Predictive Mineralogy
Possible unrecorded species at Koidu-Yengema, Kono District, Eastern Province, Sierra Leone
This table is based on statistical analysis of other localities containing similar species to the ones found at this locality.
| Possible missing species | Formula | Match % | Due to recorded presence of |
|---|---|---|---|
| Troilite | FeS | 71.01% | Iron (71.02 %) |
| Chalcopyrite | CuFeS2 | 70.81% | Pyrite (51.72 %), Pyrrhotite (76.22 %) |
| Taenite | (Fe,Ni) | 59.57% | Iron (59.58 %) |
| Muscovite | KAl2(AlSi3O10)(OH)2 | 56.04% | Almandine (56.05 %) |
| Sphalerite | ZnS | 44.31% | Pyrrhotite (55.40 %) |
| Chromite | Fe2+Cr3+2O4 | 40.94% | Iron (51.19 %) |
Key: Mineral matches key element mineralogy of deposit Key element(s) in mineral not listed for deposit (-20% score)
Predicting paragenetic modes of deposit
Green indicates almost certain match based on minerals unique to a certain deposit type. Yellow indicates a possibly poor match, but should not be entirely discounted. Scores > 100 indicate strong confidence.