Rock Specimens
120
General Collection of Rocks and Minerals
Students discover the variety of rocks and minerals with this collection.
Ward's® Illite Shale
Green shale which contains approximately 85% Illite. Impurities may include other clay minerals, such as micas and feldspars.
North American Rock Collection
This collection with rock types and associations with the North American continent contains 100 specimens with each group represented: igneous, metamorphic, and sedimentary. Specimens are approximately 1"" x 1"", number-coded in compartmented container.
Pocket Hardness Points Set
Students determine a mineral's hardness between five and 10 on Mohs' scale.

