Wüstite Mystery Cache
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Difficulty:
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Terrain:
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Size: 
(regular)
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This being a puzzle cache, you will not find it at the posted coordinates. It is, however, within two miles of this spot. Don't worry, that's only 12.5 square miles to search. 
But perhaps something from high school chemistry will help you narrow it down a bit...
The difficulty is for the puzzle; the find will be quite easy once you get the right coordinates.
Additional Hints
(No hints available.)