Dogtooth Spar - Wind Cave national park
Vugs are common along tour routes and other places where chunks of rock have been broken or fallen off the wall. Vugs are very similar to geodes and are usually lined with calcite crystals. Because of the cryst... More
Jewel Cave Gypsum Beard - Public Domain image, National Parks Gallery
A dense collection of gypsum crystals and fibers forms a Gypsum Beard with calcite crystals behind
Crystalline Boxwork - Wind Cave national park
When viewed from the right angle in the right light, the calcite crystals that make up boxwork sparkle in the light.
Dogtooth Spar next to the 89 Stairs
Vugs are common along tour routes and other places where chunks of rock have been broken or fallen off the wall. Vugs are very similar to geodes and are usually lined with calcite crystals. Because of the cryst... More
Tourist Attraction - Formation Room Flowstone
A large area of flowstone and draperies in the Formation Room, with calcite crystals visible on the walls
Jewel Cave Gypsum Beard - Public Domain image, National Parks Gallery
A thin strand of gypsum hangs from a beard, surrounded by calcite crystals
Crystal Snail, National Parks gallery
Can you see the snail? It has been covered with calcite crystals inside the caves.
Frostwork, Wind Cave National Park, 2013.
Frostwork is made of calcium carbonate (just like calcite); however, it has a different internal crystalline structure. When the crystals are large, you can distinguish the crystal habit of aragonite from calci... More
Frostwork, Wind Cave National Park, 2014.
Frostwork is made of calcium carbonate (just like calcite); however, it has a different internal crystalline structure. When the crystals are large, you can distinguish the crystal habit of aragonite from calci... More
Dogtooth spar deposits, Wind Cave National Park, 2015.
Dogtooth spar is a speleothem (a cave deposit composed of a secondary mineral deposit) found in limestone caves. It consists of very large calcite crystals that resemble, as the name suggests, dogs' teeth. The ... More
Cave Drip, National Parks gallery
A small droplet of water at the base of this soda straw (stalactite) is depositing calcite crystals that will help this fragile soda straw grow at an average rate of one inch every 100 years!
Snail covered by calcite crystals, Oregon Caves National Monument & Pr...
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