Calcite
At a glance
- Type
- Mineral
- Group
- Carbonate
- Crystal system
- Trigonal
- Hardness
- Medium (3 to 5.5)
- Colour
- Colourless, White, Yellow
- Lustre
- Glassy
- Use
- Building, Industry
- Difficulty in WildGuessr
- Medium
Did you know?
- Clear calcite splits light in two, so text seen through it appears doubled.
- Calcite fizzes in weak acid, so geologists carry a little bottle of dilute acid to test for it.
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 Q171917 · All stones · All entries