Related Clues:

• With 'of' and 51-Across, a facial moisturizer
• Efflux from Etna
• Natural resource
• Pelée spew
• Drilling goal
• Slow flow
• It can be hydrogenated
• Curved part of a lamp
• Element in some lamps
• Igneous rock source
• Pompeii was covered in it
• Volcanic effluent
• Iraqi resource
• Sunflower seed product
• Beachgoer's aid