| Minerals (%) |
AS 1 Nail 1 |
AS 2 Nail 1 |
AS 3 Nail 1 |
AS 4 Nail 1 |
AS 5 Nail 2 |
AS 6 Nail 2 |
Environment of crystallization |
| Metallic Iron |
0 |
100 |
0 |
0 |
0 |
0 |
Wrought iron, smelted from pyritic iron ore |
| Goethite α FeO(OH) |
50.5 |
0 |
97 |
20.5 |
34.8 |
52.1 |
Crystalization at pH ~7 in moist – well oxygenated setting |
| Lepidocrocite γ FeO(OH) |
7.1 |
0 |
0 |
6.8 |
8.7 |
7.3 |
Crystalization under anaerobic -hydromorphic conditions at pH~6 |
| Magnetite Fe3O4 |
27.3 |
0 |
0 |
6.8 |
47.4 |
24.7 |
Biomineralization in basic, suboxic, anaerobic environment, pH > 7 |
| Akaganeite (ß-FeOOH,Cl) |
0 |
0 |
0 |
0 |
6.2 |
0 |
Hyper-chlorinated, acidic and oxidizing environment, pH < 7 |
| Calcite CaCO3 |
15.1 |
0 |
3 |
34.2 |
2.9 |
5.1 |
Flowstone deposit |
| Aragonite CaCO3 |
0 |
0 |
0 |
22.7 |
0 |
0 |
Cave-type crystallization |
| Quartz SiO2 |
0 |
0 |
0 |
9 |
0 |
0 |
Sandstone pockets in Gihon aquifer |
| Ankerite Ca(Fe,Mg)(CO3)2 |
0 |
0 |
0 |
0 |
0 |
10.6 |
Cave-type crystallization |
| Gypsum (CaSO4∙2H2O). |
0 |
0 |
0 |
0 |
0 |
0.3 |
Cave-type crystallization |