4. Willemite (Zn,Mn)2SiO4
This standard offers a major quantity of zinc in a silicate matrix, as well as providing an excellent means of locating the electron beam through its
bright green cathodoluminescence. It is named after King Willem I of the Netherlands.
Locality: Franklin Furnace, NJ, USA
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|---|
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This is a reflected light micrograph of polished Willemite.
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| Element | % |
| Oxide | % |
|---|
| O | 29.40 | | | |
| Si | 13.13 | | SiO2 | 28.09 |
| Mn | 3.73 | | MnO | 4.82 |
| Zn | 53.74 | | ZnO | 66.89 |
|
|
|
| Sum | 100.0 | | Sum | 99.8 |
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