Questionable
NOTES: Inhomogeneous down to small scales. Analysis is based on a small, well polished patch about 10 μm wide. Might be fun to try your hand at standardizing and then trying to get a reasonably good analysis.
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| Position | 53 |
| Mineral | Carbonate apatite |
| Sample Name | ApCO3 |
| Type | Phosphate |
| Nominal formula | Ca5(PO4)3Cl(CO3,OH,F) |
| Supplier | Cannon Microprobe, Seattle, WA |
| Source | Wyoming |
| Original reported analysis | Calculated from ideal formula, assuming CO3:OH = 1:1 |
| Composition quality | Questionable |
| Comments | Based on EDS and loose stoichiometric constraints. Improvement will require careful work. |
| C O F Na P Ca Fe | 0.85 38.6 3.82 0.14 16.49 39.91 0.18 |
