HiPOD: 16 January 2019
Light-Toned Material and Rough Terrain along Noctis Labyrinthus Pit

Gypsum in Noctis Labyrinthus
Gypsum is a common mineral on Earth that forms in the presence of water, and appears here to be partially covered by darker material along a sloped surface in a trough of Noctis Labyrinthus. Because the gypsum occurs along a slope and it has a patchy occurrence, it probably didn't form as an evaporite but it could be from volcanic vapors or groundwater at this location.

ID: ESP_016120_1730
date: 3 January 2010
altitude: 254 km

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Black & white is less than 5 km across; enhanced color is less than 1 km