Generic Eisco Anthracite Coal Specimen (Metamorphic Rock), Approx. 1" (3Cm) - Pack Of 12  (Multicolor)

Eisco Anthracite Coal Specimen (Metamorphic Rock), Approx. 1" (3cm) - Pack of 12 Twelve anthracite coal samples 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 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.