wherein = -- node in which geodes generate, set to mapgen_stone unless you need it to spawn in a specific place,
y_min = -- minimum level at which geodes generate,
y_max = -- maximum level at which geodes generate,
scarcity = -- rarity of geodes, rarest at 80, lower values not recommended unless you use generation chance,
core = -- node comprising innermost part of geode, usually a crystal such as amethyst,
core_alt = -- replacement for node comprising innermost part of geode, usually a budding node which spawns plantlike drawtype crystal nodes on all sides,
core_alt_chance = -- chance of core_alt replacing core,
shell = -- array of nodes comprising geode shell, from outermost to innermost,
radius_min = -- minimum radius of geode cavity,
radius_max = -- maximum radius of geode cavity,
generation_chance = -- % chance a geode spawns given other conditions, lets geodes be even rarer,