Quote:
Originally posted by cstreit
WHat's the story behind this rock formation? How does this form? It's clearly not an "extrusion" because nothing in nature ist that shape...
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Many minerals will reform in their natural crystalline structure after being liquified.
When you find natural quartz deposits, all the quartz rocks will be distinctly shaped.
When you dissolve salt in boiling water, then let the water evaporate, the salt will reform into crystals
These formations pictured are of a mineral called basalt. It was liquified in volcanic activity, then it cooled and formed into it's natural crystal shape.