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| Local Name(s): |
Cumbria Green Slate, Cumbria Millom Green Slate. |
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| Stone Group: | Metamorphic | ||||||
| Stone Type: | Slate | ||||||
| Geology: |
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| Geological Sub-Divisons: | Caradoc. Borrowdale Volcanic Group. Millom Park Formation. |
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| General Colour Description: | Mottled grey/green colour, the stone is coarsely graded into broad bands containing angular rock fragments. There is no developed cleavage (Hart 1991: 22). |
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| Hand Specimen Description: | A hard, coarse, moderately well sorted volcanic tuff with a hackly fracture. |
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| General Comments: | This stone was originally a tuff, a volcanic ash deposit, it was subsequently metamorphosed to form a 'meta-tuff' slate. |
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| Stone Identifiers: | Foliated. | ||||||
| Reacts dilute to HCl? | No | ||||||
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