These were discovered to be, not a part of Britain as was imagined at first, but a separate group by themselves, now known as the Scillies; hence it is improbable that the Phoenicians ever worked the tin-mines in Cornwall.
Small islands off the coast of north-west Spain, the headlands of that same coast, the Scillies, Cornwall, the British Isles as a whole, have all in turn been suggested.
Neither the Spanish islands nor the Scillies contain tin, at least in serious quantities.
How would you define scillies? Add your definition here.