A silver rock is a protruding rock containing silver ore. A player with a Mining level of 20 or higher can mine silver ore from rocks found in various mines, granting 40 Mining experience for each ore mined.
Free to play sites
Pay to Play sites
Silver ore, like all other mined rocks, respawns at a rate directly proportional to the number of people in the rock's RuneScape world. If the world is empty, the ore respawns in 2 minutes; if it is full (with 2000 players), it respawns in 1 minute. Thus the respawn rate of silver ore is
where x is the number of players in the world.
A table of respawn rates is given below.