Ferberite, Arsenopyrite, Siderite - image 1
Ferberite, Arsenopyrite, Siderite - image 2
Ferberite, Arsenopyrite, Siderite - image 3

Ferberite, Arsenopyrite, Siderite

Unknown Owner
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An exceptional tabular cluster of highly lustrous, well-terminated (some even doubly) bladed Ferberite crystals. The widest of the blades is 4.7 cm across. To make the piece even more extraordinary, there is a very well-developed 1.6 cm Arsenopyrite crystal on the bottom, as well as numerous mm-size Siderite crystals along the back and bottom. There are also five Tetrahedrite (?) crystals (in the second close-up), two singles and one three-crystal cluster, on the Ferberite. Ex. Charlie Key stock.

Product details

SpeciesSiderite, Ferberite, Arsenopyrite
SizeSmall Cabinet
Dimensions8.6 x 7.0 x 3.0 cm
Added on10/23/2024
LocalityPortugal, Panasqueira Mines

Known provenance

DateCollectorAcquisition price
08/2024Unknown OwnerNot disclosed
—The ArkenstoneNot disclosed

Learn more

Siderite
Mineral guide
Learn about Siderite
warm-toned iron carbonate with sharp rhombohedra and occasional gemmy crystals; prized for luster, classic localities Harz, Panasqueira, Dal’negorsk.
Siderite
Regional guide
Siderite from Panasqueira Mines, Portugal
from Panasqueira, Portugal — lustrous tan to cream rhombohedra in rosettes and masses; a world-class, modern classic from a magmatic-hydrothermal vein.