An interesting sample of gold ore originally composed of gold telluride – calaverite, which was subsequently subjected to a heat treatment called roasting. This process created gold which then formed spherical aggregates up to 4 mm in size on the surface.
USA, Sulfides, Medium
Calaverite (roasted ore)
Out of stock
Location: Cripple Creek; Colorado; USA
Dimension: 56 × 50 × 23 mm
Tento produkt již nemáme v nabídce, ale pokud jej poptáváte, můžeme Vám nabídnout jiný, jakmile se v nabídce objeví.
