This is a piece of Terlingua Calcite, 2 pounds 4.8 ounces, from the Little 38 Mine in Terlingua, Texas. It shows the classic pink long wave, lilac mid-wave, and blue short wave fluorescent responses, with phosphorescence/afterglow lasting approximately 5 seconds after exposure to either short wave or mid-wave UV. Since the rock has some lavender and greenish tints in the long wave and mid-wave pictures, it may continue to develop brighter colors if kept in the sun a while longer. It measures approximately 4¾ x 3¼ x 3¼ inches.
This colorful piece of Terlingua Calcite is SOLD, with shipping within the continental U.S. included.
If you’d like to purchase any of our other pieces of Terlingua Calcite for sale, let us know by filling out our Contact Form.
Be sure to check out our sister blog Cool Rocks.