hematit

hematit

An iron-oxide mineral (Fe₂O₃) that may be the cause of the red color on Mars. Courser-grained gray hematite has the same chemical formula as the red variety, but a different crystalline structure. The deposits of gray hematite found in the Terra Meridiani region of Mars may suggest that water once circulated through the region's rock layers.

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Bransch/domän: Astronomy
Category: Planetary science
Company: PSRD
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