Phosphuranylite Mineral Data

General Phosphuranylite Information

Chemical Formula:

KCa(H3O)3(UO2)7(PO4)4O4•8(H2O)

Composition:

Molecular Weight = 2,614.45 gm

Potassium 1.50 % K 1.80 % K₂O

Calcium 1.53 % Ca 2.14 % CaO

Uranium 63.73 % U 72.30 % UO₂

Phosphorus 4.74 % P 10.86 % P₂O₅

Hydrogen 0.96 % H 8.61 % H₂O

Oxygen 27.54 % O

______ ______

100.00 % 95.72 % = TOTAL OXIDE

Empirical Formula:

KCa(H₃O)₃(UO₂)₇(PO₄)₄O₄•8(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1879

Locality:

Flat Rock pegmatite, Mitchell County, North Carolina, USA. Link to MinDat.org Location Data.

Name Origin:

Named for the composititon, PHOSPHorus, and URANYL, U4+.

Name Pronunciation:

Phosphuranylite + Pronunciation

Synonym:

ICSD 69950

PDF 19-898

Phosphuranylite Image

Images:

Phosphuranylite

Comments: Bright yellow orange crystals of phosphuranylite on matrix.
Location: Wagontown, Chester County, Pennsylvania, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Images:

Phosphuranylite Uranocircite

Comments: Yellow, waxy phosphuranylite with green uranocircite in matrix.
Location: Bergen, Falkenstein, Vogtland, Saxony, Germany. Scale: Picture size 0.5 cm.
© Paul M. Schumacher

Phosphuranylite Crystallography

Axial Ratios:

a:b:c =1.1538:1:1.2593

Cell Dimensions:

a = 15.835, b = 13.724, c = 17.284, Z = 4; V = 3,756.15 Den(Calc)= 4.62

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: C mcm

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 7.91(1), 3.15(0.6), 3.96(0.6),

Crystal Structure:

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drag2 - RMB Resize/Rotate
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Piret P , Piret-Meunier J , European Journal of Mineralogy , 3 (1991) p.69-77, Composition chimique et structure cristalline, de la phosphuranylite Ca(UO2)[(UO2)3(OH)2(PO4)2]2.12H2O

Physical Properties of Phosphuranylite

Cleavage:

{100} Perfect, {010} Indistinct

Color:

Golden yellow, Dark yellow, Lemon.

Density:

4.1

Diaphaneity:

Translucent

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

2.5 - Finger Nail

Luminescence:

Fluorescent, Short UV=orange-brown, Long UV=Orange-Brown.

Luster:

Vitreous - Pearly

Streak:

light yellow

Optical Properties of Phosphuranylite

Gladstone-Dale:

CI meas= -0.335 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.185 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1534,KPDmeas= 0.1729,KC= 0.1295
Ncalc = 1.53 - 1.6

Optical Data:

Biaxial (-), a=1.69, b=1.718, g=1.718-1.719, bire=0.0280-0.0290, 2V(Calc)=0-20, 2V(Meas)=5-20. Dispersion r > v strong.

Pleochroism (x):

colorless or pale yellow.

Pleochroism (y):

golden yellow or golden yellow.

Pleochroism (z):

golden yellow or golden yellow.

Calculated Properties of Phosphuranylite

Electron Density:

Bulk Density (Electron Density)=3.99 gm/cc
note: Specific Gravity of Phosphuranylite =4.62 gm/cc.

Fermion Index:

Fermion Index = 0.0047447239
Boson Index = 0.9952552761

Photoelectric:

PE_{Phosphuranylite}=1,676.29 barns/electron
U=PE_{Phosphuranylite} x r_electron=6,682.66 barns/cc.

Radioactivity:

GRapi = 4,687,520.90 (Gamma Ray American Petroleum Institute Units)
Concentration of Phosphuranylite per GRapi unit = 213.33 (PPB)

Phosphuranylite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 10 cm box) 6.49 ± 1.62 grams of pure Phosphuranylite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 648.89 ±162.22 grams of pure Phosphuranylite .

**Estimated Radioactivity from Phosphuranylite** - very strong
Specimen Size Weight/Volume (Sphere) *	Calculated Activity Becquerels (Bq)	Calculated Activity Curies (Ci)	Estimated Activity GR(api)	Estimated Exposure (mRem**)/hr If Held in Hand For One Hour
1000 gm / 7.45 cm	114,078,276	3.08E-03	4,687,520.90	1,541.10
100 gm / 3.46 cm	11,407,828	3.08E-04	468,752.09	154.11
10 gm / 1.60 cm	1,140,783	3.08E-05	46,875.21	15.41
1 gm / 7.45 mm	114,078	3.08E-06	4,687.52	1.54
0.1 gm / 3.46 mm	11,408	3.08E-07	468.75	0.15
0.01 gm / 1.60 mm	1,141	3.08E-08	46.88	0.02
0.001 gm / 0.74 mm	114	3.08E-09	4.69	0.00

Weight of pure Phosphuranylite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.62 gm/cc.*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem

Phosphuranylite Classification

Dana Class:

42.04.08.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen

(42.04)where (AB)5 (XO4)2 Zq · x(H2O)

(42.04.08)Dana Group

42.04.08.01 Phosphuranylite KCa(H3O)3(UO2)7(PO4)4O4•8(H2O) C mcm 2/m 2/m 2/m

Strunz Class:

08.EC.10 08 - PHOSPHATES, ARSENATES, VANADATES

08.E - Uranyl Phosphates and Arsenates

08.EC -UO2:RO4 = 3:2

08.EC.10 Arsenuranylite Ca(UO2)4(AsO4)2(OH)4•6(H2O) Bmmb 2/m 2/m 2/m

08.EC.10 Dewindtite Pb3[H(UO2)3O2(PO4)2]2•12(H2O) Bmmb 2/m 2/m 2/m

08.EC.10 Kivuite? (Th,Ca,Pb)H2(UO2)4(PO4)2(OH)8•7(H2O) Unk Ortho

08.EC.10 Renardite Pb(UO2)4(PO4)2(OH)4•7(H2O) Bmmb 2/m 2/m 2/m

08.EC.10 Phosphuranylite KCa(H3O)3(UO2)7(PO4)4O4•8(H2O) C mcm 2/m 2/m 2/m

08.EC.10 Yingjiangite (K2,Ca)(UO2)7(PO4)4(OH)6•6(H2O) Bmmb 2/m 2/m 2/m

Other Phosphuranylite Information

References:

NAME( Dana8) PHYS. PROP.(Collectors Book of Fluorescent Minerals) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Phosphuranylite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - Uranium Minerals
17 - WWW-MINCRYST

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Ask about Phosphuranylite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
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Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Phosphuranylite Specimen Label here :

Phosphuranylite

KCa(H3O)3(UO2)7(PO4)4O4•8(H2O)
Dana No: 42.04.08.01 Strunz No: 08.EC.10
Locality:

Notes: