SPI Supplies Individual Microanalysis Standard Item, Minerals Group, Biotite
SPI Supplies Individual Mounted Microanalysis Standard Item, Minerals Group, Biotite
SPI Supplies Individual Loose Microanalysis Standard Item, Minerals Group, Biotite (alternate to AS1
SPI Supplies Microanalysis Standard Item, Minerals Group, Biotite
K(Mg,Fe)₃AlSi₃O₁₀(OH)₂
| Element | Percentage |
|---|---|
| O | 43.950% |
| Si | 18.100% |
| Mg | 11.770% |
| Fe | 8.330% |
| K | 8.230% |
| Al | 8.010% |
| Ti | 1.060% |
| H | 0.460% |
| Ca | 0.070% |
| Mn | 0.030% |