"Ward's Phenomena Lab Activities"

Designed for Introductory College Petrography Labs

Designed for Introductory College Petrography Labs

Designed for Introductory College Petrography Labs.

Specimens to supplement the most widely-used college lab manual for physical geology.

Gray and poorly sorted, with a gritty texture.

Coarse grained and abundant in plagioclase feldspar.

Unusual glassy tubes of fused sand produced by lightning strikes in desert sediments. Average size: 1.5"- 2".

Light gray, fine-grained, well-foliated, schistose.

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

Gray-to-brown basaltic, with over 50% vesicles.