rgt.register_item("iron_ingot", {
    inventory_image = "rgt_iron_ingot.png",
})

rgt.register_item("iron_lump", {
    inventory_image = "rgt_iron_lump.png",
})

rgt.register_node("iron_block", {
    tiles = {"rgt_iron_block.png"},
    groups = {stone = 1}
})

rgt.register_node("iron_ore", {
    tiles = {"rgt_stone.png^rgt_iron_ore.png"},
    drop = "iron_lump",
    groups = {stone = 1}
})

minetest.register_ore {
    ore_type = "scatter",
    ore = "iron_ore",
    wherein = "stone",
    
    clust_scarcity = 4 * 4 * 4,
    clust_num_ores = 8,
    clust_size = 3,
    
    noise_params = {
        offset = 0,
        scale = 1,
        spread = {x = 100, y = 100, z = 100},
        seed = 23,
        octaves = 3,
        persistence = 0.7
    },
}




rgt.register_item("gold_ingot", {
    inventory_image = "rgt_gold_ingot.png",
})

rgt.register_item("gold_lump", {
    inventory_image = "rgt_gold_lump.png",
})

rgt.register_node("gold_block", {
    tiles = {"rgt_gold_block.png"},
    groups = {stone = 1}
})

rgt.register_node("gold_ore", {
    tiles = {"rgt_stone.png^rgt_gold_ore.png"},
    drop = "gold_lump",
    groups = {stone = 1}
})

minetest.register_ore {
    ore_type = "scatter",
    ore = "gold_ore",
    wherein = "stone",
    
    clust_scarcity = 4 * 4 * 4,
    clust_num_ores = 8,
    clust_size = 3,
    
    noise_params = {
        offset = 0,
        scale = 1,
        spread = {x = 100, y = 100, z = 100},
        seed = 9858,
        octaves = 3,
        persistence = 0.7
    },
}