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Rare Fossil Dragonfly Covered in Druzy Calcite - Salton Sea, California

Rare Fossil Dragonfly Covered in Druzy Calcite - Salton Sea, California
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Dragonfly
Calcareous sinter
Salton Sea, California

Dragonfly : 3.78 X 1.8 in
Matrix : 5.2 X 4.5 inches
1 inch = 2.54 cm

One of the strangest fossils I've handled, this dragonfly landed near a hydrothermal vent in the Salton Sea of southern California, died, and was preserved in a fine druzy calcite known as "Calcareous sinter"! This type of preservation is typically known from hot springs or limestone caves.

These specimens were first discovered on a Smithsonian expedition to the area between 1938-1940.

As of writing this, I have found the existence of less than a dozen specimens in museum collections around the world and private hands, 8 of which seem to be in museum collections (Japan, Ireland, California UCMP, Smithsonian, Minnesota, Texas Museum of Entomology, Oregon), the others are held privately.
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Another amazing specimen from the Salton Sea!
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