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Nitscheite

A valid IMA mineral species
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ⓘGreen Lizard Mine, Red Canyon Mining District, San Juan County, Utah, USA
Chemically related tobeshtauite,meitnerite,ammoniozippeite and, somewhat, toammoniomathesiusite,greelizardite, andredcanyonite.

New structure type.

The synthetic K analogue of nitscheite is known.


Unique Identifiers
Approval year:
2021
First published:
2022

Classification of Nitscheite

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
E : Uranyl sulfates
C : With medium-sized and large cations

Mineral Symbols
Transparency:
Transparent
Colour:
Yellow
Streak:
Very pale yellow
Hardness:
2 onMohs scale
Comment:
Measured with scratch tests
Tenacity:
Brittle
Cleavage:
Distinct/Good
On {010}
Fracture:
Sub-Conchoidal
Comment:
Fracture described as 'curved'.
Density:
3.30(2) g/cm3 (Measured)    3.278 g/cm3 (Calculated)
Comment:
Measured by floatation; calculated using empirical formula

Optical Data of Nitscheite
Surface Relief:
Moderate
Dispersion:
None observed
Optical Extinction:
X = b; Z ≈ [101]
Pleochroism:
Visible
Comments:
X = colorless, Y and Z = yellow.
Comments:
Absorption: X < Y ≈ Z.

Chemistry of Nitscheite

Crystallography of Nitscheite
General Appearance of Type Material:
Subparallel and divergent intergrowths of yellow prisms, to 0.3 mm.
Place of Conservation of Type Material:
Mineralogical collections of the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue numbers 75103 and 75104 (cotypes)
Geological Setting of Type Material:
Secondary mineral formed by post-mining oxidation of asphaltum-rich sandstone beds laced with uraninite and sulfides in a damp underground environment.
Associated Minerals at Type Locality:
Chinleite-(Y)GypsumPyriteQuartzRietveldite

Synonyms of Nitscheite

Other Language Names for Nitscheite

Related Minerals -Strunz-mindat GroupingMon. 2/m :P21/b7.EC.Oldsite-(K)K2Fe2+[(UO2)(SO4)2]2(H2O)8Orth.mm2 :Pmn217.EC.AdolfpateraiteK(UO2)(SO4)(OH)(H2O)Mon. 2/m :P21/b7.EC.Libbyite(NH4)2(Na2◻)[(UO2)2(SO4)3(H2O)]2 · 7H2OTet. 422 :P412127.EC.SeaborgiteLiK2Na6(UO2)(SO4)5(SO3OH)(H2O)Tric.1 :P17.EC.05ZinczippeiteZn(UO2)2(SO4)O2 · 3.5H2OMon. 2/m :B2/m7.EC.05ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2OMon. 2 :B27.EC.05CobaltzippeiteCo(UO2)2(SO4)O2 · 3.5H2OMon. 2/m :B2/m7.EC.05NickelzippeiteNi2(UO2)6(SO4)3(OH)10 · 16H2OMon.7.EC.05Redcanyonite(NH4)2Mn[(UO2)4O4(SO4)2](H2O)4Mon. 2/m :B2/m7.EC.05NatrozippeiteNa5(UO2)8(SO4)4O5(OH)3 · 12H2OMon. 2/m :P21/m7.EC.05MagnesiozippeiteMg(UO2)2(SO4)O2 · 3.5H2OMon. 2/m :B2/m7.EC.05Ammoniozippeite(NH4)2[(UO2)2(SO4)O2] · H2OOrth.mmm(2/m2/m2/m) :Cmca7.EC.05PlavnoiteK0.8Mn0.6[(UO2)2O2(SO4)] · 3.5H2OMon. 2/m :B2/m7.EC.10RabejaciteCa(UO2)4(SO4)2(OH)6 · 6H2OTric.1 :P17.EC.10Svornostite-(NH4)(NH4)2Mg(UO2)2(SO4)4(H2O)8Orth.mm2 :Pmn217.EC.10Svornostite-(K)K2Mg[(UO2)(SO4)2]2(H2O)8Orth.mm2 :Pmn217.EC.15Sejkoraite-(Y)Y2(UO2)8(SO4)4O6(OH)2 · 26H2OTric.1 :P17.EC.15MarécottiteMg3(UO2)8(SO4)4O6(OH)2 · 28H2OTric.1 :P17.EC.15HubbarditeMg(H2O)6[(UO2)2O(OH)(SO4)]2 · 8H2OOrth.mmm(2/m2/m2/m) :Fddd7.EC.20PseudojohanniteCu3(UO2)4(SO4)2O4(OH)2 · 12H2OTric.1 :P17.EC.40BluelizarditeNa7(UO2)(SO4)4Cl(H2O)2Mon. 2/m :B2/b7.EC.45MeisseriteNa5(UO2)(SO4)3(SO3OH)(H2O)Tric.1 :P17.EC.45FermiiteNa4(UO2)(SO4)3 · 3H2OOrth.mm2 :Pmn217.EC.45OppenheimeriteNa2(UO2)(SO4)2 · 3H2OTric.1 :P17.EC.50FeynmaniteNa(UO2)(SO4)(OH) · 3.5H2OMon.7.EC.50PlášiliteNa(UO2)(SO4)(OH) · 2H2OMon. 2/m :P21/b7.EC.55GeschieberiteK2(UO2)(SO4)2 · 2H2OOrth.mm2 :Pna217.EC.60OttohahniteNa6(UO2)2(SO4)5(H2O)7 · 1.5H2OTric.1 :P17.EC.65PéligotiteNa6(UO2)(SO4)4 · 4H2OTric.1 :P17.EC.70KlaprothiteNa6(UO2)(SO4)4 · 4H2OMon. 2/m :P21/b7.EC.75Lussierite Na10[(UO2)(SO4)4](SO4)2 · 3(H2O)Mon.m :Bb7.EC.80NavrotskyiteK2Na10(UO2)3(SO4)9 · 2H2OOrth.mmm(2/m2/m2/m) :Pbcm7.EC.85Pseudomeisserite-(NH4)(NH4)2Na4[(UO2)2(SO4)5] · 4H2OMon. 2/m :P21/b7.EC.90WetherilliteNa2Mg(UO2)2(SO4)4 · 18H2OMon. 2/m :P21/b

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

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    • References for NitscheiteⓘKrunkelbach Valley Uranium depositMangold et al. (10/21)
    USA (TL)
     
    Kampf+5 other references
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