Table 1.
Mineralogy of Two Antibacterial Clays (ARG and OMT) Compared to Non-Antibacterial Clay (NAB), by Quantitative X-ray Diffraction17 Using CuKα Radiationa
| ARG |
OMT |
NAB |
|||
|---|---|---|---|---|---|
| mineral | wt% | mineral | wt% | mineral | wt% |
| Clay Minerals | Clay Minerals | Clay Minerals | |||
| 1Md Illite (+ smectite) | 30 | Illite-smectite (R1) | 49.6 | kaolins | 2.4 |
| Fe-smectite | 33 | chlorite | 3.1 | Ca smectite | 3.0 |
| 1 M Illite (R > 2) | 13 | Fe-smectite | 8.3 | ||
| mica (2M1) | 3.3 | biotite (1M) | 13.6 | ||
| mica (2M1) | 4.1 | ||||
| chlorite | 6.0 | ||||
| Non-Clays | Non-Clays | Non-Clays | |||
| quartz | 2.0 | quartz | 38.3 | quartz | 6.2 |
| calcite | 4.4 | amphibole | 0.5 | plagioclase | 43.9 |
| microcline | 3.4 | pyrite | 8.2 | Fe-amphibole | 3.8 |
| orthoclase | 2.9 | jarosite | 0.2 | pyrite | 0.7 |
| albite | 1.6 | gypsum | 0.9 | gypsum | 2.0 |
| apatite | 0.5 | ||||
| total nonclays | 14 | total nonclays | 48.1 | actinolite | 2.7 |
| calcite | 0.8 | ||||
a
Notation: R = Reichweite (ordering); M = monoclinic; Md = nonoclinic disordered.