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Ammoniozippeite

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About AmmoniozippeiteHide

Formula:
(NH4)2[(UO2)2(SO4)O2]·H2O
Colour:
Yellow to yellowish orange
Lustre:
Vitreous
Hardness:
Specific Gravity:
4.433 (Calculated)
Crystal System:
Orthorhombic
Member of:
Name:
Named for the chemical relation to zippeite.
The (NH4) analogue of zippeite.


Classification of AmmoniozippeiteHide

Approved
Approval Year:
2017
First Published:
2018

Physical Properties of AmmoniozippeiteHide

Vitreous
Transparency:
Transparent
Colour:
Yellow to yellowish orange
Streak:
Pale yellow
Hardness:
2½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
{010} and {001} perfect, {100} good
Fracture:
Splintery
Density:
4.433 g/cm3 (Calculated)

Optical Data of AmmoniozippeiteHide

Type:
Biaxial (+)
RI values:
nα = 1.678(2) nβ = 1.724(3) nγ = 1.779(3)
2V:
Measured: 87.1° (5)
Max Birefringence:
δ = 0.101
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
Weak
Comments:
X colorless, Y orange yellow, and Z yellow orange (X ≪ Y < Z)

Chemical Properties of AmmoniozippeiteHide

Formula:
(NH4)2[(UO2)2(SO4)O2]·H2O
IMA Formula:
(NH4)2[(UO2)2(SO4)O2] · H2O

Chemical AnalysisHide

Empirical formulas:
Sample IDEmpirical Formula
1[(NH4)1.97Na0.032.00(U1.00O2)2(S1.01O4)O2·H2O
2[(NH4)1.99K0.06Na0.042.09(U1.01O2)2(S0.97O4)O2·H2O

Crystallography of AmmoniozippeiteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 8.7944(3) Å, b = 14.3296(7) Å, c = 17.1718(12) Å
Ratio:
a:b:c = 0.614 : 1 : 1.198
Unit Cell V:
2164 ų
Z:
8
Morphology:
Elongated on [100]
Comment:
Spacegroup: Ccmb

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.17(100)
4.270(13)
3.670(14)
3.580(21)
3.489(42)
3.138(63)
1.750(14)
1.697(18)
Comments:
From type description

Type Occurrence of AmmoniozippeiteHide

General Appearance of Type Material:
Clusters of acicular to bladed crystals, to 2 mm.
Place of Conservation of Type Material:
Type material is deposited in the mineralogical collections of the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue number 66625 (Burro - holotype) and 66626 (Blue Lizard- cotype)
Empirical Formula of Type Material:
[(NH4)1.99K0.06Na0.042.09(U1.01O2)2(S0.97O4)O2·H2O
Reference:
Kampf, A.R., Plášil, J., Olds, T.A., Nash, B.P., Marty, J. (2018) Ammoniozippeite, a New Uranyl Sulfate Mineral from the Blue Lizard Mine, San Juan County, Utah, and the Burro Mine, San Miguel County, Colorado, USA. Canadian Mineralogist: 56: 235-245.

Synonyms of AmmoniozippeiteHide

Relationship of Ammoniozippeite to other SpeciesHide

Member of:
Other Members of this group:
CobaltzippeiteCo(UO2)2(SO4)O2 · 3.5H2OMon. 2/m : B2/m
MagnesiozippeiteMg(UO2)2(SO4)O2 · 3.5H2OMon. 2/m : B2/m
NatrozippeiteNa5(UO2)8(SO4)4O5(OH)3 · 12H2OMon. 2/m : P21/m
NickelzippeiteNi2(UO2)6(SO4)3(OH)10 · 16H2O Mon.
PlavnoiteK0.8Mn0.6[(UO2)2O2(SO4)]·3.5H2OMon. 2/m : B2/m
PseudojohanniteCu3(OH)2[(UO2)4(SO4)2]· 12H2OTric.
Sejkoraite-(Y)Y2(UO2)8(SO4)4O6(OH)2 · 26H2OTric. 1 : P1
ZinczippeiteZn(UO2)2(SO4)O2 · 3.5H2OMon. 2/m : B2/m
ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2OMon. 2 : B2

Fluorescence of AmmoniozippeiteHide

Dull green yellow under 405 nm laser light.

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for AmmoniozippeiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kampf, A.R., Plášil, J., Olds, T.A.,Nash, B.P. and Marty, J. (2017) Ammoniozippeite, IMA 2017-073. CNMNC Newsletter No. 40, December 2017, page 1579; Mineralogical Magazine: 81: 1577–1581.
Kampf, A.R., Plášil, J., Olds, T.A., Nash, B.P., Marty, J. (2018) Ammoniozippeite, a New Uranyl Sulfate Mineral from the Blue Lizard Mine, San Juan County, Utah, and the Burro Mine, San Miguel County, Colorado, USA. Canadian Mineralogist: 56: 235-245.

Internet Links for AmmoniozippeiteHide

Localities for AmmoniozippeiteHide

ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
USA (TL)
 
  • Colorado
    • San Miguel Co.
      • Slick Rock District
Kampf, A.R., Plášil, J., Olds, T.A.,Nash, B.P. and Marty, J. (2017) Ammoniozippeite, IMA 2017-073. CNMNC Newsletter No. 40, December 2017, page 1579; Mineralogical Magazine: 81: 1577–1581; Kampf, A.R., Plášil, J., Olds, T.A., Nash, B.P., Marty, J. (2018) Ammoniozippeite, a New Uranyl Sulfate Mineral from the Blue Lizard Mine, San Juan County, Utah, and the Burro Mine, San Miguel County, Colorado, USA. Canadian Mineralogist: 56: 235-245.
  • Utah
    • San Juan Co.
      • White Canyon District
        • Red Canyon
Kampf, A.R., Plášil, J., Olds, T.A.,Nash, B.P. and Marty, J. (2017) Ammoniozippeite, IMA 2017-073. CNMNC Newsletter No. 40, December 2017, page 1579; Mineralogical Magazine: 81: 1577–1581; Kampf, A.R., Plášil, J., Olds, T.A., Nash, B.P., Marty, J. (2018) Ammoniozippeite, a New Uranyl Sulfate Mineral from the Blue Lizard Mine, San Juan County, Utah, and the Burro Mine, San Miguel County, Colorado, USA. Canadian Mineralogist: 56: 235-245.
        • White Canyon
          • Fry Mesa
EDS and XRD analyzed by Joy Desor.
Mineral and/or Locality  
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