I was able to spend the afternoon at our Indian Mills School’s Out Site today. The kids were so excited to introduce me to their new Pet Rock. This is the coolest rock I have ever seen! The kids explained that this rock is a “Popcorn Rock.”
Popcorn rock is a light weight, aragonite limestone crystal found at the outcrops in the Great Basin of the western United States. The popcorn-like crystals are formed from limestone formations. This limestone contains calcite and other trace minerals. When the limestone is completely submerged in vinegar, the calcite crystals are released and then regrown as aragonite crystals. The aragonite will harden over time and may be kept forever! The crystals grow back and look just like popcorn. So cool.
I love it when kids teach me new things!