Add cassiterite to peg ores.

mineral/init.lua

@@ -34,4 +34,5 @@ mineral.noise.Iron=GetNoiseParams()
 mineral.noise.Tin=GetNoiseParams()
 
 dofile(modpath.."/skarn.lua")
+dofile(modpath.."/pegmatite.lua")
 

mineral/pegmatite.lua

@@ -0,0 +1,42 @@
+--
+-- Pegmatite deposit
+--
+
+local function GetNoiseParams()
+ return {
+  scale=1, offset=0, seed=rocksl.GetNextSeed(), octaves=1, persist=1,
+  spread={ x=100, y=100, z=100 } }
+end
+
+-- ores have to be redefined for pegmatite background
+
+--   Ore/Mineral    Percent
+-- Spodumene        7%
+-- Muscovite (mica) 7%
+-- Kyanite          5%
+-- Lepidolite       2.5%
+-- Tantalite        2%
+-- Cassiterite      1.5%
+-- Wolframite       1%
+-- Pollucite        0.1%
+
+
+-- Cassiterite
+minetest.register_node( "mineral:pegmatite_cassiterite", {
+	description = S("Cassiterite"),
+	tiles = { "rocks_Pegmatite.png^mineral_cassiterite.png" },
+	groups = {cracky=3},
+	is_ground_content = true, sounds = default.node_sound_stone_defaults(),
+})
+
+minetest.register_ore({
+ wherein="rocks:pegmatite",
+ ore="mineral:pegmatite_cassiterite",
+ clust_size=3,
+ clust_num_ores=9,
+ clust_scarcity=4^3,
+ noise_treshold=-0.1,
+ noise_params=mineral.noise.Tin
+ })
+
+-- ~ Tomas Brod