Meta-ankoleite Mineral Data

Meta-ankoleite Mineral Data

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General Meta-ankoleite Information

Chemical Formula:

K2(UO2)2(PO4)2·6(H2O)

Composition:

Molecular Weight = 916.29 gm

Potassium 8.53 % K 10.28 % K₂O

Uranium 51.96 % U 58.94 % UO₂

Phosphorus 6.76 % P 15.49 % P₂O₅

Hydrogen 1.32 % H 11.80 % H₂O

Oxygen 31.43 % O

______ ______

100.00 % 96.51 % = TOTAL OXIDE

Empirical Formula:

K₂(UO₂)₂(PO₄)₂·6(H₂O)

IMA Status:

Approved IMA 1966

Locality:

Mungenyi pegmatite, Ankole District, Uganda. Link to MinDat.org Location Data.

Name Origin:

Named after the locality.

Synonym:

Ankoleite

Potassium autunite

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Meta-ankoleite Crystallography

Axial Ratios:

a:c = 1:1.27141

Cell Dimensions:

a = 6.993, c = 8.891, Z = 1; V = 434.79 Den(Calc)= 3.50

Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: P 4/nmm

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

By Intensity(I/I_o): 8.92(1), 3.73(0.65), 3.25(0.55),

Physical Properties of Meta-ankoleite

Color:

Yellow.

Density:

3.54

Diaphaniety:

Transparent to Translucent

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Lamellar - Thin laminae producing a lamellar structure.

Hardness:

2-2.5 - Gypsum-Finger Nail

Luster:

Vitreous (Glassy)

Streak:

pale yellow

Optical Properties of Meta-ankoleite

Gladstone-Dale:

CI meas= -0.091 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.104 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1629,KPDmeas= 0.161,KC= 0.1475

Optical Data:

Uniaxial (-), e=1.56, w=1.58, bire=0.0200.

Calculated Properties of Meta-ankoleite

Electron Density:

r_electron=3.15 gm/cc
note: r_{Meta-ankoleite}=3.54 gm/cc.

Fermion Index

Fermion Index = 0.0039
Boson Index = 0.9961

Photoelectric:

PE_{Meta-ankoleite}=1,324.94 barns/electron
U=PE_{Meta-ankoleite} x r_electron=4,176.93 barns/cc.

Radioactivity:

GRapi = 3,943,965.08 (Gamma Ray American Petroleum Institute Units)

Meta-ankoleite 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) 7.71 ± 1.93 grams of pure Meta-ankoleite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 771.22 ±192.81 grams of pure Meta-ankoleite .

**Estimated Radioactivity from Meta-ankoleite** - very strong
Specimen Size Weight/Volume (Sphere) *	Calculated Activity Bequerols (Bq)	Calculated Activity Curies (Ci)	Estimated Activity GR(api)	Estimated Exposure (mRem**)/hr If Held in Hand For One Hour
1000 gm / 8.14 cm	93,002,269	2.51E-03	3,943,965.08	1,296.65
100 gm / 3.78 cm	9,300,227	2.51E-04	394,396.51	129.66
10 gm / 1.75 cm	930,023	2.51E-05	39,439.65	12.97
1 gm / 8.14 mm	93,002	2.51E-06	3,943.97	1.30
0.1 gm / 3.78 mm	9,300	2.51E-07	394.40	0.13
0.01 gm / 1.75 mm	930	2.51E-08	39.44	0.01
0.001 gm / 0.81 mm	93	2.51E-09	3.94	0.00

Weight of pure Meta-ankoleite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.54 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

Meta-ankoleite Classification

Dana Class:

40.2a.8.1 (40)Hydrated Phosphates, etc

(40.2a)where A++ (B++)2 (XO4) · x(H2O), containing (UO2)++

(40.2a.8)Dana Group

40.2a.8.1 Meta-ankoleite K2(UO2)2(PO4)2·6(H2O) P 4/nmm 4/m 2/m 2/m

Strunz Class:

VII/E.02-140 VII - Phosphates, Arsenates and Vanadates

VII/E - Uranylphosphates and uranylvanadates with [UO2]2+ - [PO4 | AsO4]3- and [UO2]2+ - [V2O8]6-

VII/E.02 - Meta-autunite group

VII/E.02-10 Metanovacekite Mg(UO2)2(AsO4)2·4-8(H2O) P 4/n 4/m

VII/E.02-20 Bassetite Fe(UO2)2(PO4)2·8(H2O) P 2₁/m 2/m

VII/E.02-30 Metakahlerite Fe(UO2)2(AsO4)2·8(H2O) P 4/mmm 4/m 2/m 2/m

VII/E.02-40 Lehnerite Mn[UO2/PO4]2·8(H2O) P 2₁/n 2/m

VII/E.02-50 Metakirchheimerite Co(UO2)2(AsO4)2·8(H2O) P 4/mmm 4/m 2/m 2/m

VII/E.02-60 Metatorbernite Cu(UO2)2(PO4)2·8(H2O) P 4/n 4/m

VII/E.02-70 Metazeunerite Cu(UO2)2(AsO4)2·8(H2O) P 4/n 4/m

VII/E.02-80 Metalodevite Zn(UO2)2(AsO4)2·10(H2O) P 4₁/m 4/m

VII/E.02-90 Meta-autunite Ca(UO2)2(PO4)2·2-6(H2O) P 4/nmm 4/m 2/m 2/m

VII/E.02-95 Sodium meta-autunite! Na2(UO2)2(PO4)2·6-8(H2O) P 4/nmm 4/m 2/m 2/m

VII/E.02-100 Meta-uranospinite Ca(UO2)2(AsO4)2·8(H2O) P 4/nmm 4/m 2/m 2/m

VII/E.02-110 Meta-uranocircite Ba(UO2)2(PO4)2·6-8(H2O) P 2₁ 2

VII/E.02-120 Metaheinrichite Ba(UO2)2(AsO4)2·8(H2O) P 4₁/? 4/m

VII/E.02-130 Sodium-uranospinite (Na2,Ca)(UO2)2(AsO4)2·5(H2O) P 4/nmm 4/m 2/m 2/m

VII/E.02-140 Meta-ankoleite K2(UO2)2(PO4)2·6(H2O) P 4/nmm 4/m 2/m 2/m

VII/E.02-150 Abernathyite K(UO2)(AsO4)·4(H2O) P 4/ncc 4/m 2/m 2/m

VII/E.02-160 Uramphite (NH4)(UO2)(PO4)·3(H2O) P 4/nmm 4/m 2/m 2/m

VII/E.02-170 Chernikovite (H3O)2(UO2)2(PO4)2·6(H2O) P 4/nmm 4/m 2/m 2/m

VII/E.02-180 Pseudo-autunite* (H3O)4Ca2(UO2)2(PO4)4·5(H2O)(?) Unk Ortho

VII/E.02-190 Ulrichite CaCu(UO2)(PO4)2·4(H2O) C 2/m 2/m

Other Meta-ankoleite Information

References:

NAME( AmMin) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

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Meta-ankoleite

K2(UO2)2(PO4)2·6(H2O)
Dana No: 40.2a.8.1 Strunz No: VII/E.02-140
Locality:

Notes: