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July-August 2018

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Letters

MUSEUM INVITATION

September is the time of year when geologists and mineralogists descend upon the Rocky Mountains for the Denver Gem and Mineral Show (14–16 September), and there is no better way to kick things off than with the annual museum open house at the Colorado School of Mines Geology Museum in Golden, Colorado. Everyone is invited to spend an evening chatting with old friends, making new acquaintances, and enjoying our latest displays. In addition to the great company, our reception includes free appetizers and a cash bar.

During the past year the museum received a collection of Territorial Gold Coins on loan from Jan Mayer, who has graciously allowed us to tell the story of early mints in Colorado. The seventh mural in the Irwin Hoffman series on the History of Mining will be on display now that a restoration and mounting of the work has been completed. I also encourage visitors to see the exhibit put together by the Critical Materials Institute, which shows how minerals make our modern devices possible.

Latest Hoffman mural at the Colorado School of Mines Geology Museum.

Latest Hoffman mural at the Colorado School of Mines Geology Museum.

I hope you'll be able to join us on Wednesday evening, 12 September, from 6–9 P.M.

RUIZITE FROM PENNSYLVANIA

Seeing the article in the January/February 2018 Rocks & Minerals (pages 92–93) about the passing of Joe Ruiz, for whom ruizite was named, reminded me that we have probably the most spectacular crystals of ruizite right here in my home state of Pennsylvania. Discovered by Bob Buckmoyer, James “Skip” Colflesh, and Scott Snavely in 2007 on a mine dump at the old Cornwall iron mine, Cornwall, Lebanon County, this material has been somewhat widely disseminated, and many photographs have been taken. Those that are remarkably sharp and visually pleasing come from Christian Rewizter, one of which is shown here. The crystal clusters average about 1 mm in diameter. The mineral has now been found in six places around the world, but most would agree that the Pennsylvania ruizite is the most perfectly crystallized and the most beautiful.

Ruizite, 1 mm, Cornwall iron mine, Cornwall, Lebanon County, Pennsylvania

Ruizite, 1 mm, Cornwall iron mine, Cornwall, Lebanon County, Pennsylvania.

 

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