Guide to Rocks and Minerals of Illinois

Blacktop Quarry, Carroll County, Illinois

Ordovicain age dolomite, Savanna Blacktop Quarry, Carroll County

Ordovician age dolomite, Savanna Blacktop Quarry, Carroll County.



Rocks and Minerals of Illinois Table of Contents

The printed version of Guide to Rocks and Minerals in Illinois can be purchased from the Shop ISGS Web site.


Updated 11/11/11 SLD

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