diff --git a/kubejs/data/tfc/worldgen/configured_feature/vein/normal_sphalerite.json b/kubejs/data/tfc/worldgen/configured_feature/vein/normal_sphalerite.json
index c81e2c790..967e9b9fd 100644
--- a/kubejs/data/tfc/worldgen/configured_feature/vein/normal_sphalerite.json
+++ b/kubejs/data/tfc/worldgen/configured_feature/vein/normal_sphalerite.json
@@ -9,7 +9,7 @@
     "max_y": {
       "absolute": 75
     },
-    "size": 20,
+    "size": 40,
     "density": 0.6,
     "blocks": [
       {
@@ -18,16 +18,16 @@
         ],
         "with": [
           {
-            "weight": 20,
-            "block": "tfc:ore/poor_sphalerite/quartzite"
+            "weight": 35,
+            "block": "gtceu:tfc_quartzite_sulfur_ore"
           },
           {
-            "weight": 50,
-            "block": "tfc:ore/normal_sphalerite/quartzite"
+            "weight": 40,
+            "block": "gtceu:tfc_quartzite_sphalerite_ore"
           },
           {
-            "weight": 30,
-            "block": "tfc:ore/rich_sphalerite/quartzite"
+            "weight": 25,
+            "block": "gtceu:tfc_quartzite_pyrite_ore"
           }
         ]
       },
@@ -37,16 +37,16 @@
         ],
         "with": [
           {
-            "weight": 20,
-            "block": "tfc:ore/poor_sphalerite/slate"
+            "weight": 35,
+            "block": "gtceu:tfc_slate_sulfur_ore"
           },
           {
-            "weight": 50,
-            "block": "tfc:ore/normal_sphalerite/slate"
+            "weight": 40,
+            "block": "gtceu:tfc_slate_sphalerite_ore"
           },
           {
-            "weight": 30,
-            "block": "tfc:ore/rich_sphalerite/slate"
+            "weight": 25,
+            "block": "gtceu:tfc_slate_pyrite_ore"
           }
         ]
       },
@@ -56,16 +56,16 @@
         ],
         "with": [
           {
-            "weight": 20,
-            "block": "tfc:ore/poor_sphalerite/phyllite"
+            "weight": 35,
+            "block": "gtceu:tfc_phyllite_sulfur_ore"
           },
           {
-            "weight": 50,
-            "block": "tfc:ore/normal_sphalerite/phyllite"
+            "weight": 40,
+            "block": "gtceu:tfc_phyllite_sphalerite_ore"
           },
           {
-            "weight": 30,
-            "block": "tfc:ore/rich_sphalerite/phyllite"
+            "weight": 25,
+            "block": "gtceu:tfc_phyllite_pyrite_ore"
           }
         ]
       },
@@ -75,16 +75,16 @@
         ],
         "with": [
           {
-            "weight": 20,
-            "block": "tfc:ore/poor_sphalerite/schist"
+            "weight": 35,
+            "block": "gtceu:tfc_schist_sulfur_ore"
           },
           {
-            "weight": 50,
-            "block": "tfc:ore/normal_sphalerite/schist"
+            "weight": 40,
+            "block": "gtceu:tfc_schist_sphalerite_ore"
           },
           {
-            "weight": 30,
-            "block": "tfc:ore/rich_sphalerite/schist"
+            "weight": 25,
+            "block": "gtceu:tfc_schist_pyrite_ore"
           }
         ]
       },
@@ -94,16 +94,16 @@
         ],
         "with": [
           {
-            "weight": 20,
-            "block": "tfc:ore/poor_sphalerite/gneiss"
+            "weight": 35,
+            "block": "gtceu:tfc_gneiss_sulfur_ore"
           },
           {
-            "weight": 50,
-            "block": "tfc:ore/normal_sphalerite/gneiss"
+            "weight": 40,
+            "block": "gtceu:tfc_gneiss_sphalerite_ore"
           },
           {
-            "weight": 30,
-            "block": "tfc:ore/rich_sphalerite/gneiss"
+            "weight": 25,
+            "block": "gtceu:tfc_gneiss_pyrite_ore"
           }
         ]
       },
@@ -113,16 +113,16 @@
         ],
         "with": [
           {
-            "weight": 20,
-            "block": "tfc:ore/poor_sphalerite/marble"
+            "weight": 35,
+            "block": "gtceu:tfc_marble_sulfur_ore"
           },
           {
-            "weight": 50,
-            "block": "tfc:ore/normal_sphalerite/marble"
+            "weight": 40,
+            "block": "gtceu:tfc_marble_sphalerite_ore"
           },
           {
-            "weight": 30,
-            "block": "tfc:ore/rich_sphalerite/marble"
+            "weight": 25,
+            "block": "gtceu:tfc_marble_pyrite_ore"
           }
         ]
       }