A mineral form of calcium phosphate, related to apatite and found in certain geological deposits.
Named after the Hatchett family or Hatchett location where the mineral was discovered, with the -in suffix common in mineralogy. The exact etymology is geological rather than linguistic.
This is a super rare mineral that few people have ever heard of, but it's part of the phosphate family that's crucial for fertilizers and even for our bones—tiny crystals with big importance!
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