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Is blood stone a rock?
Yes it is. Stone and igneous rock are the same because they are on the earths outer solid layer. The lithosphere is made of rock. The three major groups of rock are: igneous, metamorphic, and sedimentary. Stone and rock is naturally occurring solid aggregate of minerals and/ or mineraliod.
What is the characteristics of obsidian?
Obsidian is a type of igneous rock that cools instantly after a volcano explosion. Obsidian forms when lava enters the water directly after the volcano erupts. The water instantly cools the lava leaving the mineral crystals no time grow. obsidian does not have any minerals and is often classed as a mineraliod. Obsidian can be brown, black, or black and white. Obsidian can often be found in the shape of arrow heads because it was used as a primitive arrow. obsidian is still used to make scalpels.
