Rhyolite Specimen, Rhyolite Specimen is aphanitic felsic rock, formed during eruptions of thick, viscous magma., Each

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Here is the corrected text: Raw Rhyolite Specimen - Single Sample, 1" Rhyolite is an aphanitic felsic rock that forms during eruptions of thick, viscous magma. It often contains phenocrysts of felsic minerals with only slightly higher crystallization temperatures than the feldspar and quartz that form rhyolite. This specimen is ideal for teaching students about rounding and sorting, as well as for identification and classification exercises. The evolved chemistry of the rock makes it lightweight relative to other igneous rocks, making it a good identifier for classification. While each specimen will vary slightly in shape, size, and color, it will measure approximately 1" in length. Each is individually packaged, labeled, and barcoded for easy identification and storage. Selected and Processed by a Geologist Each and every specimen is selected and hand-processed by an actual geologist, ensuring that each sample exhibits defining features. Rocks and minerals are sourced from a variety of locations around the world and are processed by hand in Victor, NY. Technical Support Always feel free to reach out to our team of scientists and geologists for additional information or to assist you with any questions regarding our rock and mineral samples.