What am I (redux) Traditional Cache

I had to archive and relocate this cache due to a muggle who just tossed it away at the original location. Thanks to FLisOK for rescuing the container and contents. The cache can only be accessed from inside The Florida Botanical Gardens and hours are 7:00 AM to 5:00 PM. It is in the nature trail area and pets are not allowed.If you take the fence line just to the north of the trail entrance toward the cache it will be the easiest and less bushwhacking way to go. I have been around for about 4.6 million years just hanging around. Most of the time I stay where I was originally formed and have a unique name and no two of me are alike. However sometimes I fall out of place and put on a spectacular display but only for a moment. I typically have three names but when I come to rest I have only one name. What am I? If you can't get the right answer don't worry. Come find me and it might help you.