Ward's® Obsidian

Supplier: Avantor
470026-136EA 16.89 USD
470026-136 470026-138 470026-140
Ward's® Obsidian
Specimens Rock Specimens Igneous Rocks
Shiny black volcanic glass showing conchoidal fracture and some spherulites.

Información para pedidos: WARD’S offers different specimen sizes to meet your various needs. Student specimens are ideal for students to use for study and identification. Student specimens range in size from 1×1" to 1×2" and come in packages of ten. Hand Specimens are great for lectures, demonstrations, and display. Hand specimens range in size from 2×3" to 3×4", and each comes in a labeled plastic tray. Bulk pack includes several of the smaller pieces that are suitable for classroom study, while the largerMore Product Information
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