Ferberite, Quartz, Fluorapatite - image 1

Ferberite, Quartz, Fluorapatite

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Source volume: 45, issue: 1, PDF page: 38. Label: Figure 65. Fluorapatite with quartz and ferberite, 7.6 cm, from Panasqueira. Stuart Wilensky specimen and photo.

Product details

Species
Ferberite, Quartz, FluorapatiteAbout Ferberite →
Added on10/22/2024
Locality
Portugal, Panasqueira MinesRegional guide →
Publications
  • Mineralogical Record Volume: 45, Issue: 1 page 38

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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.