gold and silver found cracking open my nugget of vein material,

so there i was unloading my big ass nugget of turquoise or whatever it was vein material,.. and we looked closer and saw what looks to be gold halo'ed by silver material,.. i dont know if it is exactly silver or something else,.. but it sure looks tasty,.. maybe some geologist or someone could give me a clue? this ore was found on the surface and is close in proximity to another rich gold/silver/copper mine in the area, the apache chief!! please share so we can find out what this stuff is! many thanks