| Sample location | Witte Paarden, Overijssel |
| Formation | Formation of Drenthe |
| Deposit | Boulder Clay |
| Date | 21-06-2020 |
Proportions of translucent heavy minerals
| Garnet | Fe2+Al2[SiO4]3 | 37 | 15.9% |
| Epidote | Ca2Fe3+Al2O.OH[Si2O7][SiO4] | 50 | 21.6% |
| Clinozoisite | Ca2Al.Al2O.OH[Si2O7][SiO4] | 7 | 3.0% |
| Hornblende | (Ca,Na)2–3(Mg,Fe,Al)5(Al,Si)8O22(OH,F)2 | 79 | 34.1% |
| Staurolite | (Fe2+Mg)2(AlFe3+)9O6[SiO4](O,OH)2 | 10 | 4.3% |
| Sillimanite | Al2O[SiO4] | 11 | 4.7% |
| Kyanite | Al2O[SiO4] | 7 | 3.0% |
| Andalusite | Al2O[SiO4] | 1 | 0.4% |
| Topaz | Al2O[SiO4](F,OH)2 | 2 | 0.9% |
| Tourmaline | Na(Mg,Fe,Mn,Li,Al)3Al6[Si6O18](BO3)3(OH,F)4 | 20 | 8.6% |
| Zircon | ZrSiO4 | 4 | 1.7% |
| Rutile | TiO2 | 4 | 1.7% |
| Total | 232 | 100.0% |
Pie chart of translucent heavy minerals
Picture of heavy mineral strewn slide
