 56

Lepidocrocite, synthetic, JB50

Lepidocrocite, Zuckmantel, HMM 81159

Ferrihydrite, dehydrated JB-JLB-820

Ferrihydrite, dehydrated JB-JLB-821

Ferrihydrite, dehydrated JB-JLB-822

Ferrihydrite, dehydrated JB-JLB-823

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