Parameters

Marble

Ultrabasite

Andesite

Rr

Slightly rough

Very rough

Slightly rough

3

6

3

Rw

Slightly weathered

Highly weathered

Highly weathered

5

1

1

Rf

Hard infiling < 5 mm

None

Hard

4

6

2

Jv

4.38

6.7

39.4

SCR

12

13

6

SR

68

58

22

GSI

55 - 60

50 - 55

20 - 30

Quality

Good

Fair

Poor