"The Mystery of Lyle and Louise"

Codeable, 3D-printed robotic hand for interactive STEM learning.

Pale pink felsite, with small sanidine phenocrysts.

Spinel group; black, dull metallic luster; common iron oxide.

Black, soft; most widely mined.

Slaty cleavage; contains hematite.

Gray to buff, with numerous ooliths and fossil fragments.

Gray, fine-grained, massive contact rock.

Pure, large, transparent-to-translucent cleavages, Mohs’ hardness of 4.

Chlorite-bearing.

Light gray, fine small clasts.

Dense and massive.

Hematite-cemented quartz; orthoquartzite.

Lustrous, black 'hard coal'.

Heavy metal rods with threaded ends that screw into retort bases.

This life size hand model shows the superficial and internal structures of the human hand, including bones, muscles, tendons, ligaments, nerves, and arteries (superficial and deep palmar arches).

Shiny black volcanic glass showing conchoidal fracture and some spherulites.