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One sample returned, called '74220', is classified as high titanium 'orange glass soil' of volcanic origin. It was: 'Taken from deep trench from Station 4, on rim of 120 meter Shorty crater'.
Now, American scientists working from funding provided by NASA, used state-of-the-art ion microprobe instruments to analyze this lunar sample.
And, in the process they measured water within it.
They state in a paper published in Science magazine: "The lunar melt inclusions contain 615 to 1410 ppm [parts per million] water, and high correlated amounts of fluorine (50 to 78 ppm), sulfur (612 to 877 ppm) and chlorine (1.5 to 3.0 ppm)."
And, "These volatile contents are very similar to primitive terrestrial mid-ocean ridge basalts and indicate that some parts of the lunar interior contain as much water as Earth's upper mantle."
Page two concludes.
