diff --git a/builtin/game/register.lua b/builtin/game/register.lua
index f7ebdee9a..c0c579a25 100644
--- a/builtin/game/register.lua
+++ b/builtin/game/register.lua
@@ -226,13 +226,6 @@ function core.register_alias(name, convert_to)
 	end
 end
 
-local register_biome_raw = core.register_biome
-core.registered_biomes = {}
-function core.register_biome(biome)
-	core.registered_biomes[biome.name] = biome
-	register_biome_raw(biome)
-end
-
 function core.on_craft(itemstack, player, old_craft_list, craft_inv)
 	for _, func in ipairs(core.registered_on_crafts) do
 		itemstack = func(itemstack, player, old_craft_list, craft_inv) or itemstack
@@ -375,6 +368,13 @@ end
 -- Callback registration
 --
 
+local register_biome_raw = core.register_biome
+core.registered_biomes = {}
+function core.register_biome(biome)
+	core.registered_biomes[biome.name] = biome
+	register_biome_raw(biome)
+end
+
 local function make_registration()
 	local t = {}
 	local registerfunc = function(func) table.insert(t, func) end
@@ -387,6 +387,21 @@ local function make_registration_reverse()
 	return t, registerfunc
 end
 
+local function make_registration_wrap(name)
+	local list = {}
+	local full_name = "register_"..name
+	local orig_func = core[full_name]
+	core[full_name] = function(def)
+		table.insert(list, def)
+		orig_func(def)
+	end
+	return list
+end
+
+
+core.registered_ores = make_registration_wrap("ore")
+core.registered_decorations = make_registration_wrap("decoration")
+
 core.registered_on_chat_messages, core.register_on_chat_message = make_registration()
 core.registered_globalsteps, core.register_globalstep = make_registration()
 core.registered_playerevents, core.register_playerevent = make_registration()
diff --git a/doc/lua_api.txt b/doc/lua_api.txt
index fc8b02e50..eab0cad93 100644
--- a/doc/lua_api.txt
+++ b/doc/lua_api.txt
@@ -416,6 +416,12 @@ the global `minetest.registered_*` tables.
 * `minetest.register_craftitem(name, item definition)`
     * added to `minetest.registered_items[name]`
 
+* `minetest.register_ore(ore definition)`
+    * added to `minetest.registered_ores`
+
+* `minetest.register_decoration(decoration definition)`
+    * added to `minetest.registered_decorations`
+
 Note that in some cases you will stumble upon things that are not contained
 in these tables (e.g. when a mod has been removed). Always check for
 existence before trying to access the fields.
@@ -2193,19 +2199,23 @@ Please note that forceloaded areas are saved when the server restarts.
 
 ### Global tables
 * `minetest.registered_items`
-    * List of registered items, indexed by name
+    * Map of registered items, indexed by name
 * `minetest.registered_nodes`
-    * List of registered node definitions, indexed by name
+    * Map of registered node definitions, indexed by name
 * `minetest.registered_craftitems`
-    * List of registered craft item definitions, indexed by name
+    * Map of registered craft item definitions, indexed by name
 * `minetest.registered_tools`
-    * List of registered tool definitions, indexed by name
+    * Map of registered tool definitions, indexed by name
 * `minetest.registered_entities`
-    * List of registered entity prototypes, indexed by name
+    * Map of registered entity prototypes, indexed by name
 * `minetest.object_refs`
-    * List of object references, indexed by active object id
+    * Map of object references, indexed by active object id
 * `minetest.luaentities`
-    * List of Lua entities, indexed by active object id
+    * Map of Lua entities, indexed by active object id
+* `minetest.registered_ores`
+    * List of registered ore definitions.
+* `minetest.registered_decorations`
+    * List of registered decoration definitions.
 
 Class reference
 ---------------