542 - Ferberite

ID	542
Mineral	Ferberite
Location	Minas Panasqueira - Portalegre - Portugal
Fluorescence	LW-UV: close SW-UV: close
Mindat.org	View Ferberite information at mindat.org

ID	1476
Long ID	1:1:1476:8
Formula	`Fe²⁺(WO₄)`
IMA Status	0 1
Other Occurrences	High temperature hydrothermal veins, greisens, granitic pegmatites.
Industrial	Ore of tungsten.
Discovery Year	1863
Diapheny	Opaque
Cleavage	Perfect on {010}
Tenacity	brittle
Colour	Black; dark brown in transmitted light
Hardness (min)	4.0
Hardness (max)	4.5
About the name	For Dr. Moritz Rudolph Ferber (1805-1875), amateur mineralogist, Gera, Germany.
Streak	Brownish black to black
Crystal System	Monoclinic
Cleavage Type	Perfect
Fracture type	Sub-Conchoidal
Morphology	Crystals wedge-shaped, commonly flattened {100} and elongated [010] or, less commonly, along [001]. Crystal faces striated parallel {001} or {010}; as groups of bladed crystals; less often short prismatic [001] and flattened {100}. Massive.
Twinning	Common with twin plane {100}, rarely {001}; simple contact twins with composition face (100) or, rarely (001); interpenetrant (simulating Carlsbad twins in orthoclase) or lamellar (very rare). Twin plane {023}, common, usually as simple contact twins, rarely as repeated twins or interpenetrating.
UV	Not fluorescent.
key_elements	0
shortcode_ima	Feb
Group	Wolframite Group

Ferberite