Plášilite
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Plášilite
Formula:
Na(UO2)(SO4)(OH) · 2H2O
Colour:
Greenish yellow
Lustre:
Vitreous
Hardness:
2 - 3
Specific Gravity:
3.726 (Calculated)
Crystal System:
Monoclinic
Name:
Named in honour of Jakub Plášil (born 1984), crystallographer at the Department of Structure Analysis, Institute of Physics, Academy of Sciences of the Czech Republic, for his significant work on the crystal chemistry of hydrated oxysalts and hexavalent uranium minerals and compounds.
This page provides mineralogical data about Plášilite.
Unique Identifiers
Mindat ID:
46145
Long-form identifier:
mindat:1:1:46145:6
GUID
(UUID V4):
(UUID V4):
cb736aab-38e8-4cd6-bbd6-cf941fd18914
IMA Classification of Plášilite
Approved
Approval year:
2014
First published:
2015
Classification of Plášilite
7.EC.50
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
E : Uranyl sulfates
C : With medium-sized and large cations
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
E : Uranyl sulfates
C : With medium-sized and large cations
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Pšl | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Plášilite
Vitreous
Transparency:
Transparent
Colour:
Greenish yellow
Streak:
White
Hardness:
2 - 3 on Mohs scale
Comment:
Probably between 2 and 3
Tenacity:
Brittle
Cleavage:
Perfect
Two perfect cleavages, {010} and {001}.
Two perfect cleavages, {010} and {001}.
Density:
3.726 g/cm3 (Calculated)
Optical Data of Plášilite
Type:
Biaxial (+)
RI values:
nα = 1.556(1) nβ = 1.581(1) nγ = 1.608(1)
2V:
Measured: 88° , Calculated: 89°
Max Birefringence:
δ = 0.052
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
Dispersion is moderate, r < v.
Pleochroism:
Visible
Comments:
X = nearly colourless, Y = very pale yellow, Z = pale yellow; X < Y < Z.
Chemistry of Plášilite
Mindat Formula:
Na(UO2)(SO4)(OH) · 2H2O
Crystallography of Plášilite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 8.7122(6) Å, b = 13.8368(4) Å, c = 7.0465(2) Å
β = 112.126(8)°
β = 112.126(8)°
Ratio:
a:b:c = 0.63 : 1 : 0.509
Unit Cell V:
786.89 ų
Z:
4
Morphology:
As long, thin blades, elongated on [001] and flattened on {100}; rarely as prisms, also elongated on [001]. Forms observed : {100}, {010} and {011}.
Twinning:
Commonly twinned on {100}.
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
6.90 Å | (100) |
5.85 Å | (99) |
4.024 Å | (57) |
3.492 Å | (82) |
3.136 Å | (40) |
2.690 Å | (25) |
2.618 Å | (34) |
1.9212 Å | (30) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47b : [Sulfates and sulfites] | |
47f : [Uranyl (U⁶⁺) minerals] | |
Stage 10b: Anthropogenic minerals | <10 Ka |
55 : Anthropogenic mine minerals |
Type Occurrence of Plášilite
General Appearance of Type Material:
In and on sandstone. A low-temperature, secondary mineral formed by the post-mining weathering of uraninite.
Place of Conservation of Type Material:
In the collections of the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue numbers 64126, 64127, 64128, 64129 and 64130, and the Fersman Mineralogical Museum of the Russian
Academy of Sciences,
Academy of Sciences,
Geological Setting of Type Material:
Sandstone
Associated Minerals at Type Locality:
Reference:
Kampf, A.R., Kasatkin, A.V., Čejka, J., Marty, J. (2015) Plášilite, Na(UO2)(SO4)(OH)•2H2O, a new uranyl sulfate mineral from the Blue Lizard mine, San Juan County, Utah, USA. Journal of Geosciences: 60: 1-10.
Synonyms of Plášilite
Common Associates
Associated Minerals Based on Photo Data:
5 photos of Plášilite associated with Mudstone | |
2 photos of Plášilite associated with Natrozippeite | Na5(UO2)8(SO4)4O5(OH)3 · 12H2O |
2 photos of Plášilite associated with Sandstone | |
1 photo of Plášilite associated with Johannite | Cu(UO2)2(SO4)2(OH)2 · 8H2O |
1 photo of Plášilite associated with Chalcanthite | CuSO4 · 5H2O |
Related Minerals - Strunz-mindat Grouping
7.EC. | Adolfpateraite | K(UO2)(SO4)(OH)(H2O) |
7.EC. | Beshtauite | (NH4)2(UO2)(SO4)2 · 2H2O |
7.EC. | Seaborgite | LiK2Na6(UO2)(SO4)5(SO3OH)(H2O) |
7.EC. | Nitscheite | (NH4)2[(UO2)2(SO4)3(H2O)2] · 3H2O |
7.EC. | Oldsite | K2Fe2+[(UO2)(SO4)2]2(H2O)8 |
7.EC. | Libbyite | (NH4)2(Na2◻)[(UO2)2(SO4)3(H2O)]2 · 7H2O |
7.EC.05 | Cobaltzippeite | Co(UO2)2(SO4)O2 · 3.5H2O |
7.EC.05 | Magnesiozippeite | Mg(UO2)2(SO4)O2 · 3.5H2O |
7.EC.05 | Nickelzippeite | Ni2(UO2)6(SO4)3(OH)10 · 16H2O |
7.EC.05 | Natrozippeite | Na5(UO2)8(SO4)4O5(OH)3 · 12H2O |
7.EC.05 | Zinczippeite | Zn(UO2)2(SO4)O2 · 3.5H2O |
7.EC.05 | Zippeite | K3(UO2)4(SO4)2O3(OH) · 3H2O |
7.EC.05 | Plavnoite | K0.8Mn0.6[(UO2)2O2(SO4)] · 3.5H2O |
7.EC.05 | Redcanyonite | (NH4)2Mn[(UO2)4O4(SO4)2](H2O)4 |
7.EC.05 | Ammoniozippeite | (NH4)2[(UO2)2(SO4)O2] · H2O |
7.EC.10 | Rabejacite | Ca(UO2)4(SO4)2(OH)6 · 6H2O |
7.EC.10 | Svornostite | K2Mg[(UO2)(SO4)2]2 · 8H2O |
7.EC.15 | Marécottite | Mg3(UO2)8(SO4)4O6(OH)2 · 28H2O |
7.EC.15 | Sejkoraite-(Y) | Y2(UO2)8(SO4)4O6(OH)2 · 26H2O |
7.EC.20 | Pseudojohannite | Cu3(OH)2[(UO2)4(SO4)2] · 12H2O |
7.EC.40 | Bluelizardite | Na7(UO2)(SO4)4Cl(H2O)2 |
7.EC.45 | Meisserite | Na5(UO2)(SO4)3(SO3OH)(H2O) |
7.EC.45 | Fermiite | Na4(UO2)(SO4)3 · 3H2O |
7.EC.45 | Oppenheimerite | Na2(UO2)(SO4)2 · 3H2O |
7.EC.50 | Feynmanite | Na(UO2)(SO4)(OH) · 3.5H2O |
7.EC.55 | Geschieberite | K2(UO2)(SO4)2 · 2H2O |
7.EC.60 | Ottohahnite | Na6(UO2)2(SO4)5(H2O)7 · 1.5H2O |
7.EC.65 | Péligotite | Na6(UO2)(SO4)4 · 4H2O |
7.EC.70 | Klaprothite | Na6(UO2)(SO4)4 · 4H2O |
7.EC.75 | Lussierite | Na10[(UO2)(SO4)4](SO4)2 · 3(H2O) |
7.EC.80 | Navrotskyite | K2Na10(UO2)3(SO4)9 · 2H2O |
7.EC.85 | Pseudomeisserite-(NH4) | (NH4)2Na4[(UO2)2(SO4)5] · 4H2O |
7.EC.90 | Wetherillite | Na2Mg(UO2)2(SO4)4 · 18H2O |
Fluorescence of Plášilite
Fluoresces bluish white under both long-wave and short-wave UV
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Plášilite
mindat.org URL:
https://www.mindat.org/min-46145.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Plášilite
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2014) New minerals and nomenclature modifications approved in 2014, CNMNC Newsletter No 21. Mineralogical Magazine, 78 (4) 797-804 doi:10.1180/minmag.2014.078.4.03
Localities for Plášilite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
USA (TL) | |
| Mineralogical Magazine +3 other references |
Kampf et al. (2017) | |
Kampf et al. (2018) | |
| Collection of Alex Earl |
Quick NavTopAbout PlášiliteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsCommon AssociatesStrunz-MindatFluorescence Other InformationInternet Links References Localities Locality List
Blue Lizard Mine, Red Canyon Mining District, San Juan County, Utah, USA