Sabugalite Mineral Data
General Sabugalite Information
Chemical Formula:
HAl(UO2)4(PO4)4•16(H2O)
Composition:
Molecular Weight = 1,776.23 gm
Uranium 53.60 % U 60.81 % UO2
Aluminum 1.52 % Al 2.87 % Al2 O3
Phosphorus 6.98 % P 15.98 % P2 O5
Hydrogen 1.87 % H 16.73 % H2 O
Oxygen 36.03 % O
______ ______
100.00 % 96.40 % = TOTAL OXIDE
Empirical Formula:
HAl(UO2 )4 (PO4 )4 •16(H2 O)
Environment:
Secondary mineral formed in the oxidized zone of uranium veins.
IMA Status:
Valid Species (Pre-IMA) 1951
Locality:
Quarta Feira mine, Portugal Link to MinDat.org Location Data.
Name Origin:
Name for Sabugal Co., Portugal, in which the mineral was first found.
Name Pronunciation:
Sabugalite + Pronunciation
Sabugalite Image
Images:
Images:
Sabugalite
Comments: Squarish, platy, pale yellowish green sabugalite crystals.
Location: Sabugal County, Beira Alta Province, Portugal.
Scale: Picture size 3 mm.
© Paul M. Schumacher
Sabugalite Crystallography
Axial Ratios:
a:c = 1:2.77298
Cell Dimensions:
a = 6.96, c = 19.3, Z = 1; V = 934.92 Den(Calc)= 3.15
Crystal System:
Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: I 4/mmm
X Ray Diffraction:
By Intensity(I/Io ): 9.69(1), 4.86(0.9), 3.47(0.8),
Physical Properties of Sabugalite
Cleavage:
{001} Perfect
Color:
Light yellow, Lemon.
Density:
3.2
Diaphaneity:
Transparent to Translucent
Hardness:
2.5 - Finger Nail
Luminescence:
Fluorescent, Short UV=lemon-yellow, Long UV=lemon-yellow.
Luster:
Vitreous (Glassy)
Streak:
yellow white
Optical Properties of Sabugalite
Gladstone-Dale:
CI meas = -0.177 (Poor) - where the CI = (1-KPDmeas /KC ) CI calc = -0.195 (Poor) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.1828,KPDmeas = 0.1799,KC = 0.1529 Ncalc = 1.48 - 1.49
Optical Data:
Biaxial (-), a=1.564, b=1.581, g=1.582, bire=0.0180
Pleochroism (x):
colorless.
Pleochroism (y):
colorless.
Pleochroism (z):
colorless.
Calculated Properties of Sabugalite
Electron Density:
Bulk Density (Electron Density)=2.86 gm/cc note: Specific Gravity of Sabugalite =3.20 gm/cc.
Fermion Index:
Fermion Index = 0.0040351808 Boson Index = 0.9959648192
Photoelectric:
PESabugalite =1,360.75 barns/electronU=PESabugalite x r electron =3,892.95 barns/cc.
Radioactivity:
GRapi = 4,084,843.40 (Gamma Ray American Petroleum Institute Units)
Concentration of Sabugalite per GRapi unit = 244.81 (PPB)
Sabugalite 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)
7.45 ± 1.86 grams of pure Sabugalite .
Estimated Maximum U.S. Postal Shipping Size
(10 mRem/hr limit, Unshielded 100 cm box)
744.62 ±186.16 grams of pure Sabugalite .
Estimated Radioactivity from Sabugalite - 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 / 8.42 cm
95,949,664
2.59E-03
4,084,843.40
1,342.96
100 gm / 3.91 cm
9,594,966
2.59E-04
408,484.34
134.30
10 gm / 1.81 cm
959,497
2.59E-05
40,848.43
13.43
1 gm / 8.42 mm
95,950
2.59E-06
4,084.84
1.34
0.1 gm / 3.91 mm
9,595
2.59E-07
408.48
0.13
0.01 gm / 1.81 mm
959
2.59E-08
40.85
0.01
0.001 gm / 0.84 mm
96
2.59E-09
4.08
0.00
Weight of pure Sabugalite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.20 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
Sabugalite Classification
Dana Class:
40.02a.24.01 (40) Hydrated Phosphates, etc
(40.02a) where A++ (B++)2 (XO4) � x(H2O), containing (UO2)++
(40.02a.24) Dana Group
40.02a.24.01 Sabugalite HAl(UO2)4(PO4)4•16(H2O) I 4/mmm 4/m 2/m 2/m
Strunz Class:
08.EB.55 08 - PHOSPHATES, ARSENATES, VANADATES
08.E - Uranyl Phosphates and Arsenates
08.EB -UO2:RO4 = 1:1
08.EB.55 Sabugalite HAl(UO2)4(PO4)4•16(H2O) I 4/mmm 4/m 2/m 2/m
Other Sabugalite Information
References:
NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
See Also:
Links to other databases for Sabugalite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - Uranium Minerals
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Sabugalite
HAl(UO2)4(PO4)4•16(H2O)
Dana No: 40.02a.24.01 Strunz No: 08.EB.55
Locality:
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