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| Name: Coarseware 13 | Code: C13 |
| Distinguishing features: Grey grit inclusions |
| Colour: Pinkish orange-grey, 2.5YR 6/8-7.5YR 7/4 | Texture: Rough | Strength: Weak |
| Hardness: Medium-high | Resistance: Medium-low | Fracture: Finely irregular |
| Manufacture: Wheel | Firing temperature: Medium | Firing atmosphere: Mixed |
| Surface treatment: None |
| Clay matrix: Medium elutriated |
| Inclusions: |
| Type | Size mm. | Colour | Mineral % | Shape | Sorting | Note |
| Crystals | <2 | Transparent | Quartz? 10 | Angular | Poor | |
| Grit | <2 | Grey | ? 1-15 | Sub-angular | Poor | |
| Particles | <2 | Orange | Grog 2-10 | Sub-round | Poor | |
| Platelets | <1 | Golden | Biotite mica <5 | Platelet | Poor |
| Notes: |