Abernathyite	IMA-GP
Uranium	40.2a.9.1 (Dana Classification Number)
(Images)	7/E.02-150 (Strunz ID)

Property	Data	Remarks
Named for:	Jess Abernathy, of Moab, Utah, mine owner who found the first specimens.
Alternate     Name(s):
Mineral Class:	Phosphates, Arsenates and Vanadates   Uranylphosphates and Uranylvanadates with [UO2]2+ - [PO4 | AsO4]3- and [UO2]2+ - [V2O8]6-     Meta-Autunite group
Chemical     Formula:	K(UO2)(AsO4) · 4H2O	†
Chemical     Composition:	Arsenic: (As) 14.41% Hydrogen: (H) 1.55% Oxygen: (O) 30.76% Potassium: (K) 7.52% Uranium: (U) 45.77%	by weight
Molecular     Weight:	520.11	daltons (amu)
Specific     Radioactivity:	(All radiation is for a 1 gram, fully aged specimen) Specific Activity Dose Rate Becquerels Curies  milliRems  hour  microSieverts  hour 81.922 × 103 2.21 × 10-06 1.14 114.42 Estimated Average Annual Exposure: 360 mRem (3.6 milliSieverts)
Crystalography:	System: Tetragonal - Ditetragonal Dipyramidal Axial Ratios: a: 1.26638 c: 1 Cell Dimensions: a: 7.17 Å c: 9.08 Å Z: 2 V: 466.79 Å3 DenCalc: 3.70 H-M Symbol: 4/m 2/m 2/m Space Group: P4/ncc X-Ray Diffraction:   By Intensity ( I/Io ) (1): 9.14 Å (0.8): 3.34 Å (0.8): 3.84 Å
Habit:	Tabular
Cleavage:	[001] Perfect [010]   [100]
Fracture:	Brittle
Moh's     Hardness:	2 - 3
Density:	3.31 - 3.57	grams/cm3
Color:	Yellow
Streak:	Yellow
Luster:	Vitreous
Diaphaniety:	Transparent
Dichroism:	(e): Pale yellow (w:) Yellow
Ultra Violet     Fluorescence:	Long Wave: Yellow green Short Wave: Yellow green
Magnetism:	Non-magnetic
Occurance:	Rare secondary mineral coating fractures in bleached asphaltic sandstone hosting a Colorado Plateau-type uranium deposit.
Associated     Minerals:	Aluminite, Annabergite, Aragonite, Autunite, Azurite, Barite, Basaluminite, Bergslagite, Bixbyite, Bournonite, Brandtite, Braunite, Calcite, Cerussite, Chalcopyrite, Chernovite-(Y), Coffinite, Cryptomelane, Dolomite, Erythrite, Galena, Gypsum, Hausmannite, Heinrichite, Humboldtine, Kutnohorite, , Malachite, Marcasite, 'Meta-Aluminite', Meta-Autunite, 'Meta-Uranospinite', Metaheinrichite, Metakirchheimerite, Metalodevite, Metatorbernite, Metazeunerite, Novácekite, Powellite, Pyrite, Quartz, Rhodochrosite, Rutherfordine, Schoepite, Scorodite, Sklodowskite, Sphalerite, Tilasite, Todorokite, Torbernite, Trögerite, Umohoite, Uraninite, Uranopilite, Wulfenite, Xenotime-(Y), Zeunerite, Zippeite Mineral   -   > 50% of sites Mineral   -   > 25% of sites Mineral   -   > 15% of sites Minerals   -   Uranium & Thorium mineral links	These are minerals known to be found with Abernathyite
Localities:	Rare Abernathyite Localities
Notes:	Strongly radioactive a- and b-particles, g-rays. Crystals are probably metamic.

 

Abernathyite Images Specimen #1
(001a)	(001a-a)	(001a-b)	(001a-c)
(001b)	(001b-a)	(001b-b)	(001b-c)
(001b-d)	(001b-e)	(001c-a)	(001d-a)
Riviéral, Lodève, Hérault, Languedoc-Roussillon, France
Specimen Notes Imaging Notes - Image 001a-b is a combined image of two images, both at slightly different focal settings. Image 001c-a is a combined image of ten images, all at slightly different focal settings. The effective depth of focus of the image approaches 1 mm. Occurrence - The host rock shows a definite grain that allows easy fracturing into layers, and less easily across the layer. This is most obvious in the macroscopic view of the specimen. The images designated as 001a-x and 001b-x are of the major faces of the specimen, and those desinated 001c-x and 001d-x are of its minor faces.   Specimen Physical Properties Weight: 11.63 grams     g-Radiation Level:   cmp   msieverts background: 20 cpm

Special Notes
†	Dana's New Mineralogy gives a formula of: K(UO2)(AsO4)2 · 3H2O This is incorrect, as it is not balanced between the anions (-6 total) and cations (+3 total).