Quartz with Cassiterite and Ferberite - image 1
Quartz with Cassiterite and Ferberite - image 2
Quartz with Cassiterite and Ferberite - image 3
Quartz with Cassiterite and Ferberite - image 4
Quartz with Cassiterite and Ferberite - image 5
specimen video

Quartz with Cassiterite and Ferberite

Unknown Owner

Product details

Species
Ferberite, Quartz, CassiteriteAbout Ferberite →
SizeSmall Cabinet
Dimensions6.0 x 8.0 cm
Added on06/16/2025
Locality
Portugal, Panasqueira MinesRegional guide →

Known provenance

DateCollectorAcquisition price
06/2025Unknown OwnerNot disclosed
—MChMineralsNot disclosed

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.