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Apatite, Robertsite, Carbonate-hydroxylapatite
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| Mineral: | Apatite: Ca5(PO4)3(OH,F,Cl) Robertsite: Ca6Mn+++9(PO4)9O6(H2O)6ยท3(H2O) Carbonate-hydroxylapatite: Ca5(PO4,CO3)3(OH) | ||||
| Comments: | Black crystals of Robertsite on pink carbonate-hydroxylapatite. | ||||
| Location: | Tip Top mine, Custer, Custer County, South Dakota, USA. | ||||
| Scale: | Not Given. | ||||
| Copyright: | © Lou Perloff / Photo Atlas of Minerals | ||||
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