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Rocks and Minerals · Igneous Rocks
Obsidian Specimen
A specimen of obsidian, a volcanic glass with no crystal structure that forms when silica-rich lava cools very quickly. It breaks with a conchoidal fracture and was valued in the past for making sharp-edged tools.
- Pack
- Single (1 EA)
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Other sizes & packs
3 variants in this rangeSingle (1 EA)This productCat. No. GEO-04-Z11-9000-007
Pack of 12 (PK)Obsidian Specimen, Pack of 12Cat. No. GEO-04-Z11-9000-008Pack of 6 (PK)Obsidian Specimen, Pack of 6Cat. No. GEO-04-Z11-9000-009 A specimen of obsidian, a volcanic glass with no crystal structure that forms when silica-rich lava cools very quickly. It breaks with a conchoidal fracture and was valued in the past for making sharp-edged tools.
| Cat. No. | GEO-04-Z11-9000-007 |
|---|---|
| Category | Rocks and Minerals / Igneous Rocks / Extrusive (Volcanic) Igneous Rocks |
| Subject | Earth Science |
| Pack size | Single (1 EA) |
| Shipping weight | 0.20 lbs / 91 gms · 0.091 kg |
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