coconut cake ,lol, no not in a hole ,a rock high wall,a pocket , theres a massive hydro thermal deposit here in my area ,it actualy outcrops in several locations in a 40 sq mile area ,i 've been picking at it for years, trying to see what different mins i can find,its a lead /zinc,deposit, with many associative mins, i am on the hunt paticularly for whats called (ruby sphalerite),its a red gemy looking form of what i've found all over this deposit, but as for calcite you asked,it comes in almost every color,and colorless also, its not used for any gemy goodys, to soft, but the clear stuff one time was used for sight optics,world war 2 era ,but it floresces,under UV lights, black lights so it is collectible ,but is most often found in white/milky variaty .