"Avantor"

Specially selected thin sections of important rock forming minerals. Set may contain more than one example of the same mineral to depict variations in occurrence and distinct mineral associations.

Slides (12); annite, biotite, clinochlore, fuschite, glauconite, lepidolite, margarite, muscovite, paragonite, phlogopite, sericite, zinnwaldite.

Specially selected thin sections of important rock forming minerals. Set may contain more than one example of the same mineral to depict variations in occurrence and distinct mineral associations.

Slides (12): actinolite, anthophyllite, cummingtonite, ferrohornblende, fluoredenite, glaucophane, grunerite, hexagonite, kaersutite, magnesiohornblende, riebeckite, tremolite.

Ten New Slides in a Complete Teaching Set

Examples of the More Important Minerals Found in Rocks

Five Types of Cohesiveness

Give Your Students a Lesson in Economics as Well as Geology

Amazonite

Beautiful deep green, prismatic, crystalline spray.

Polished banded slices with colorful translucence.

A fascinating and colorful classroom study set.

Hardened natural cement of calcium carbonate that binds other material such as gravel, sand, clay, and silt.

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

Brazil.

Clear to yellow translucent.

Brownish gray, translucent.

Yellow to orange crystal with a glassy luster and smooth, often transparent appearance.