Guide to minerals: Selenite
Jerrod Gallup (USA)
I got this selenite crystal at the first Pebble Pups meeting I attended. As a result, I researched this crystal and found lots of interesting facts, in particular, that it was very unique. This particular crystal was found in Oklahoma in 1970. In fact, you can go to Oklahoma and find selenite crystals on the salt plains there and the hourglass-shaped selenite crystals are only found at this location. It is also the Oklahoma State Crystal.

Image by Jerrod Gallup, 2013.
Facts on file Formula: CaSO4 2H2O Category: Sulphate mineral Crystal system: Monoclinic Mohs hardness scale: 2 Lustre: Pearly Streak: White Colour: Can be green, brownish, yellow, greenish, gray green or gray white Selenite crystals are found in: Mexico and Oklahoma |
Haiku
An orange crystal
Formed by nature’s loving hands
In the soft brown ground.
About the author

Jerrod Gallup (age 9) is a third grader at Columbine Elementary School, Woodland Park, CO. He belongs to the Lake George Gem and Mineral Club.