Electron and Confocal Microscopy Laboratory, Agricultural Research Service, U. S. Department of Agriculture.
long thin sticks of ice (but not icicles they are 1 mm long and they are snowflakes)
needle crystal
Show-Me Rockhounds Kansas City
A club for people in Kansas City, MO who enjoy collecting rocks, minerals, fossils, gems, and crystals
Show-Me Rockhounds Kansas City 