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Ciprianiite Mineral Data

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General Ciprianiite Information

Help on Chemical  Formula: Chemical Formula: Ca4[(Th,U)(REE)]2(Al,[ ])2[Si4B4O22](OH,F)2
Help on Composition: Composition: Molecular Weight = 1,032.51 gm
   Lithium           0.03 %  Li    0.06 % Li2O
   Calcium          17.86 %  Ca   24.98 % CaO
   La,Ce,Pr,Nd,Sm,  10.18 %  RE   11.88 % REE2O3
   Thorium          14.16 %  Th   16.11 % ThO2
   Magnesium         0.12 %  Mg    0.20 % MgO
   Uranium           0.69 %  U     0.78 % UO2
   Titanium          0.46 %  Ti    0.77 % TiO2
   Beryllium         0.72 %  Be    1.99 % BeO
   Aluminum          1.25 %  Al    2.37 % Al2O3
   Iron              2.06 %  Fe    2.94 % Fe2O3
   Silicon          10.91 %  Si   23.34 % SiO2
   Boron             4.19 %  B    13.49 % B2O3
   Hydrogen          0.05 %  H     0.47 % H2O
   Oxygen           36.43 %  O
   Fluorine          0.90 %  F     0.90 % F
                      -   %   F    -0.38 % -O=F2    
                   ______        ______ 
                   100.00 %       99.89 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca4REE0.73Th0.63Ca0.6U0.03Al0.48Fe3+0.38Ti0.1Mg0.05Be0.82Li0.04B4Si4.01O22O0.97 (OH)0.54F0.49
Help on Environment: Environment: Alkali-syenitic ejecta enclosed in pyroclastic formations of the Roma Comagmatic Province. (hellandite group; structure)
Help on IMA Status: IMA Status: Approved IMA 2001 (Dana # Added)
Help on Locality: Locality: Vico volcanic complex, Latium, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Curzio Cipriani, Professor of Mineralogy and Head of the Museum of Natural History, Universita di Firenze, Italy.
Help on Synonym: Synonym: IMA2001-021
 

Ciprianiite Image

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  Ciprianiite

Comments: Black crystal of ciprianiite in quartz.
Location: Monte Cavalluccio, Capagnano, Roma, Lazio, Italy. Scale: Picture size 2 mm.
© Paul M. Schumacher

Ciprianiite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =4.0302:1:2.1761
Help on Cell Dimensions: Cell Dimensions: a = 19.059, b = 4.729, c = 10.291, Z = 2; beta = 111.33° V = 863.99 Den(Calc)= 3.97
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.846(1)(411), 3.089(0.86)(412), 2.634(0.84)(611),2.653(0.8)(413), 2.648(0.79)(013), 3.454(0.79)(212), 4.729(0.72)(010),
 

Physical Properties of Ciprianiite

Help on Cleavage: Cleavage: {100} Fair
Help on Color: Color: Pale brown.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Anhedral Grains - Granular minerals without the expression of crystal shapes
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Ciprianiite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.116 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1748,KC= 0.1977
Ncalc = 1.78
Help on Optical Data: Optical Data: Biaxial (-), a=1.68, b=1.694, g=1.708, bire=0.0280
 

Calculated Properties of Ciprianiite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.75 gm/cc
note: Specific Gravity of Ciprianiite =3.97 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PECiprianiite = 396.65 barns/electron
U=PECiprianiite x relectron=1,486.95 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 340,906.86 (Gamma Ray American Petroleum Institute Units)
Concentration of Ciprianiite per GRapi unit = 2.93 (PPM)

Ciprianiite 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) 89.22 ± 22.31 grams of pure Ciprianiite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 8922.3 ±2230.6 grams of pure Ciprianiite .

Estimated Radioactivity from Ciprianiite - 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 / 7.84 cm 7,581,627 2.05E-04 340,906.86 112.08
100 gm / 3.64 cm 758,163 2.05E-05 34,090.69 11.21
10 gm / 1.69 cm 75,816 2.05E-06 3,409.07 1.12
1 gm / 7.84 mm 7,582 2.05E-07 340.91 0.11
0.1 gm / 3.64 mm 758 2.05E-08 34.09 0.01
0.01 gm / 1.69 mm 76 2.05E-09 3.41 0.00
0.001 gm / 0.78 mm 8 2.05E-10 0.34 0.00

Weight of pure Ciprianiite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.97 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
 

Ciprianiite Classification

Help on  Dana Class: Dana Class: 54.02.02.06 (54)Nesosilicate Borosilicates and Some Beryllosilicates
  (54.02)with B in [4] coordination
  (54.02.02)Hellandite group
 
54.02.02.01 Hellandite-(Y) (Ca,REE)4(Y,Ce)2(Al,[])2[Si4B4O22](OH)2 P 2/a 2/m
 
54.02.02.02 Tadzhikite-(Y)! Ca4(Y,Ce)2(Ti,Al,Fe,[])2[Si4B4O22](OH)2 P 2/a 2/m
 
54.02.02.03 Tadzhikite-(Ce) Ca4(Ce,Y)2(Ti,Al,Fe,[])2[Si4B4O22](OH)2 P 2/a 2/m
 
54.02.02.04 Hellandite-(Ce)! (Ca3REE)4Ce2Al[]2[Si4B4O22](OH)2 P 2/a 2/m
 
54.02.02.05 Mottanaite-(Ce)! Ca4(Ce,Ca)2AlBe2[Si4B4O22]O2 P 2/a 2/m
 
54.02.02.06 Ciprianiite! Ca4[(Th,U)(REE)]2(Al,[])2[Si4B4O22](OH,F)2 P 2/a 2/m
 
54.02.02.07 Piergorite-(Ce)! Ca8Ce2(Al0.5Fe0.5)([],Li,Be)2Si6B8O36(OH,F)2 P 2/a 2/m
Help on  Strunz Class: Strunz Class: 09.DK.20 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DK -Inosilicates with 5-periodic single chains
 
09.DK.20 Hellandite-(Y) (Ca,REE)4(Y,Ce)2(Al,[])2[Si4B4O22](OH)2 P 2/a 2/m
 
09.DK.20 Tadzhikite-(Ce) Ca4(Ce,Y)2(Ti,Al,Fe,[])2[Si4B4O22](OH)2 P 2/a 2/m
 
09.DK.20 Tadzhikite-(Y)! Ca4(Y,Ce)2(Ti,Al,Fe,[])2[Si4B4O22](OH)2 P 2/a 2/m
 
09.DK.20 Ciprianiite! Ca4[(Th,U)(REE)]2(Al,[])2[Si4B4O22](OH,F)2 P 2/a 2/m
 
09.DK.20 Hellandite-(Ce)! (Ca3REE)4Ce2Al[]2[Si4B4O22](OH)2 P 2/a 2/m
 
09.DK.20 Mottanaite-(Ce)! Ca4(Ce,Ca)2AlBe2[Si4B4O22]O2 P 2/a 2/m
 

Other Ciprianiite Information

Help on References: References: NAME( AmMin, 87:739) PHYS. PROP.(AmMin, 87:739) OPTIC PROP.(AmMin, 87:739)
Help on See Also: See Also: Links to other databases for Ciprianiite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
11 - Uranium Minerals

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

Ciprianiite

Ca4[(Th,U)(REE)]2(Al,[ ])2[Si4B4O22](OH,F)2
Dana No: 54.02.02.06 Strunz No: 09.DK.20
Locality:

 

Notes:

 

 
   
 


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