Table 2.
Summarised results of SEM–EDS analyses conducted on ochre pieces from Porc-Epic Cave.
| Num | Raw mat | Clay-sized particles (< 4 µm) | Silt and sand-sized particles (> 4 µm) | ||
|---|---|---|---|---|---|
| Shape | Composition* | Shape | Composition* | ||
| 17 | SFG | Irr | Fe (iron oxide) | – | – |
| Plat | Si, Al, Ca, K, Mg (clay min) | ||||
| Irr | Si (silicate) | ||||
| 295 | SFG | Aggl/irr | Fe (iron oxide) | Irr | Si (silicate) |
| Subcirc | Ca, S (calcium sulphate) | ||||
| 538 | SFG | Plat | Fe (iron oxide) | Irr/ang | Fe (iron oxide) |
| Aggl | Si, Al, Fe, Na, K, Ca (clay min) | Irr | Si (silicate) | ||
| Subcirc | Ni (undet Ni-rich particle) | Plat | Si, Al, Fe, K, Ca (mica) | ||
| 913 | SFG | Irr | Fe (iron oxide) | Irr/aggl | Fe (iron oxide) |
| Plat | Si (silicate) | ||||
| Aggl | Si (silicate) | ||||
| Irr | Si, Al, Ca, K, Mg (mica) | ||||
| Ang | Ca, S (calcium sulphate) | ||||
| 919 | SFG | Irr/subcirc | Fe (iron oxide) | Irr | Si (silicate) |
| Aggl | Ba, S (barium sulphate) | Ang | Ca, S (calcium sulphate) | ||
| 930 | SFG | Irr | Fe (iron oxide) | Aggl | Fe (iron oxide) |
| Acic | Fe (iron oxide) | Irr | Si, Al, K, Ca (K-rich feldspar) | ||
| Irr/aggl | Si, Al, Ca, K, P (clay min) | ||||
| 987 | SFG | Aggl | Fe, Mn (iron oxide) | Ang | Fe, Mn (iron oxide) |
| Ang/plat | Si (silicate) | ||||
| Tab | Ba, S (barium sulphate) | ||||
| 994 | SFG | Plat/aggl | Fe (iron oxide) | Plat | Si, Al, K, Ca (K-rich mica) |
| Irreg | Fe (iron oxide) | ||||
| Irreg | Si, Al, K, Ca (clay min) | ||||
| Plat | Si, Al, K, Ca (clay min) | ||||
| 1635 | SFG | Irr/aggl | Fe, Mn (iron oxide) | Irr | Fe, Mn (iron oxide) |
| Aggl | Si, Ca, Al, K, P (clay min) | Irr | Si (silicate) | ||
| Aggl | Ca, S (calcium sulphate) | ||||
| 1914 | SFG | Aggl | Fe (iron oxide) | Aggl | Fe (iron oxide) |
| Irr | Si (silicate) | ||||
| Plat/aggl | Ba, S (barium sulphate) | ||||
| 1927 | SFG | Aggl | Fe (iron oxide) | Irr/aggl | Fe (iron oxide) |
| Aggl | Ca (carbonate) | ||||
| 306 | BFG | Irr/plat | Fe (iron oxide) | Tab | Fe (iron oxide) |
| Irr/plat | Si, Al, Ca, K, Mg (clay min) | ||||
| 521 | BFG | Aggl | Fe (iron oxide) | Plat | P, Ca (calcium phosphate) |
| Irr | Fe (iron oxide) | ||||
| Plat | Si, Al, Ca (clay min) | Irr | Ca (carbonate) | ||
| Plat | Si (silicate) | ||||
| Subcirc | Si (silicate) | ||||
| 102 | HFG | Irr | Fe (iron oxide) | Irr | Fe (iron oxide) |
| Irr | Si (silicate) | ||||
| Ang/plat | Si, Al (mica) | ||||
| 1419 | HFG | Irr | Fe (iron oxide) | Plat | Fe (iron oxide) |
| Ang | Si (silicate) | ||||
| 1752 | HFG | Aggl | Fe (iron oxide) | Plat | Fe (iron oxide) |
| Aggl | Si, Ca, Al, K, P, Mg (clay min) | Aggl | Si (silicate) | ||
| 1510 | CG | Aggl/subcirc | Fe (iron oxide) | Plat | Fe (iron oxide) |
| Subcirc | Si (silicate) | ||||
| Plat | Ca, S (calcium sulphate) | ||||
| 1628 | CG | Plat | Fe (iron oxide) | Subcirc | Si (silicate) |
| Plat | Si, Al, Ca, K, Mg (clay min) | Plat | Si, Al, Ca, Na (Ca-rich feldspar) | ||
| 101 | FS | Aggl | Fe (iron oxide) | Irr/plat | Si (silicate) |
| Irr/plat | Fe (iron oxide) | Tab | Si (silicate) | ||
| 973 | FS | Plat | Fe (iron oxide) | Aggl | Fe (iron oxide) |
| Aggl | Si, Ca, Fe, Al, K (clay min) | Irr/ang | Si (silicate) | ||
| Ang | Ca, S (calcium sulphate) | ||||
| 436 | PFG | Plat | Fe (iron oxide) | Plat | Fe (iron oxide) |
| Aggl | Si, Ca, Al (clay min) | ||||
| Irr | Si (silicate) | ||||
| 1812 | PFG | Irr/aggl | Fe (iron oxide) | Plat/tab | Fe (iron oxide) |
| Acic | Fe (iron oxide) | ||||
| Tab | Ba, S (barium sulphate) | ||||
Num number, raw mat raw material, SFG soft fine-grained, BFG banded fine-grained, HFG hard fine-grained, CG coarse-grained, FS ferruginous sandstone, PFG platy fine-grained, irr irregular, plat platy, aggl agglomerate, subcirc subcircular, acic acicular, ang angular, tab tabular, clay min clay mineral.
*Interpretation in brackets.