A sedimentary geode is an openable item that can sometimes be obtained when mining copper, tin, iron, coal, mithril, adamantite, luminite, or runite rocks.
When a sedimentary geode is opened, it yields one of the rewards below and is destroyed. The "open-all" option can be used by right-clicking the geode, and this automatically opens all types of geodes in the player's backpack, one every two ticks. Multiple geodes can be opened each tick by pressing the open option manually.
With sedimentary geodes being accessible by free-to-play players, the rewards are all free-to-play.
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- ^ a b c d e f g h There is further information on this drop; see the associated page for details.
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