Pumice is formed from the frothy lava that a volcanic explosion creates. As the frothy lava cools, it hardens as a light weight rock that is filled with small gas bubbles. Because this rock is so porous and light, it can actually float on water. Perfect for demonstrating the effect of vesicles on rock density, as well as for lesson in identification and classification of igneous rocks. While each specimen will vary slightly in shape, size and colour, it will measure approximately 1" in length. Each is individually packaged, labeled and barcoded for easy identification and storage.
- Each and every specimen is selected and hand processed by an actual geologist, ensuring that each sample exhibits defining features
- Perfect for demonstrating the effect of vesicles on rock density, as well as for lesson in identification and classification of igneous rocks.
- Set of twelve samples, excellent for group study and examination
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