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Galgenbergite-(Ce) Mineral Data

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General Galgenbergite-(Ce) Information

Help on Chemical  Formula: Chemical Formula: Ca(REE)2(CO3)4•(H2O)
Help on Composition: Composition: Molecular Weight = 577.84 gm
   Calcium         6.87 %  Ca    9.61 % CaO
   Lanthanum      10.10 %  La   11.84 % La2O3
   Cerium         25.22 %  Ce   29.54 % Ce2O3
   Praeseodymium   2.93 %  Pr    3.42 % Pr2O3
   Hydrogen        0.35 %  H     3.12 % H2O
   Carbon          8.31 %  C    30.47 % CO2
   Neodymium      10.23 %  Nd   11.94 % Nd2O3
   Oxygen         35.99 %  O
                 ______        ______ 
                 100.00 %       99.93 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca0.99Ce1.04La0.42Nd0.41Pr0.12(CO3)4•(H2O)
Help on Environment: Environment: Small fissures in an albite-chlorite schist.
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Galgenberg Tunnel, St. Leoben, Steiermark, Austria. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the locality.
Help on Synonym: Synonym: IMA1997-036
 

Galgenbergite-(Ce) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0003:1:1.9398
Help on Cell Dimensions: Cell Dimensions: a = 6.388, b = 6.386, c = 12.388, Z = 2; alpha = 96.54°, beta = 100.85°, gamma = 100.51° V = 484.82 Den(Calc)= 3.96
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.049(1)(101), 3.005(0.65)(004), 5.901(0.59)(011), 3.899(0.49)(112), 3.125(0.45)(021), 4.468(0.38)(111), 4.695(0.38)(0
 

Physical Properties of Galgenbergite-(Ce)

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Colorless, White.
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Splintery - Brittle fracture leaving splintery fragments.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Rosette - Bundled tabular aggregates resembling rose flower petals.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Galgenbergite-(Ce)

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.002 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1767,KC= 0.1763
Ncalc = 1.7
Help on Optical Data: Optical Data: Biaxial (-), a=1.635, b=1.725, g=1.75, bire=0.1150
 

Calculated Properties of Galgenbergite-(Ce)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.66 gm/cc
note: Specific Gravity of Galgenbergite-(Ce) =3.98 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEGalgenbergite-(Ce) = 248.93 barns/electron
U=PEGalgenbergite-(Ce) x relectron= 911.28 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 47,558.71 (Gamma Ray American Petroleum Institute Units)
Concentration of Galgenbergite-(Ce) per GRapi unit = 21.03 (PPM)

Galgenbergite-(Ce) 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) 639.56 ±159.89 grams of pure Galgenbergite-(Ce) .

Estimated Radioactivity from Galgenbergite-(Ce) - weak
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 / 7.83 cm 1,085,844 2.93E-05 47,558.71 15.64
100 gm / 3.63 cm 108,584 2.93E-06 4,755.87 1.56
10 gm / 1.69 cm 10,858 2.93E-07 475.59 0.16
1 gm / 7.83 mm 1,086 2.93E-08 47.56 0.02
0.1 gm / 3.63 mm 109 2.93E-09 4.76 0.00
0.01 gm / 1.69 mm 11 2.93E-10 0.48 0.00
0.001 gm / 0.78 mm 1 2.93E-11 0.05 0.00

Weight of pure Galgenbergite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.98 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
Estimated Thorium Activity ( 2.42 % Th) From Sum REE Elements (48.48 % REE)
 

Galgenbergite-(Ce) Classification

Help on  Dana Class: Dana Class: 15.04.09.01 (15)Hydrated Carbonates
  (15.04)Dana Type
  (15.04.09)Dana Group
 
15.04.09.01 Galgenbergite-(Ce)! Ca(REE)2(CO3)4•(H2O) P1 1
Help on  Strunz Class: Strunz Class: 05.CC.40 05 - CARBONATES (NITRATES)
  05.C - Carbonates without Additional Anions, with H2O
  05.CC -With rare-earth elements (REE)
 
05.CC.40 Galgenbergite-(Ce)! Ca(REE)2(CO3)4•(H2O) P1 1
 

Other Galgenbergite-(Ce) Information

Help on References: References: NAME( CanMin, 42:226) PHYS. PROP.(CanMin, 42:226) OPTIC PROP.(CanMin, 42:226)
Help on See Also: See Also: Links to other databases for Galgenbergite-(Ce) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (UofA)
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info

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Print or Cut-and-Paste your Galgenbergite-(Ce) Specimen Label here :

Galgenbergite-(Ce)

Ca(REE)2(CO3)4•(H2O)
Dana No: 15.04.09.01 Strunz No: 05.CC.40
Locality:

 

Notes:

 

 
   
 


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