bukovite

{{Infobox mineral | name = Bukovite | image = Bukovite-605903.jpg | imagesize = 260px | alt = | caption = Bukovite: metallic grayish-brown grains are noted by the two red dots | category = Selenide – Bukovite group | formula = Tl2(CuFe)4Se4 | IMAsymbol=Bko | molweight = | strunz = 2.BD.30 | dana = 2.5.5.2 | system = Tetragonal | class = Ditetragonal dipyramidal (4/mmm) H-M symbol: (4/m 2/m 2/m) | symmetry = I4/mmm | unit cell = V = 216.58 Å3 | color = Grayish-brown | colour = | habit = | twinning = | cleavage = Distinct/good: Good on {001} imperfect on {100} | fracture = | tenacity = | mohs = 2 | luster = Metallic | streak = | diaphaneity = Opaque | gravity = 7.40 (calculated) | density = | polish = | opticalprop = | refractive = | birefringence = | pleochroism = | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = | prop1 = | prop1text = | references = | var1 = | var1text = | var2 = | var2text = | var3 = | var3text = | var4 = | var4text = | var5 = | var5text = | var6 = | var6text = }}

Bukovite is a rare selenide mineral with formula Tl2Cu3FeSe4. It is a brown to black metallic mineral which crystallizes in the tetragonal system.