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Keokuk Geodes Washout

Hamilton, Hancock County, Illinois, USA

Keokuk Geodes exposed in washout after heavy late summer rains in Hancock County, northeast of Hamilton. Scale around 3 meters side to side.

Photo ID: 916005 Uploaded by: Joel Herr Upload date: 2018-10-22 View Count: 153 Status: Public galleries Type: Photo - 2816×2112 (5.9 Mpix)

Helen Beryl Mine, Fourmile, Custer Co., South Dakota, USA Directions

Helen Beryl Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA

Directions to the Helen Beryl Mine using Forest Service Roads.

Photo ID: 896329 Uploaded by: Joel Herr Upload date: 2018-06-25 View Count: 30 Status: User gallery only Type: Photo - 1275×1650 (2.1 Mpix)

044-05F Beryl Be₃Al₂(Si₆O₁₈)

Helen Beryl Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA

Field of View: 12 cm
Largest Crystal Size: 3 cm

The Helen Beryl Mine is a pegmatite located about 8 miles southwest of Custer, SD. The body contains beryl, sheet mica, scrap mica, and perthite according to the sources I have read about it. There are 3 beryl crystals shown next to each other in the picture. I worked for over two hours trying to remove them intact.

Photo ID: 895862 Uploaded by: Joel Herr Upload date: 2018-06-19 View Count: 252 Status: Public galleries Type: Photo - 3024×4032 (12.2 Mpix)

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Joel Herr's Photo Gallery

Keokuk Geodes Washout

Helen Beryl Mine, Fourmile, Custer Co., South Dakota, USA Directions

044-05FBeryl Be3Al2(Si6O18)

044-05F Beryl Be₃Al₂(Si₆O₁₈)