 Why does Evans have difficulty identifying crystals?
Evans, who had no watch, thought of the time as a quarter after Australia. Evans was a prospector, and like all prospectors, a sort of jackknife geologist, selenologist, rather. Evans sealed the turbine from the rest of the steam system by closing the shut-off valves. After the sun rose, Evans returned to the lava cave that he had been exploring when the meteor hit. One at a time, back in the tractor, he took the crystals out of the bags and analyzed them as well as he could without using a flame which would waste oxygen. All of these needed water to form, and their existence on the Moon puzzled him for a while.
 They were not actually crystals to begin with
 All of the crystals he found were very rare  He does not have much experience in doing so  They were not actually crystals to begin with  None of the crystals were native to the moon