I'm going to Duloe later this year.
I've also seen a stone with a fantastic streak of quarz in this year to. Part of a circle. . but I can't remember which one! (I've been on a circle-fest this year!). I'll check me notes . . .
The ore that the copper tools were smelted from appears as a seam in a bed of white quartz. (The moon is setting quite far in the north tonight).