"The Mystery of Lyle and Louise"

White and black bands of quartz, feldspar, and biotite; typical foliation.

Teach your students about the complete metamorphosis of an insect with these mealworms.

Formalin preserved land snails. Available in jars or pails.

Formalin Preserved

Pale pink felsite, with small sanidine phenocrysts.

Red, medium, to coarse-grained iron oxide cement; shows hematite bands.

Light gray, fine small clasts.

Gray to brown mudstone with abundant silt.

Red-brown to gray, coarse-grained, containing feldspar and mica.

Dark gray with abundant gas pocket vesicles.

Silvery, paragranite and muscovite-rich with medium garnet crystals.

Brown, fluorescent crystals intergrown in dolomite rock.

Red, earthy, in natural chunk form; common pigment ore.

Pink and gray bands, with biotite; shows good foliation.

Gray to buff, with numerous ooliths and fossil fragments.

Dense and massive.