Labradorite is uncommon feldspar mineral that shows a play of colors when turned in the sunlight and this feature is called labradorescence. Labradorite has a hardness of 6-6.5 and a specific gravity that ranges from 2.68 to 2.72. The streak is white and the crystal belongs to the triclinic system. Labradorite is common in dark, mafic igneous rocks such as basalt and gabbro. This amazing mineral gets its name from being found in Labrador, Canada. It has other locations worldwide. Labradorite is found in large crystal masses.
The piece Jack is showing is a beautiful blue. All of the Pebble Pups and Junior members of the Colorado Springs Mineralogical Society (CSMS) were given a specimen of this to take home. Jack, one of our most hard working Pebble Pups is demonstrating the effect of labradorescence. Jack is working very hard on the merit badge program and is going to bring one of his friends to the next CSMS Pebble Pup/Junior meeting.
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