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Description: | A specimen of an igneous rock identified as Porphry. The specimen has been cut and polished on one side. It is coarse grained and consists of crystals which are pink, white, grey and black in colour. The matrix is fine grained and red. The back of the specimen is rounded. AR/CB
A specimen of an igneous rock known as Porphry | License: | http://creativecommons.org/licenses/by/2.0/uk/ | Publisher: | Sandwell Museums | Rights holder: | Sandwell Museums | Subjects: | Mineralogy Geology | Source: | Black Country History | Identifier: | http://www.blackcountryhistory.org/colle... | Go to resource |
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