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New explorations at the Stoneham, Colorado, barite locality

Rocks & Minerals

By:
, ,

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Abstract

Stoneham in northeastern Colorado is known throughout the world for its occurrence of stunning blue barite crystals. The barite at Stoneham occurs in a bed rich in montmorillonite clay, derived from alteration of volcanic ash, in the Chadron Formation of the White River Group of Oligocene sedimentary rocks. The barite crystals, as much as 4-6 inches long, crystallized from ground water within open pockets that formed by movement along a northeast-dipping reverse fault that cuts the clay bed. -from Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
New explorations at the Stoneham, Colorado, barite locality
Series title:
Rocks & Minerals
Volume
65
Issue:
3
Year Published:
1990
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
203
Last page:
222
Number of Pages:
20