What's the color of limestone?

Related questions

1. Does limestone make water blue?
2. Does limestone weather easily?
3. What's the hardness of limestone?
4. What is limestone mined for?
5. Is Limestone good for soil?
6. What type of rock is limestone?
7. How is limestone mined?
8. How limestone is formed?
9. What is the hardest rock?
10. Is limestone hard or soft?

Tags

1. #usually
2. #black
3. #brown
4. #however
5. #impurities
6. #color
7. #carbon
8. #yellow
9. #sedimentary
10. #carbonate
11. #colored
12. #while
13. #oxide
14. #limestone
15. #calcium
16. #largely
17. #composed
18. #white