It's kinda tough to say "for sure" what mine it's from, without paperwork or a reliable history of each piece, but the turquoise on this buckle is probably from either Turquoise Mountain or Ithaca Peak. Those are both part of the Kingman mining complex, but marketed as separate from "regular" Kingman, because they're obviously a bit different. 🙂 Either is worth a good bit more than I paid. 😉