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Article Title

The Rockford Geodes

Document Type

Research

Abstract

These geodes occur in Lime Creek shales. They are rather unusual in containing a number of roundish cavities rather than the customary rough opening. The cavities are lined with: 1. small rhombic calcite crystals which are bronzed with limonite; 2. occasional tabular and fan-shaped aggregates of barite crystals. The mode of formation is obscure.

Publication Date

1922

Journal Title

Proceedings of the Iowa Academy of Science

Volume

29

Issue

1

First Page

128

Last Page

129

Copyright

©1922 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

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