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Earthly rocks point way to water hidden on Mars
A combination of a once-debunked 19th-century identification of a water-carrying iron mineral and the fact that these rocks are extremely common on Earth, suggests the existence of a substantial water reservoir on Mars, according to a team of geoscientists.
“One of my student’s experiments was to crystalize hematite,” said Peter J. Heaney, professor of geosciences, Penn State. “She came up with an iron-poor compound, so I went to Google Scholar and found two papers from the 1840s where German mineralogists, using wet chemistry, proposed iron-poor versions of hematite that contained water.” ....

United States , August Breithaupt , Frederick Augustus Genth , Peterj Eng , Si Athena Chen , Joannee Stubbs , Peterj Heaney , Rudolf Hermann , Timothyb Fischer , Goddard Space Flight Center , National Science Foundation , Us Department Of Energy , Smithsonian Institution , University Of Chicago , James Franck Institute , Consortium For Advanced Radiation Sources , Google Scholar , Athena Chen , Penn State , Red Planet , Advanced Radiation Sources , ஒன்றுபட்டது மாநிலங்களில் , ருடால்ப் ஹெர்மன் , கோடார்ட் இடம் விமானம் மையம் , தேசிய அறிவியல் அடித்தளம் , எங்களுக்கு துறை ஆஃப் ஆற்றல் ,