Eisco Obsidian Specimen (Igneous Rock), Approx. 1" (3cm)

Coal is formed in anoxic environments from compressed organic matter, and is used worldwide as a fuel source. Anthracite coal is bright and reflective, indicative of the intense heat and pressure required to form it. Anthracite coal often has a favorable purity ratio, containing mostly organic material and relatively few impurities. This sample is also available in packs of 12.

Anthracite coal sample approximately 1" (3cm) in size
Denser than bituminous coal, with a higher proportion of carbon
Perfect size for use in classroom identification labs and exercises, correlates well to Next Generation Science Standards Evidence Statements
Students can get a close look at a material that powers the world
Specimen comes in clear labeled and barcoded bag for ideal storage
Anthracite coal sample approximately 1" (3cm) in size
Denser than bituminous coal, with a higher proportion of carbon
Perfect size for use in classroom identification labs and exercises, correlates well to Next Generation Science Standards Evidence Statements
Students can get a close look at a material that powers the world
Specimen comes in clear labeled and barcoded bag for ideal storage

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EISCO Anthracite Coal Specimen (Metamorphic Rock), Approx. 1" (3cm);