Basalt Specimen, Basalt is formed quickly from an iron-rich magma and exhibits a dark color and small crystal size., Pack of 12

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Here is the corrected text: This set of 12 raw basalt specimens showcases a large majority of the Earth's oceanic crust. Formed quickly from iron-rich magma, basalt exhibits a dark color and small crystal size, making it a perfect example of an aphanitic igneous rock. These specimens are useful for lessons in igneous rock classification and identification. While each specimen may vary slightly in shape, size, and color, they measure approximately 1 inch in length. Each is individually packaged, labeled, and barcoded for easy identification and storage. Selected and processed by a geologist, every specimen exhibits defining features. Rocks and minerals are sourced from various locations worldwide and hand-processed in Victor, NY. If you have any questions or need additional information about our rock and mineral samples, feel free to reach out to our team of scientists and geologists for technical support.