"I recently broke open a volcanic rock that my grandmother gave me when I was young. The rock is primarily black but contains various colors and gold-like specks. When a piece broke off the top, I noticed what appeared to be an impression of a stone crab leg, prompting me to stop breaking it apart. I have been unable to find anything online that closely resembles it. Upon researching similar rocks, it appears to contain multiple types of minerals or materials. Additionally, the fragments are magnetic, and parts of the rock resemble petrified wood and a crab fossil. However, I have not found anything comparable in my search. I initially believed it to be a simple lava rock, but its unique characteristics have made me very curious about its true composition and origin."

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