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Description: | Mineral hand specimen of Calcite Nailhead spar associated with Limestone. Collected from the Raisby Formation, Permian (Upper) at Middridge Quarry, Middridge, Co Durham (NE England). Collected by J. Holden, July 1977.
The specimen was found in NE England.
It is from the Permian period (290 - 248 million years ago) | Publisher: | Tyne & Wear Archives & Museums | Subjects: | Holden Classification: Calcite Nailhead spar J. | Temporal: | Permian period (290 - 248 million years ago) | Source: | Tyne & Wear Archives & Museums | Identifier: | http://www.twmuseums.org.uk/geofinder/se... | Go to resource |
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