| | Journal (article/letter/editorial) | CONNOISSEUR'SCHOICE RoBeRT B. Cook Department of Geology and Geography Auburn University Auburn, Alabama...are a traditional favorite of many mineral collectors. They are colorful and of widespread geologic and...pyromorphite, mimetite, other members of the apatite group, and a very long list of additional minerals, all characterized...phosphate radical, are some of the most attractive species and indeed represent some of our most valuable specimens...many of our favorite phosphates are of only secondary origin, forming during the weathering of metal-bearing |
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