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Swartzite

A valid IMA mineral species - grandfathered
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MgCa(UO2)(CO3)3 · 12H2O
Colour:
Bright green, yellowish-white (dehydrated).
Specific Gravity:
2.3
Crystal System:
Monoclinic
Name:
Named in honor of Charles Kephart Swartz (03 January 1861, Baltimore, Maryland, USA - 29 November 1949), Professor of Geology, Johns Hopkins University, Baltimore, Maryland, USA and 'an inspiring teacher to many generations of students'.
Type Locality:
ⓘHillside Mine, Bozarth Mesa, Bagdad, Eureka Mining District, Yavapai County, Arizona, USA
This page provides mineralogical data about Swartzite.


Unique Identifiers
IMA Formula:
CaMg(UO2)(CO3)3 · 12H2O
First published:
1951
Type description reference:
Axelrod, J.M., Grimaldi, F.S., Milton, C., Murata, K.J. (1951) The uranium minerals from the Hillside mine, Yavapai County, Arizona. American Mineralogist: 36: 1-22.

Classification of Swartzite

5 : CARBONATES (NITRATES)
E : Uranyl Carbonates
D : UO2:CO3 = 1:3
Dana 8th ed.:
15.3.3.2

15 : HYDRATED NORMAL CARBONATES
3 : AmBn(XO3)p·xH2O, with (m+n):p = 1:1
Hey's CIM Ref.:
11.11.13

11 : Carbonates
11 : Carbonates of Cr and U

Mineral Symbols
Surface Relief:
Moderate
Dispersion:
r > v strong
Pleochroism:
Visible
Comments:
X = Colourless
Y = Yellow
Z = Yellow

Chemistry of Swartzite

Crystallography of Swartzite
General Appearance of Type Material:
Small vivid green clusters on a layer of snow white gypsum.
Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 106107, 106108.
Geological Setting of Type Material:
Post-mining efflorescences on mine walls.
Associated Minerals at Type Locality:
AndersoniteBayleyiteGypsumSchröckingerite
Reference:
Axelrod, J.M., Grimaldi, F.S., Milton, C., Murata, K.J. (1951) The uranium minerals from the Hillside mine, Yavapai County, Arizona. American Mineralogist: 36: 1-22.

Other Language Names for Swartzite

Common AssociatesTric.1 :P15.ED.ParamarkeyiteCa2(UO2)(CO3)3 · 5H2OMon. 2/m5.ED.05BayleyiteMg2(UO2)(CO3)3 · 18H2OMon. 2/m :P21/b5.ED.15AlbrechtschraufiteCa4Mg(UO2)2(CO3)6F2 · 17-18H2OTric.1 :P15.ED.20LiebigiteCa2(UO2)(CO3)3 · 11H2OOrth.mm25.ED.25RabbittiteCa3Mg3(UO2)2(CO3)6(OH)4 · 18H2OMon.5.ED.30AndersoniteNa2Ca(UO2)(CO3)3 · 6H2OTrig.3 :R35.ED.35GrimseliteK3Na(UO2)(CO3)3 · H2OHex.6m2 :P62c5.ED.40WidenmannitePb2(OH)2[(UO2)(CO3)2]Orth.mmm(2/m2/m2/m) :Pmmn5.ED.45Znucalite Zn10Ca0.83(UO2)0.83(CO3)4(OH)15.31(H2O)5.48Mon. 2/m :P21/m5.ED.50AgricolaiteK4(UO2)(CO3)3Mon. 2/m :B2/b5.ED.50ČejkaiteNa4(UO2)(CO3)3Mon.m :Bb5.ED.55LínekiteK2Ca3[(UO2)(CO3)3]2 · 8H2OOrth.mmm(2/m2/m2/m) :Pnnm5.ED.55BrauneriteK2Ca(UO2)(CO3)3 · 6H2OMon. 2/m :P21/b5.ED.60LeószilárditeNa6Mg(UO2)2(CO3)6 · 6H2OMon. 2/m :B2/m5.ED.65PseudomarkeyiteCa8(UO2)4(CO3)12 · 21H2OMon. 2/m :P21/m5.ED.65NatromarkeyiteNa2Ca8(UO2)4(CO3)13 · 27H2OOrth.mmm(2/m2/m2/m) :Pmmn5.ED.65MarkeyiteCa9(UO2)4(CO3)13 · 28H2OOrth.mmm(2/m2/m2/m) :Pmmn5.ED.70PaddlewheeliteMgCa5Cu2(UO2)4(CO3)12(H2O)33Mon.m :Pb

Radioactivityshield). This calculation provides a 'worst-case' or 'maximum risk' estimate because it assumes the sample is a point source and entirely neglects any self-shielding where radiation is absorbed within the mineral itself, meaning actual doses will typically be lower. The resulting dose rate (D) is expressed in microsieverts per hour (μSv/h).

D = ((AU × ΓU) + (ATh × ΓTh) + (AK × ΓK)) / r2 × μshield

Fluorescence of Swartzite

Other Information
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    • External Links:
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  • Raman and XRD data at RRUFF project
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  • American Mineralogist Crystal Structure Database
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    • References for SwartziteⓘHillside Mine (TL)Dana 7:II:236 & 238.+6 other referencesEckel et al. (1997)Eckel et al. (1997)Bullock (1981)
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