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| Local Name(s): |
Reigate Stone, Firestone, Malmstone, Malm Rock, Burrystone, Hearthstone. |
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| Stone Group: | Sedimentary | ||||||
| Stone Type: | Sandstone | ||||||
| Geology: |
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| Geological Sub-Divisons: | Gault. Upper Greensand. |
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| General Colour Description: | It varies in colour from light grey to olive green depending on the amount of glauconite in the beds (Lockwood 1993/4: 19). |
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| Hand Specimen Description: | A fine grained, compact, well sorted, calcareous sandstone. It is mid-way between a sandstone and a limestone. It comprises fine quartz sand grains cemented in a calcite matrix. The presence of tiny flecks of muscovite mica and its amorphous silica distinguishes it from Kentish Ragstone. It has an open pore structure which makes it a popular choice for carving and the stone as a whole has no discernible bedding planes. In decay, it has a typical scaly appearance caused by dissolving of the matrix and fragmentation of the crust into small flakes (Lockwood 1993/4: 19). |
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| Stone Identifiers: | Calcareous, Micaceous. | ||||||
| Reacts dilute to HCl? | Yes | ||||||
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