Mineralogy Database

Swartzite Mineral Data

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General Swartzite Information

Help on Chemical  Formula: Chemical Formula: CaMg(UO2)(CO3)3•12(H2O)
Help on Composition: Composition: Molecular Weight = 730.62 gm
   Calcium     5.49 %  Ca    7.68 % CaO
   Magnesium   3.33 %  Mg    5.52 % MgO
   Uranium    32.58 %  U    36.96 % UO2
   Hydrogen    3.31 %  H    29.59 % H2O
   Carbon      4.93 %  C    18.07 % CO2
   Oxygen     50.37 %  O
             ______        ______ 
             100.00 %       97.81 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaMg(UO2)(CO3)3•12(H2O)
Help on Environment: Environment: Mine wall efflorescence.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1951
Help on Locality: Locality: Hillside mine, Yavapai County, Arizona, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Charles K. Swartz (1861-1949), geologist and mineralogist, John Hopkins University.
Help on Name Pronunciation: Name Pronunciation: Swartzite + Pronunciation Say SWARTZITE
Help on Synonym: Synonym: ICSD 29557
  PDF 4-111
 

Swartzite Image

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  Swartzite

Comments: Pale yellow powdery swartzite, intermixed with gypsum on schist rock.
Location: Hillside Mine, Bagdad, Yavapai County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Swartzite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7554:1:0.4395
Help on Cell Dimensions: Cell Dimensions: a = 11.12, b = 14.72, c = 6.47, Z = 2; beta = 99.433° V = 1,044.73 Den(Calc)= 2.32
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.5(1), 8.76(1), 7.31(0.9),
 

Physical Properties of Swartzite

Help on Color: Color: Yellowish, Yellowish white, Light green.
Help on Density: Density: 2.3
Help on Habit: Habit: Efflorescences - Crystals covering matrix, generally produced from transpiro-evaporation.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Luminescence: Luminescence: Fluorescent, Short UV=bright green, Long UV=bright green.
Help on Streak: Streak: white
 

Optical Properties of Swartzite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.082 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.073 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2177,KPDmeas= 0.2196,KC= 0.2028
Ncalc = 1.47
Help on Optical Data: Optical Data: Biaxial (-), a=1.465, b=1.51, g=1.54, bire=0.0750
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): yellow.
Help on Pleochroism (z): Pleochroism (z): yellow.
 

Calculated Properties of Swartzite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.22 gm/cc
note: Specific Gravity of Swartzite =2.32 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0065355828
Boson Index = 0.9934644172
Help on Photoelectric: Photoelectric: PESwartzite = 772.43 barns/electron
U=PESwartzite x relectron=1,716.92 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 2,660,580.35 (Gamma Ray American Petroleum Institute Units)
Concentration of Swartzite per GRapi unit = 375.86 (PPB)

Swartzite 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) 11.43 ± 2.86 grams of pure Swartzite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 1143.2 ±285.81 grams of pure Swartzite .

Estimated Radioactivity from Swartzite - 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 / 9.37 cm 58,316,329 1.58E-03 2,660,580.35 874.71
100 gm / 4.35 cm 5,831,633 1.58E-04 266,058.04 87.47
10 gm / 2.02 cm 583,163 1.58E-05 26,605.80 8.75
1 gm / 9.37 mm 58,316 1.58E-06 2,660.58 0.87
0.1 gm / 4.35 mm 5,832 1.58E-07 266.06 0.09
0.01 gm / 2.02 mm 583 1.58E-08 26.61 0.01
0.001 gm / 0.94 mm 58 1.58E-09 2.66 0.00

Weight of pure Swartzite in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.32 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
 

Swartzite Classification

Help on  Dana Class: Dana Class: 15.03.03.02 (15)Hydrated Carbonates
  (15.03)where A+m B++n (XO3)p � x(H2O), (m+n):p = 1:1 and containing U, Th, Zr, Y
  (15.03.03)Dana Group
 
15.03.03.01 Bayleyite Mg2(UO2)(CO3)3•18(H2O) P 21/a 2/m
 
15.03.03.02 Swartzite CaMg(UO2)(CO3)3•12(H2O) P 21/m 2/m
Help on  Strunz Class: Strunz Class: 05.ED.10 05 - CARBONATES (NITRATES)
  05.E - Uranyl Carbonates
  05.ED -UO2:CO3 = 1:3
 
05.ED.10 Swartzite CaMg(UO2)(CO3)3•12(H2O) P 21/m 2/m
 

Other Swartzite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Swartzite :
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
16 - WWW-MINCRYST

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

Swartzite

CaMg(UO2)(CO3)3•12(H2O)
Dana No: 15.03.03.02 Strunz No: 05.ED.10
Locality:

 

Notes:

 

 
   
 


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