Uranospinite Mineral Data

Uranospinite Mineral Data +

General Uranospinite Information

Chemical Formula:

Ca(UO2)2(AsO4)2·10(H2O)

Composition:

Molecular Weight = 1,038.12 gm

Calcium 3.86 % Ca 5.40 % CaO

Uranium 45.86 % U 52.02 % UO₂

Arsenic 14.43 % As 22.14 % As₂O₅

Hydrogen 1.94 % H 17.35 % H₂O

Oxygen 33.91 % O

______ ______

100.00 % 96.92 % = TOTAL OXIDE

Empirical Formula:

Ca(UO₂)₂(AsO₄)₂·10(H₂O)

Environment:

Alteration product of uraninite.

IMA Status:

Valid Species (Pre-IMA) 1873

Locality:

Weisser Hirsch mine, Neustadtl, Schneeberg, Saxony, Germany. Link to MinDat.org Location Data.

Name Origin:

Named for uranium and the Greek for "siskin," in allusion to its composition and color.

Uranospinite Image

Images:

Uranospinite

Comments: Translucent platy uranospinite microcrystals on matrix.
Location: Grube Buhlskopf, near Ellweiler, Rheinland-Pfalz, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Uranospinite Crystallography

Axial Ratios:

a:c = 1:2.87447

Cell Dimensions:

a = 7.17, c = 20.61, Z = 2; V = 1,059.54 Den(Calc)= 3.25

Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: I 4/mmm

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

By Intensity(I/I_o): 10.16(1), 3.56(0.9), 3.39(0.8),

Physical Properties of Uranospinite

Cleavage:

[001] Perfect, [100] Distinct

Color:

Siskin green, Lemon yellow, Yellow green.

Density:

3.45

Diaphaniety:

Transparent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Platy - Sheet forms (e.g. micas).

Hardness:

2-3 - Gypsum-Calcite

Luminescence:

Fluorescent, Long UV=yellowish green.

Luster:

Pearly

Streak:

light yellow

Optical Properties of Uranospinite

Gladstone-Dale:

CI meas= -0.056 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.121 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1773,KPDmeas= 0.1671,KC= 0.1582

Optical Data:

Biaxial (-), a=1.56, b=1.582, g=1.587, bire=0.0270, 2V(Calc)=50, 2V(Meas)=0-5. Dispersion r > v moderate.

Pleochroism (x):

colorless.

Pleochroism (y):

pale yellow.

Pleochroism (z):

pale yellow.

Calculated Properties of Uranospinite

Electron Density:

r_electron=3.10 gm/cc
note: r_Uranospinite=3.45 gm/cc.

Fermion Index

Fermion Index = 0.00351
Boson Index = 0.99649

Photoelectric:

PE_Uranospinite=1,169.85 barns/electron
U=PE_Uranospinite x r_electron=3,623.41 barns/cc.

Radioactivity:

GRapi = 3,509,216.60 (Gamma Ray American Petroleum Institute Units)

Uranospinite 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) 8.67 ± 2.17 grams of pure Uranospinite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 866.77 ±216.69 grams of pure Uranospinite .

**Estimated Radioactivity from Uranospinite** - 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 / 8.21 cm	82,084,889	2.22E-03	3,509,216.60	1,153.72
100 gm / 3.81 cm	8,208,489	2.22E-04	350,921.66	115.37
10 gm / 1.77 cm	820,849	2.22E-05	35,092.17	11.54
1 gm / 8.21 mm	82,085	2.22E-06	3,509.22	1.15
0.1 gm / 3.81 mm	8,208	2.22E-07	350.92	0.12
0.01 gm / 1.77 mm	821	2.22E-08	35.09	0.01
0.001 gm / 0.82 mm	82	2.22E-09	3.51	0.00

Weight of pure Uranospinite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.45 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

Uranospinite Classification

Dana Class:

40.2a.2.1 (40)Hydrated Phosphates, etc

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

(40.2a.2)Dana Group

40.2a.2.1 Uranospinite Ca(UO2)2(AsO4)2·10(H2O) I 4/mmm 4/m 2/m 2/m

40.2a.2.2 Meta-uranospinite Ca(UO2)2(AsO4)2·8(H2O) P 4/nmm 4/m 2/m 2/m

Strunz Class:

VII/E.01-100 VII - Phosphates, Arsenates and Vanadates

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

VII/E.01 - Autunite group

VII/E.01-10 Trogerite H2(UO2)2(AsO4)2·8(H2O) P 4/mmm 4/m 2/m 2/m

VII/E.01-20 Sabugalite HAl(UO2)4(PO4)4·16(H2O) I 4/mmm 4/m 2/m 2/m

VII/E.01-30 Saleeite Mg(UO2)2(PO4)2·10(H2O) I 4/mmm 4/m 2/m 2/m

VII/E.01-35 Seelite-1 Mg[(UO2)(AsO3)x(AsO4)1-x]2·7(H2O) C 2/m 2/m

VII/E.01-35* Seelite-2 Mg(UO2)(AsO3)x(AsO4)1-x·7(H2O)(x=0.7) C 2/m 2/m

VII/E.01-40 Novacekite Mg(UO2)2(AsO4)2·12(H2O) P 4₁/n 4/m

VII/E.01-50 Kahlerite Fe(UO2)2(AsO4)2·10-12(H2O) P 4₁/n 4/m

VII/E.01-60 Fritzscheite Mn(UO2)2[(V,P)O4]2·4(H2O) Pnam 2/m 2/m 2/m

VII/E.01-70 Torbernite Cu(UO2)2(PO4)2·8-12(H2O) I 4/mmm 4/m 2/m 2/m

VII/E.01-80 Zeunerite Cu(UO2)2(AsO4)2·10-16(H2O) P 4/nnc 4/m 2/m 2/m

VII/E.01-90 Autunite Ca(UO2)2(PO4)2·10-12(H2O) I 4/mmm 4/m 2/m 2/m

VII/E.01-100 Uranospinite Ca(UO2)2(AsO4)2·10(H2O) I 4/mmm 4/m 2/m 2/m

VII/E.01-110 Uranocircite Ba(UO2)2(PO4)2·12(H2O) P 4/nnc 4/m 2/m 2/m

VII/E.01-120 Heinrichite Ba(UO2)2(AsO4)2·10-12(H2O) IA/mmm 4/m 2/m 2/m

VII/E.01-130 Sodium-autunite Na2(UO2)2(PO4)2·8(H2O) P 4/nmm 4/m 2/m 2/m

Other Uranospinite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)

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Uranospinite

Ca(UO2)2(AsO4)2·10(H2O)
Dana No: 40.2a.2.1 Strunz No: VII/E.01-100
Locality:

Notes: