Scientists have found a mineral in lunar rocks that suggests there was a lot more water in the Moon’s crust than previously thought. The mineral in question is apatite, the most common phosphate, which is also found in our bones and teeth. The mineral contains volatile elements in its structure and tends to form in the presence of water.
A lot of our understanding of the Moon’s geology comes from the rocks collected by the Apollo mission. Those samples represent only a tiny fraction of the geology of the Moon and historically, painted a picture of it as dry, lacking in volatiles. Meteorites coming from our satellite have provided a different view and so has re-analysis of the Apollo sample.
Lead author of the study Dr Tara Hayden discovered that meteorite Arabian Peninsula 007 (discovered in Saudi Arabia in 2015) was from
“I was so lucky the meteorite not only came from the Moon but remarkably, featured chemistry so vital to our understanding about lunar water-bearing minerals,” Hayden said in a
The meteorite is a piece of lunar crust that broke apart following an impact around
“The discovery of apatite in the Moon’s early crust for the first time is incredibly exciting—as we can finally start to piece together this unknown stage of lunar history. We find the Moon’s early crust was richer in water than we expected, and its volatile stable isotopes reveal an even more complex history than we knew before,” said Hayden.
More lunar material will soon be available to scientists when humans (hopefully)
“We know most about the history of water on the Moon from the Apollo samples, but those samples are thought to only represent about five percent of the entire Moon surface,” said Hayden. “Until we get more samples back in the upcoming Artemis missions, the only other samples from the surface we have are meteorites.”
The study is published in