Which is harder sandstone or limestone?

Related questions

1. What is limestone used for in everyday life?
2. Can you drink limestone water?
3. Does rain affect limestone?
4. Does limestone absorb water?
5. What's the color of limestone?
6. What is the hardness of limestone?
7. What is limestone mined for?
8. Can you paint limestone?
9. What happens when you put limestone in water?
10. How strong is limestone?

Tags

1. #density
2. #pressure
3. #under
4. #better
5. #however
6. #limestone
7. #resistance
8. #while
9. #contain
10. #content
11. #heavy
12. #impact
13. #strong
14. #makes
15. #harder
16. #fragments
17. #granules
18. #quartz
19. #primarily
20. #against
21. #provides
22. #sandstone
23. #composed
24. #other
25. #feldspar