diff --git a/technic_worldgen/oregen.lua b/technic_worldgen/oregen.lua
index c48e358..ec9386d 100644
--- a/technic_worldgen/oregen.lua
+++ b/technic_worldgen/oregen.lua
@@ -1,34 +1,77 @@
+local uranium_params = {offset = 0, scale = 1, spread = {x = 100, y = 100, z = 100}, seed = 420, octaves = 3, persist = 0.7}
+local uranium_threshhold = 0.55
+
+local chromium_params = {offset = 0, scale = 1, spread = {x = 100, y = 100, z = 100}, seed = 421, octaves = 3, persist = 0.7}
+local chromium_threshhold = 0.55
+
+local zinc_params = {offset = 0, scale = 1, spread = {x = 100, y = 100, z = 100}, seed = 422, octaves = 3, persist = 0.7}
+local zinc_threshhold = 0.5
+
 minetest.register_ore({
-	ore_type       = "scatter",
-	ore            = "technic:mineral_uranium",
-	wherein        = "default:stone",
-	clust_scarcity = 10*10*10,
-	clust_num_ores = 4,
-	clust_size     = 3,
-	height_min     = -300,
-	height_max     = -80,
+	ore_type         = "scatter",
+	ore              = "technic:mineral_uranium",
+	wherein          = "default:stone",
+	clust_scarcity   = 8*8*8,
+	clust_num_ores   = 4,
+	clust_size       = 3,
+	height_min       = -300,
+	height_max       = -80,
+	noise_params     = uranium_params,
+	noise_threshhold = uranium_threshhold,
 })
 
 minetest.register_ore({
-	ore_type       = "scatter",
-	ore            = "technic:mineral_chromium",
-	wherein        = "default:stone",
-	clust_scarcity = 10*10*10,
-	clust_num_ores = 2,
-	clust_size     = 3,
-	height_min     = -31000,
-	height_max     = -100,
+	ore_type         = "scatter",
+	ore              = "technic:mineral_chromium",
+	wherein          = "default:stone",
+	clust_scarcity   = 8*8*8,
+	clust_num_ores   = 2,
+	clust_size       = 3,
+	height_min       = -200,
+	height_max       = -100,
+	noise_params     = chromium_params,
+	noise_threshhold = chromium_threshhold,
 })
 
 minetest.register_ore({
-	ore_type       = "scatter",
-	ore            = "technic:mineral_zinc",
-	wherein        = "default:stone",
-	clust_scarcity = 9*9*9,
-	clust_num_ores = 4,
-	clust_size     = 3,
-	height_min     = -31000,
-	height_max     = 2,
+	ore_type         = "scatter",
+	ore              = "technic:mineral_chromium",
+	wherein          = "default:stone",
+	clust_scarcity   = 6*6*6,
+	clust_num_ores   = 2,
+	clust_size       = 3,
+	height_min       = -31000,
+	height_max       = -200,
+	flags            = "absheight",
+	noise_params     = chromium_params,
+	noise_threshhold = chromium_threshhold,
+})
+
+minetest.register_ore({
+	ore_type         = "scatter",
+	ore              = "technic:mineral_zinc",
+	wherein          = "default:stone",
+	clust_scarcity   = 8*8*8,
+	clust_num_ores   = 4,
+	clust_size       = 3,
+	height_min       = -32,
+	height_max       = 2,
+	noise_params     = zinc_params,
+	noise_threshhold = zinc_threshhold,
+})
+
+minetest.register_ore({
+	ore_type         = "scatter",
+	ore              = "technic:mineral_zinc",
+	wherein          = "default:stone",
+	clust_scarcity   = 6*6*6,
+	clust_num_ores   = 4,
+	clust_size       = 3,
+	height_min       = -31000,
+	height_max       = -32,
+	flags            = "absheight",
+	noise_params     = zinc_params,
+	noise_threshhold = zinc_threshhold,
 })
 
 if technic.config:get_bool("enable_marble_generation") then