gray hematite

gray hematite

[¦grā ′hē·mə‚tīt]
(mineralogy)
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References in periodicals archive ?
On Earth, gray hematite commonly forms in lakes and hot springs, but it can also form by volcanic processes.
Observations of Meridiani Planum from orbit suggest that the gray hematite was deposited by a watery source, perhaps an ancient and vast hot spring.
25, 2004, will explore Meridiani Planum, an area with deposits of an iron oxide called gray hematite.