| LAVA | It emerges, naturally, as hot stuff (4) |
| GINGER | . Sandy is regarded as hot stuff! (6) |
| SITE | Location of some animals, it emerges (4) |
| FOAM | It emerges from opening a 12, initially (4) |
| AGES | Improves naturally, as wine |
| OVEN | It's as hot as an ___ in here! |
| SWIT | Actress best known for her role as 'Hot Lips' Houlihan in M.A.S.H. (4) |
| BREW | Prepare, as hot tea |
| IOLITE | It's present in metamorphic rock and vitriol, it emerges |
| EMISSION | It emerges as a key assignment (8) |
| IPSOFACTO | Thereby it emerges from the lips of actor (4,5) |
| OFCOURSE | Naturally, as might be expected (2,6) |
| TSUNAMI | Disaster, naturally, as I have to hold article back |
| COBALT | Silvery-white magnetic metallic element occurring naturally as a mineral |
| GROWWILD | Occur naturally, as flowers |
| SILICA | Dioxide that occurs naturally as quartz, cristobalite and tridymite (6) |
| CARBON | Element occurring naturally as diamond or graphite (6) |
| ERODES | Creates naturally, as a gorge |
| COPPERSULPHATE | Salt found naturally as chalcanthite |
| METEORITE | More unlikely to welcome alien, it emerges at first, as arrival from outer space (9) |
