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AG102 Teepee Canyon Agate

AG102 Teepee Canyon Agate


AG102: Teepee Canyon Agate –

Approximate measurements: LxWxH – 8 1/2″ x 1 7/8″ x 6″.

Availability: single piece, exclusive.

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Teepee Canyon Agate was mined for many years on several claims located in the western Black Hills of South Dakota. Through the 1980’s and 1990’s, activities at these mines declined and, ultimately, ended as the owners passed retirement age. The area was closed for development of new mining plans prior to the early 1980’s. In recent years, activity has been limited to minor surface collection.

The agate occurred in nodules that were layered in a 3-foot-deep segment of the limestone deposit. Nodules were relatively numerous, but most were barren of agate and only contained jasper. The limestone was very hard, and recovery of the Teepee Canyon agates was hard-rock mining at its best. To minimize damage to the nodules, large jacks, mauls and chisels were used to free the nodules.

About 10 years ago, the area was devastated by a large forest fire. Subsequent exploration has located numerous agate areas within a 5-mile radius of the traditional Teepee Canyon mining area. The colors, pattern and matrix or the material from these outcrops, however, are significantly different than the typical red, white and yellow colors of Teepee Canyon material.

Additional information

Weight 1.25 lbs
Dimensions 8.5 × 1.875 × 6 in

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Keystone, SD 57751

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