Quenselite
A valid IMA mineral species - grandfathered
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About Quenselite
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
GUID
(UUID V4):
(UUID V4):
83d7b972-a8bd-4887-9ffe-aabe316b4062
IMA Classification of Quenselite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
PbMn3+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 |
---|---|---|
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 = 2.300
Max Birefringence:
δ = 2.300
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
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). Top of box is 100%. Peak reflectance is 32.6%.
R1 shown in black, R2 shown in red
Comments:
Absorption: Z > X.
Chemistry of Quenselite
Mindat Formula:
PbMnO2(OH)
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
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CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
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Labels
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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-𝑇 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
Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
4.FE.05 | Amakinite | Fe2+(OH)2 |
4.FE.05 | Brucite | Mg(OH)2 |
4.FE.05 | Portlandite | Ca(OH)2 |
4.FE.05 | Pyrochroite | Mn(OH)2 |
4.FE.05 | Theophrastite | Ni(OH)2 |
4.FE.10 | Bayerite | Al(OH)3 |
4.FE.10 | Doyleite | Al(OH)3 |
4.FE.10 | Gibbsite | Al(OH)3 |
4.FE.10 | Nordstrandite | Al(OH)3 |
4.FE.15 | Böhmite | AlO(OH) |
4.FE.15 | Lepidocrocite | γ-Fe3+O(OH) |
4.FE.20 | Grimaldiite | CrO(OH) |
4.FE.20 | Heterogenite | Co3+O(OH) |
4.FE.25 | Feitknechtite | Mn3+O(OH) |
4.FE.25 | Lithiophorite | (Al,Li)MnO2(OH)2 |
4.FE.35 | Ferrihydrite | Fe3+10O14(OH)2 |
4.FE.40 | Feroxyhyte | Fe3+O(OH) |
4.FE.40 | Vernadite | (Mn4+,Fe3+,Ca,Na)(O,OH)2 · nH2O |
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.
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References for Quenselite
Localities for Quenselite
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.
Australia | |
| Sorrell (n.d.) |
China | |
| Gorshkov et al. (2006) |
India | |
| Rasul (1965) |
Japan | |
| Nambu & Yoshida (1993) |
Mexico | |
| Calderon-Rodarte et al. (2017) |
Pacific Ocean | |
| Volokhina et al. (2020) +3 other references |
Sweden (TL) | |
| Zeitschrift für Kristallographie et al. (1971) +1 other reference |
Christopher O'Neill photo & collection ( old label) | |
UK | |
| Nicholson (1989) |
USA | |
| U.S. GEOLOGICAL SURVEY PROFESSIONAL ... +1 other reference |
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Långban Mine, Långban Ore District, Filipstad, Värmland County, Sweden