Ferberite with Siderite on Chalcopyrite and Quartz - image 1
Ferberite with Siderite on Chalcopyrite and Quartz - image 2
specimen video

Ferberite with Siderite on Chalcopyrite and Quartz

$3,500.00

VisaMastercardAmerican ExpressPayPalPayPal Pay In 4Discover·
  • $40.00 shipping
  • Seller offers an extended return window of up to 30 days
  • USAShips from USA

Crystal Classics
Crystal ClassicsFeatured
Tucson, Arizona, USA
7,543 for sale·132 sold
Panasqueira mine is not only Europe's most important tungsten mine, but also one of the continent's most important modern mineral producing localities. One of the mineral species for which it is justly famous is Ferberite - the main ore of tungsten. At Panasqueira mine, large, perfectly formed freestanding bladed crystals are well known and represent some of the world's best examples of the species. This enormous specimen - a colossal display plate measuring 22 cm in length - is liberally covered in excellent upright black, glossy, bladed Ferberite crystals to 3 cm across, associated with Quartz and an encrusting layer of finely crystallized orange Siderite. The whole display surface is in excellent condition and makes for an impressive Panasqueira piece. Weighing in at over 3.5 kg, the remarkable density of tungsten can be fully understood.

Product details

Species
Ferberite, Quartz, SideriteAbout Ferberite →
SizeLarge Cabinet
Dimensions22.0 x 12.8 x 7.5 cm
Listed on05/10/2025
Locality
Portugal, Panasqueira MinesRegional guide →
SKUCC49086

Learn more

Ferberite
Mineral guide
Learn about Ferberite
iron-rich wolframite with stout blade-like prisms and deep black luster; forms in hydrothermal tin-tungsten deposits; prized on quartz or fluorite.
Ferberite
Regional guide
Ferberite from Panasqueira Mines, Portugal
Panasqueira ferberite is the European classic against which most crystallized ferberite is judged. The best specimens are not merely black ore crystals: they are sculptural, high-luster, metallic to submetallic blades and thick tabular prisms, commonly striated, sometimes doubly terminated, and often set in the distinctive Panasqueira palette of white quartz, pearly muscovite, brown siderite, silvery arsenopyrite, purple to green fluorapatite, cassiterite, pyrite, chalcopyrite, calcite, and dolomite. In a cabinet, a good piece reads immediately as Panasqueira—black, heavy, sharp, and architectural, with the mine’s characteristic quartz-vein openness preserved in miniature.