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Local Name(s): | Brandy Crag Slate. | ||||||
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Stone Group: | Metamorphic | ||||||
Stone Type: | Slate | ||||||
Geology: |
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Geological Sub-Divisons: | Borrowdale Volcanic Group. |
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General Colour Description: | Silver grey to green in colour often with contrasting veins. |
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Hand Specimen Description: | A coarse, hard, compact slate which is moderately well sorted 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 |