Slate

At a glance
- Type
- Rock
- Group
- Metamorphic rock
- Crystal system
- None (a rock)
- Hardness
- Medium (3 to 5.5)
- Colour
- Grey, Black
- Lustre
- Dull
- Use
- Building
- Difficulty in WildGuessr
- Medium
Did you know?
- Children once wrote their lessons on small slates with chalk, long before paper became cheap.
- Good billiard tables have a slab of slate under the cloth because slate stays flat and smooth.
Could you guess it from clues?
WildGuessr picks a secret animal, plant, fungus, stone, prehistoric creature or space object and you ask yes-or-no questions about it, such as its group or where it grows. The fewer clues you need, the more points you score.
Similar stones
Classification, names and conservation status come from Wikidata (CC0), the photo from Wikimedia Commons. Wikidata Q207079 · All stones · All entries

