Scoria
At a glance
- Type
- Rock
- Group
- Igneous rock
- Crystal system
- None (a rock)
- Hardness
- Medium (3 to 5.5)
- Density
- Light (under 2.5 g/cm³)
- Occurs in
- Igneous rocks
- Foliation
- Not layered
- Colour
- Black, Red, Brown
- Lustre
- Dull
- Use
- Building
- Difficulty in WildGuessr
- Medium
Did you know?
- Scoria is so full of gas bubbles that it is far lighter than ordinary lava rock, but unlike pumice it usually sinks.
- The name comes from the Greek skoria, meaning refuse or slag.
Could you guess it from clues?
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Similar stones
Classification, names and conservation status come from Wikidata (CC0), the photo from Wikimedia Commons. Wikidata Q6642389 · All stones · All entries