rutherfordine

{{Infobox mineral | name = Rutherfordine | category = Carbonate mineral | boxwidth = | boxbgcolor = | image = Schoepite-Rutherfordine-214963.jpg | imagesize = 260px | alt = A conglommeration of glassy, yellowish crystals | caption = | formula = UO2CO3 | IMAsymbol = Rfd | molweight = | strunz = 5.EB.05 | dana = | system = Orthorhombic | class = Pyramidal (mm2) H–M Symbol: (mm2) | symmetry = Imm2 | unit cell = a = 4.840 Å, b = 9.273 Å c = 4.298 Å; Z = 2 | color = | colour = Brownish, brownish yellow, white, light brown orange, or light yellow | habit = Crystals are Lathlike, elongated crystals commonly radiating, fibrous, matted; earthy to very fine-grained masses. | twinning = | cleavage = perfect on {010}, good on {001} | fracture = | tenacity = | mohs = | lustre = Silky, dull | streak = Yellow | diaphaneity = Transparent | gravity = 5.7 | density = | polish = | opticalprop = Biaxial (+) | refractive = nα = 1.700 - 1.723 nβ = 1.716 - 1.730 nγ = 1.755 - 1.795 | birefringence = δ = 0.055 - 0.072 | pleochroism = Visible X= colorless, Y= pale yellow, Z= pale greenish yellow | 2V = Calculated: 53° | dispersion = | extinction = | length fast/slow = | fluorescence= | absorption = | melt = | fusibility = | diagnostic = | solubility = | other = 25px Radioactive | alteration = | references = }} Rutherfordine is a mineral containing almost pure uranyl carbonate (UO2CO3). It crystallizes in the orthorhombic system in translucent lathlike, elongated, commonly radiating in fibrous, and in pulverulent, earthy to very fine-grained dense masses. It has a specific gravity of 5.7 and exhibits two directions of cleavage. It appears as brownish, brownish yellow, white, light brown orange, or light yellow fluorescent encrustations. It is also known as diderichite.

It was first described in 1906 for an occurrence in the Morogoro Region of Tanzania. It was named for Ernest Rutherford. It has been reported in the Democratic Republic of Congo, the Northern Territory of Australia and a variety of locations worldwide.