Images
Formula: Cu6(Cu4Fe2)As4S13
Sulphosalt, tennantite subgroup,
tetrahedrite group
Crystal System: Isometric
Specific gravity: 4.62 calculated
Hardness: 3 to 4½
Streak: Reddish grey, black, red-brown
Colour: Grey-black, steel-grey, iron-grey, black
Environments
Metamorphic environments
Hydrothermal environments
Tennantite-(Fe) was named during a reclassification of the
tetrahedrite group in 2020. It is the most common of the
tennantite series.
Localities
At the Hinterschießling Alp, Scheffau am Wilden Kaiser, Kufstein District, Tyrol, Austria, tennantite-(Fe) occurs with
dolomite
(Mindat photo).
Tennantite-(Fe) from the Hinterschießling Alp -
Image
At the Traversella Mine, Traversella, Metropolitan City of Turin, Piedmont, Italy, tennantite-(Fe) occurs with
dolomite, pyrite and quartz
(Mindat photo).
Tennantite-(Fe) from the Traversella Mine -
Image
The type locality is Cornwall, England, UK.
At Wheal Jewel, Gwennap, Cornwall, England, UK, tennantite, probably
tennantite-(Fe), occurs encrusting
chalcopyrite
(R&M 86.4.330).
Tennantite from Wheal Jewel -
Image
Back to Minerals