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.

Name Pronunciation:

Uranospinite + Pronunciation

Uranospinite Image

Images:

Click Here for Larger Uranospinite Image

Uranospinite Metauranospinite

Comments: Translucent platy uranospinite (probably dehydrated to metauranospinite) 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:b:c =0.6945:1:0.347

Cell Dimensions:

a = 14.35, b = 20.66, c = 7.17, Z = 4; V = 2,125.70 Den(Calc)= 3.24

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P nma

$Help on X Ray Diffraction:$ 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

Diaphaneity:

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, Short UV=bright lemon yellow, 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= -0.124 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1779,KPDmeas= 0.1671,KC= 0.1582
Ncalc = 1.51 - 1.55

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:

Bulk Density (Electron Density)=3.10 gm/cc
note: Specific Gravity of Uranospinite =3.45 gm/cc.

Fermion Index:

Fermion Index = 0.0035195187
Boson Index = 0.9964804813

Photoelectric:

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

Radioactivity:

GRapi = 3,509,218.19 (Gamma Ray American Petroleum Institute Units)
Concentration of Uranospinite per GRapi unit = 284.96 (PPB)

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) 866.76 ±216.69 grams of pure Uranospinite .

**Estimated Radioactivity from Uranospinite** - 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 / 8.21 cm	82,084,893	2.22E-03	3,509,218.19	1,153.72
100 gm / 3.81 cm	8,208,489	2.22E-04	350,921.82	115.37
10 gm / 1.77 cm	820,849	2.22E-05	35,092.18	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:

40.02a.02.01 (40)Hydrated Phosphates, etc

(40.02a)where A++ (B++)2 (XO4) · x(H2O), containing (UO2)++

(40.02a.02)Dana Group

40.02a.02.01 Uranospinite Ca(UO2)2(AsO4)2•10(H2O) P nma 2/m 2/m 2/m

40.02a.02.02 Metauranospinite Ca(UO2)2(AsO4)2•8(H2O) P 4/nmm 4/m 2/m 2/m

Strunz Class:

08.EB.05 08 - PHOSPHATES, ARSENATES, VANADATES

08.E - Uranyl Phosphates and Arsenates

08.EB -UO2:RO4 = 1:1

08.EB.05 Autunite Ca(UO2)2(PO4)2•10-12(H2O) I 4/mmm 4/m 2/m 2/m

08.EB.05 Heinrichite Ba(UO2)2(AsO4)2•10-12(H2O) P 2/c 2/m

08.EB.05 Kahlerite Fe(UO2)2(AsO4)2•10-12(H2O) P 4₁/n 4/m

08.EB.05 Uranocircite Ba(UO2)2(PO4)2•12(H2O) P 4/nnc 4/m 2/m 2/m

08.EB.05 Novacekite Mg(UO2)2(AsO4)2•12(H2O) P 4₁/n 4/m

08.EB.05 Saleeite Mg(UO2)2(PO4)2•10(H2O) I 4/mmm 4/m 2/m 2/m

08.EB.05 Xiangjiangite (Fe,Al)(UO2)4(PO4)2(SO4)2(OH)•22(H2O) C 2/c or Cc Mono

08.EB.05 Torbernite Cu(UO2)2(PO4)2•8-12(H2O) I 4/mmm 4/m 2/m 2/m

08.EB.05 Uranospinite Ca(UO2)2(AsO4)2•10(H2O) P nma 2/m 2/m 2/m

08.EB.05 Zeunerite Cu(UO2)2(AsO4)2•10-16(H2O) P 4/nnc 4/m 2/m 2/m

08.EB.05 Metarauchite! Ni(UO2)2(AsO4)2•8H2O P1 1

Other Uranospinite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8; Enc. Of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Uranospinite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Franklin Minerals(Dunn)
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

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

Uranospinite

Ca(UO2)2(AsO4)2•10(H2O)
Dana No: 40.02a.02.01 Strunz No: 08.EB.05
Locality:

Notes: