Petrified Oak Slab

Petrified oak slabs are a unique type of slab available through commands or by upgrading from legacy versions - unlike all other slabs, they are unobtainable through conventional Survival gameplay. $$, petrified oak slabs are also available in the Creative mode inventory.

Obtaining
Petrified oak slabs are unobtainable in new Survival worlds.

Breaking
Petrified oak slabs require a pickaxe to mine. When broken, they drop themselves $$, and regular oak slabs $$.

Crafting
Petrified oak slabs are uncraftable in current versions without the use of a data pack or behavior pack.

Upgrading
Petrified oak slabs are obtainable and craftable as one would expect in versions released before Java Edition 1.3.1 (snapshot 12w17a) or Pocket Edition v0.7.3 alpha, in which they are the only wooden slab type.

Usage
Petrified oak slabs are functionally still slabs, and share the majority of their placement, collision and other such behaviors with normally obtainable slabs.

Before unique slabs corresponding to different wooden planks types were added, wooden slabs were treated like other stone-type slabs. They required a pickaxe to break, had a blast resistance greater than normal planks, had stone sounds and fire could not spread to them.

Differences from normal slabs
Petrified oak slabs are mostly notable for where their behavior diverges from that expected of their name and appearance.

Unlike other wooden slabs:
 * Petrified oak slabs make the sounds characteristic of stone.
 * They require a pickaxe to mine.
 * If broken with anything but a pickaxe, they will drop nothing.
 * They are not flammable.
 * They cannot be used as fuel in a furnace.
 * They have more blast resistance.
 * Note blocks placed on top of them produce bass drum sounds, similarly to other stone-like blocks.

Unlike other slabs in general:
 * They cannot be crafted, or indeed obtained normally in Survival.
 * They do not have a direct full-block equivalent.
 * $$ they do not drop themselves, but rather drop another type of slab: the oak slab.

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