[5] Delafossite, along with other minerals of the ABO2 group, is known for its wide range of electrical properties, its conductivity varying from insulating to metallic.

[6] The ratio he determined was very close to Cu:Fe:O=1:1:2, with slightly more iron than copper.

When Rogers heated powdered delafossite with silver sulfate solution, the spangle reaction occurred.

[6] Delafossite has hexagonal symmetry that can have the space groups R3m or P63/mmc depending on the stacking of A cation layers.

It demonstrated a photovoltaic effect when placed into thin film structures composed of ITO/ZnO/2H CuFeO2/graphite/carbon black.

[10] Other applications: CuFeO2 is made of earth abundant elements and has good stability in aqueous environments, and as such was investigated as photocathodes for photoelectrochemical reduction of CO2, solar water reduction, and as a cathode material in lithium batteries.

[10] In 1873, delafossite was discovered by Charles Friedel in a region of Ekaterinbug, Ural Mountains.

[11] Since its discovery it has been identified as a fairly common mineral found in such places as the copper mines of Bisbee, Arizona.

[6] The mineral was given the name delafossite in honor of the French mineralogist and crystallographer Gabriel Delafosse (1796–1878).