raw pegmatite feldspar igneous rock terracotta pattern, rusty orange red golden amber yellow horizontal background, coarse light

aluminosilicate amber background basic bright brown burnt closeup coarse common composition crystalline crystals dark deep detailed eroded feldspar golden granite granitic group horizontal igneous iron large light macro magnesium material melt melted melting mica mineral minerals molten orange pattern pegmatite pegmatites phlogopite potassium quartz raw recrystallized red rock rocks rusty structure terracotta texture textured yellow