Ferberite with Arsenopyrite, Siderite - Portugal, Panasqueira Mines

No, this is not cuprite! - EarthWonders Newsletter #7

specimen
Details
ColorsBlack, Silver, Cream
SizeMedium
Dimensions9.0 x 5.5 x 2.5 cm
Description
Neat combination specimen from this classic locality. A cluster of lustrous bladed black metallic ferberite crystals is posting a grouping of double terminated lustrous silver metallic arsenopyrite crystals measuring 3.5 cm in length and double terminated. Crystallized siderite is present as well. This is in terrific condition all around.
Origin