| Element | % |
| O | 38.07 |
| F | 3.77 |
| P | 18.42 |
| Ca | 39.74 |
|
|
| Sum | 100.0 |
|
|  | |
| 200 µ m
| |
|
This is a reflected light micrograph of polished, carbon coated apatite crystals.
The identifying etched label, which is a feature
of our standards, is invaluable for navigating in an electron beam instrument.
Not only can this be
used as a standard for phosphorus, but the significant amount of fluorine can be
detected with most modern X-ray spectrometers.
|