Geological Superstore

Phonolite – Madeira

£1.50£4.00

Phonite is an igneous rock with a coarse grain texture, these specimens are from Pico Ruivo, Madeira, Portugal and have a grey colour with fine crystalline form. An uncommon rock, samples are supplied in a white card tray and come with an information label.

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SKU: PHONO_POR Category:

Phonolite is an extrusive igneous rock with a texture which ranges from fine to coarse grained, it has a intermediate chemical composition between felsic and mafic and is a fairly uncommon rock. These particular specimens are found in Pico Ruivo, Madeira, Portugal and exhibit a charcoal grey colouration and fine grained texture.Hard and dense, these rock samples are available in various sizes and come supplied in a white card tray and come with an information label.

Additional information

Weight 320 g
Specimen Size

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