| Element | Wt % |
| Oxide | Wt % |
|---|
| O | 38.39 | | | |
| Na | 0.04 | | Na2O | 0.05 |
| Al | 0.02 | | Al2O3 | 0.04 |
| Si | 22.46 | | SiO2 | 48.05 |
| K | 0.05 | | K2O | 0.06 |
| Ca | 13.56 | | CaO | 18.97 |
| Mn | 18.83 | | MnO | 24.31 |
| Fe | 6.32 | | FeO | 8.13 |
| Zn | 0.20 | | ZnO | 0.25 |
|
|
| |
|
| Sum | 99.9 | |
Sum | 99.9 |
|
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Crushed separated crystals
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Locality: Broken Hill, NSW, Australia
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This is a reflected light micrograph of a polished, carbon coated bustamite crystal. The identifying etched label, which is a feature of our standards, is invaluable for navigating in an electron beam instrument. Similar to rhodonite,
another manganese rich silicate, also in this standard, bustamite has more calcium, thus providing an opportunity for cross checking the composition of Ca Mn silicates.
Click here
for a mineralogical account of everything you might want to know about Bustamite.
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