Quenselite
A valid IMA mineral species - grandfathered
This page is currently not sponsored. Click here to sponsor this page.
About Quenselite
Percy Quensel
Formula:
PbMnO2(OH)
Colour:
Black
Lustre:
Adamantine, Metallic
Hardness:
2½
Specific Gravity:
6.842
Crystal System:
Monoclinic
Name:
Named after Percy Dudgeon Quensel (8. September 1881 in Marstrand, Bohuslän - 3. March 1966), Professor of Mineralogy, University of Stockholm, Sweden and editor of the journal Geologiska Föreningens i Stockholm Förhandlingar.
This page provides mineralogical data about Quenselite.
Unique Identifiers
Mindat ID:
3340
Long-form identifier:
mindat:1:1:3340:0
IMA Classification of Quenselite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Pb2+Mn3+O2(OH)
First published:
1925
Classification of Quenselite
4.FE.30
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
E : Hydroxides with OH, without H2O; sheets of edge-sharing octahedra
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
E : Hydroxides with OH, without H2O; sheets of edge-sharing octahedra
6.4.1.2
6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
4 : Miscellaneous
6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
4 : Miscellaneous
7.11.29
7 : Oxides and Hydroxides
11 : Oxides of Sn and Pb
7 : Oxides and Hydroxides
11 : Oxides of Sn and Pb
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 for Standard |
|---|---|---|
| Qns | 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 Quenselite
Adamantine, Metallic
Transparency:
Translucent, Opaque
Colour:
Black
Streak:
Dark brownish gray
Hardness:
2½ on Mohs scale
Hardness:
VHN100=0171 - 268 kg/mm2 - Vickers
Tenacity:
Flexible
Cleavage:
Perfect
on {001} - micaceous
on {001} - micaceous
Comment:
Somewhat malleable
Density:
6.842 g/cm3 (Measured) 7.133 g/cm3 (Calculated)
Optical Data of Quenselite
Type:
Biaxial (+)
RI values:
nα = 2.3
Surface Relief:
Unknown
Anisotropism:
Strong
Dispersion:
r > v
Optical Extinction:
X = b; Y ≃ c.
Reflectivity:
| Wavelength | R1 (%) | R2 (%) |
|---|---|---|
| 400nm | 28.1% | 32.6% |
| 420nm | 26.7% | 30.9% |
| 440nm | 25.3% | 29.2% |
| 460nm | 24.0% | 27.7% |
| 480nm | 23.0% | 26.3% |
| 500nm | 22.1% | 25.1% |
| 520nm | 21.4% | 24.2% |
| 540nm | 20.8% | 23.4% |
| 560nm | 20.4% | 22.8% |
| 580nm | 20.0% | 22.2% |
| 600nm | 19.7% | 21.8% |
| 620nm | 19.5% | 21.5% |
| 640nm | 19.4% | 21.3% |
| 660nm | 19.2% | 21.0% |
| 680nm | 19.2% | 20.9% |
| 700nm | 19.2% | 20.9% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 32.6%.
R1 shown in black, R2 shown in red
Comments:
Absorption: Z > X.
Chemistry of Quenselite
Mindat Formula:
PbMnO2(OH)
Element Weights:
Elements listed:
Crystallography of Quenselite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P2/b
Cell Parameters:
a = 5.61 Å, b = 5.70 Å, c = 9.15 Å
β = 93°
β = 93°
Ratio:
a:b:c = 0.984 : 1 : 1.605
Unit Cell V:
292.19 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Crystals tabular {010}; also slightly elongated [001] or [100]. Striated on {011} parallel to [100].
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0010724 | Quenselite | Rouse R C (1971) The crystal structure of quenselite Zeitschrift fur Kristallographie 134 321-332 |  | 1971 | Langban, Sweden | 0 | 293 |
| 0020691 | Quenselite | Bystrom A (1944) The structure of quenselite, PbMnO2OH Arkiv for Kemi, Mineralogi och Geologi 19 1-9 | 1944 | Langban, Sweden | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.04 Å | (100) |
| 2.72 Å | (80) |
| 3.68 Å | (70) |
| 3.60 Å | (70) |
| 2.95 Å | (60) |
| 2.44 Å | (40) |
| 2.08 Å | (40) |
Comments:
Långban mine, Sweden.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-? alteration and/or metamorphism | |
| 32 : Ba/Mn/Pb/Zn deposits, including metamorphic deposits |
Type Occurrence of Quenselite
Place of Conservation of Type Material:
No designated type material.
Geological Setting of Type Material:
Metamorphosed manganese deposit.
Associated Minerals at Type Locality:
Other Language Names for Quenselite
Common Associates
Associations Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 4.FE. | Nannoniite | Al2(OH)5F |
| 4.FE.05 | Brucite | Mg(OH)2 |
| 4.FE.05 | Theophrastite | Ni(OH)2 |
| 4.FE.05 | Amakinite | Fe2+(OH)2 |
| 4.FE.05 | Portlandite | Ca(OH)2 |
| 4.FE.05 | Pyrochroite | Mn(OH)2 |
| 4.FE.10 | Doyleite | Al(OH)3 |
| 4.FE.10 | Bayerite | Al(OH)3 |
| 4.FE.10 | Nordstrandite | Al(OH)3 |
| 4.FE.10 | Gibbsite | Al(OH)3 |
| 4.FE.15 | Lepidocrocite | Fe3+O(OH) |
| 4.FE.15 | Böhmite | AlO(OH) |
| 4.FE.20 | Heterogenite | Co3+O(OH) |
| 4.FE.20 | Grimaldiite | CrO(OH) |
| 4.FE.25 | Lithiophorite | (Al,Li)MnO2(OH)2 |
| 4.FE.25 | Feitknechtite | Mn3+O(OH) |
| 4.FE.35 | Ferrihydrite | Fe3+10O14(OH)2 |
| 4.FE.40 | Vernadite | (Mn4+,Fe3+,Ca,Na)(O,OH)2 · nH2O |
| 4.FE.40 | Feroxyhyte | Fe3+O(OH) |
| 4.FE.45 | Quetzalcoatlite | Zn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2y |
| 4.FE.50 | Fuettererite | Pb3Cu2+6Te6+O6(OH)7Cl5 |
Other Information
Notes:
Soluble in dilute acids including acetic acid. With HCl evolves Cl2. Upon heating loses water.
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 Quenselite
mindat.org URL:
https://www.mindat.org/min-3340.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 Quenselite
Reference List:
Orcel, Jean, Pavlovitch, Stoyan (1931) Les caractères microscopiques des oxydes de manganèse et des manganites naturels (Détermination de leurs pouvoirs réflecteurs) Bulletin de Minéralogie, 54 (5) 108-179 doi:10.3406/bulmi.1931.4130
Localities for Quenselite
Showing 12 localities.
symbol to view information about a locality.
The 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).
All localities listed without proper references should be considered as questionable.
Australia | |
| Sorrell (n.d.) |
China | |
| Gorshkov et al. (2006) |
India | |
| Raju et al. (1972) |
| Rasul (1965) |
Japan | |
| Nambu & Yoshida (1993) |
Mexico | |
| Calderon-Rodarte et al. (2017) |
Pacific Ocean | |
| Volokhina et al. (2020) +2 other references |
Romania | |
| HÎRTOPANU et al. (2025) |
Sweden (TL) | |
| Rouse (1971) +1 other reference |
| Christopher O'Neill photo & collection ( old label) | |
UK | |
| Nicholson (1989) |
USA | |
| U.S. GEOLOGICAL SURVEY PROFESSIONAL ... +1 other reference |
Quick NavTopAbout QuenseliteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence Other LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Långban Mine, Långban Ore District, Filipstad, Värmland County, Sweden