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Rutherfordine

Mineral

Summary

Mineral

Field	Value
name	Rutherfordine
category	Carbonate mineral
image	Schoepite-Rutherfordine-214963.jpg
imagesize	260px
alt	A conglommeration of glassy, yellowish crystals
formula	UO2CO3
IMAsymbol	Rfd
strunz	5.EB.05
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
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.
cleavage	perfect on {010}, good on {001}
lustre	Silky, dull
streak	Yellow
diaphaneity	Transparent
gravity	5.7
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°
other	[[Image:Radioactive.svg	25px]] Radioactive
references

H–M Symbol: (mm2) c = 4.298 Å; Z = 2 | length fast/slow = 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.

It occurs as a secondary mineral as a weathering product of uraninite. In addition to uraninite it occurs associated with the rare minerals becquerelite, masuyite, schoepite, kasolite, curite, boltwoodite, vandendriesscheite, billietite, metatorbernite, fourmarierite, studtite and sklodowskite. It forms under acidic to neutral pH and is the only known mineral that contains only uranyl and carbonate.

References

Palache, C., H. Berman, and C. Frondel (1951) Dana's system of mineralogy, 7th ed., v. II, pp. 274–275.

References

Warr, L.N.. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine.
[http://rruff.geo.arizona.edu/doclib/hom/rutherfordine.pdf Handbook of Mineralogy]
[http://www.mindat.org/min-3484.html Mindat with location data]
[http://www.webmineral.com/data/Rutherfordine.shtml Webmineral data]

Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

carbonate-minerals uranium(vi)-minerals orthorhombic-minerals minerals-in-space-group-44 radioactive-minerals

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