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Anthracite Coal is formed in anoxic environments from compressed organic matter, and is used worldwide as fuel source.
Product Type | Metamorphic Rock, Anthracite Coal |
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Rhyolite Specimen is aphanitic felsic rock, formed during eruptions of thick, viscous magma.
Product Type | Igneous Rock, Rhyolite |
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Thickness | 0.332 mm |
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Specimen Size | 50.8mm dia. x 0.332 mm thick |
Description | EPI polished two sides |
Product Type | Sapphire Substrate, EPI Polished Two Sides |
Diameter (Metric) | 50.8 mm |
Product Type | Sapphire Sphere |
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Diameter (Metric) | 4.78 mm |
Grade | Grade 25 |
Designed to match most introductory-level textbooks
A fun introduction to the world of geology through a 12-piece rock kit. Each Tech Cut specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features.
A fun introduction to the world of geology through a 12-piece rock kit. Each Tech Cut specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features.
A fun introduction to the world of geology through a 12 piece set. Each Tech Cut specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features.
A fun introduction to the world of geology through a 12-piece rock kit. Each Tech Cut specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features.