Lawsonbauerite
A valid IMA mineral species
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About Lawsonbauerite
Formula:
(Mn2+,Mg)9Zn4(SO4)2(OH)22 · 8H2O
Colour:
colourless to white; grayish tan
Lustre:
Resinous, Greasy, Dull
Hardness:
4½
Specific Gravity:
2.87
Crystal System:
Monoclinic
Name:
Named in 1979 by Pete J. Dunn, Donald Ralph Peacor, and Bozidar Darko Sturman in honor of Lawson Henry Bauer [August 18, 1888 Mertztown, Pennsylvania, USA - January 29, 1954 Franklin, New Jersey, USA], former Head Chemist of the New Jersey Zinc Co. laboratory, Franklin, NJ, and specialist in Franklin minerals. He graduated Phi Beta Kappa from Lafayette College and was a Fellow in the Mineralogical Society of America. He served as a member of the Franklin Board of Education and President of the Franklin Board of Health. He co-authored 18 mineralogical papers including the description of 9 new species: cahnite, calcium larsenite (renamed esperite), ferroschallerite (renamed nelenite), larsenite, loseyite, manganpyrosmalite, mcgovernite, mooreite, and yeatmanite.
Unique Identifiers
Mindat ID:
2352
Long-form identifier:
mindat:1:1:2352:4
GUID
(UUID V4):
(UUID V4):
d27fd927-c919-4c5b-b217-c36faa6f8f1d
IMA Classification of Lawsonbauerite
Approved
IMA Formula:
Mn2+9Zn4(SO4)2(OH)22 · 8H2O
First published:
1979
Classification of Lawsonbauerite
7.DD.40
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
D : With only medium-sized cations; sheets of edge-sharing octahedra
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
D : With only medium-sized cations; sheets of edge-sharing octahedra
31.1.4.2
31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
1 : (AB)m(XO4)pZq·xH2O, where m:p > 6:1
31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
1 : (AB)m(XO4)pZq·xH2O, where m:p > 6:1
25.9.12
25 : Sulphates
9 : Sulphates of Mn
25 : Sulphates
9 : Sulphates of Mn
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 |
---|---|---|
Lwb | 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 Lawsonbauerite
Resinous, Greasy, Dull
Transparency:
Transparent, Translucent
Colour:
colourless to white; grayish tan
Streak:
White
Hardness:
4½ on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
2.87 g/cm3 (Measured) 2.92 g/cm3 (Calculated)
Optical Data of Lawsonbauerite
Type:
Biaxial (-)
RI values:
nα = 1.590 nβ = 1.608 nγ = 1.611
2V:
Measured: 42° , Calculated: 44°
Birefringence:
0.021
Max Birefringence:
δ = 0.021
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:
r > v strong
Optical Extinction:
Y || b; Z^c = 7°
Pleochroism:
Non-pleochroic
Chemistry of Lawsonbauerite
Mindat Formula:
(Mn2+,Mg)9Zn4(SO4)2(OH)22 · 8H2O
Crystallography of Lawsonbauerite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 10.54 Å, b = 9.62 Å, c = 16.46 Å
β = 95.21°
β = 95.21°
Ratio:
a:b:c = 1.096 : 1 : 1.711
Unit Cell V:
1,662.06 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Bladed to lath-like crystals
Crystal Structure
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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) |
---|---|---|---|---|---|---|---|
0000882 | Lawsonbauerite | Treiman A H, Peacor D R (1982) The crystal structure of lawsonbauerite, (Mn,Mg)9Zn4(SO4)2(OH)22.8H2O, and its relation to mooreite American Mineralogist 67 1029-1034 | 1982 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
10.5 Å | (100) |
8.2 Å | (10) |
6.24 Å | (30) |
5.24 Å | (60) |
4.77 Å | (20) |
4.61 Å | (20) |
4.19 Å | (10) |
3.90 Å | (50) |
3.77 Å | (20) |
Comments:
ICDD 33-873
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] |
Type Occurrence of Lawsonbauerite
Associated Minerals at Type Locality:
Reference:
Dunn, P.J., Peacor, D.R., Sturman, B.D. (1979) Lawsonbauerite, a new mineral from the Sterling Hill mine, New Jersey, and new data for torreyite. American Mineralogist: 64: 949-952.
Synonyms of Lawsonbauerite
Other Language Names for Lawsonbauerite
German:Lawsonbauerit
Spanish:Lawsonbauerita
Common Associates
Associated Minerals Based on Photo Data:
4 photos of Lawsonbauerite associated with Pyrochroite | Mn(OH)2 |
3 photos of Lawsonbauerite associated with Fluoborite | Mg3(BO3)(F,OH)3 |
1 photo of Lawsonbauerite associated with Mooreite | Mg9◻2Mn2Zn4(SO4)2(OH)26 · 8H2O |
Related Minerals - Strunz-mindat Grouping
7.DD. | Asagiite | NiCu4(SO4)2(OH)6 · 6H2O |
7.DD.05 | Felsőbányaite | Al4(SO4)(OH)10 · 4H2O |
7.DD.07 | Llantenesite | Cu6Al[SeO4](OH)12Cl · 3H2O |
7.DD.10 | Langite | Cu4(SO4)(OH)6 · 2H2O |
7.DD.10 | Posnjakite | Cu4(SO4)(OH)6 · H2O |
7.DD.10 | Wroewolfeite | Cu4(SO4)(OH)6 · 2H2O |
7.DD.10 | Gobelinite | CoCu4(SO4)2(OH)6 · 6H2O |
7.DD.10 | Fehrite | MgCu4(SO4)2(OH)6 · 6H2O |
7.DD.15 | Spangolite | Cu6Al(SO4)(OH)12Cl · 3H2O |
7.DD.15 | Kobyashevite | Cu5(SO4)2(OH)6 · 4H2O |
7.DD.15 | Unnamed (Dimorph of Devilline) | CaCu4(SO4)2(OH)6 · 3H2O |
7.DD.20 | Ktenasite | ZnCu4(SO4)2(OH)6 · 6H2O |
7.DD.25 | Christelite | Cu2Zn3(SO4)2(OH)6 · 4H2O |
7.DD.30 | Campigliaite | Mn2+Cu4(SO4)2(OH)6 · 4H2O |
7.DD.30 | Devilline | CaCu4(SO4)2(OH)6 · 3H2O |
7.DD.30 | Orthoserpierite | Ca(Cu,Zn)4(SO4)2(OH)6 · 3H2O |
7.DD.30 | Serpierite | Ca(Cu,Zn)4(SO4)2(OH)6 · 3H2O |
7.DD.30 | Niedermayrite | CdCu4(SO4)2(OH)6 · 4H2O |
7.DD.30 | Edwardsite | Cu3Cd2(SO4)2(OH)6 · 4H2O |
7.DD.35 | Carrboydite | (Ni1-xAlx)(SO4)x/2(OH)2 · nH2O |
7.DD.35 | Glaucocerinite | (Zn1-xAlx)(OH)2(SO4)x/2 · nH2O |
7.DD.35 | Honessite | (Ni1-xFe3+x)(OH)2[SO4]x/2 · nH2O |
7.DD.35 | Hydrohonessite | (Ni1-xFe3+x)(OH)2(SO4)x/2 · nH2O |
7.DD.35 | Motukoreaite | Mg6Al3(OH)18[Na(H2O)6][SO4]2 · 6H2O |
7.DD.35 | Mountkeithite | [(Mg1-xFe3+x)(OH)2][SO4]x/2 · nH2O |
7.DD.35 | Shigaite | Mn6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O |
7.DD.35 | Wermlandite | Mg7Al2(OH)18[Ca(H2O)6][SO4]2 · 6H2O |
7.DD.35 | Woodwardite | Cu1-xAlx(OH)2(SO4)x/2 · nH2O |
7.DD.35 | Zincaluminite | Zn6Al6(SO4)2(OH)16 · 5H2O |
7.DD.35 | Hydrowoodwardite | (Cu1-xAlx)(OH)2[SO4]x/2 · nH2O |
7.DD.35 | Zincowoodwardite | Zn1-xAlx(OH)2[SO4]x/2 · nH2O |
7.DD.35 | Natroglaucocerinite | Zn6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O |
7.DD.35 | Nikischerite | Fe2+6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O |
7.DD.40 | Isselite | Cu6(SO4)(OH)10 · 5H2O |
7.DD.40 | Torreyite | (Mg,Mn2+)7◻2Mn2+2Zn4(SO4)2(OH)22 · 8H2O |
7.DD.45 | Mooreite | Mg9◻2Mn2Zn4(SO4)2(OH)26 · 8H2O |
7.DD.45 | Hodgesmithite | (Cu,Zn)6Zn(SO4)2(OH)10 · 3H2O |
7.DD.47 | Lahnsteinite | Zn4(SO4)(OH)6 · 3H2O |
7.DD.50 | Namuwite | Zn4(SO4)(OH)6 · 4H2O |
7.DD.50 | Minohlite | (Cu,Zn)7(SO4)2(OH)10 · 8H2O |
7.DD.52 | Lauraniite | Cu6Cd2(SO4)2(OH)12 · 5H2O |
7.DD.55 | Bechererite | Zn7Cu(OH)13[(SiO(OH)3(SO4)] |
7.DD.60 | Ramsbeckite | (Cu,Zn)15(SO4)4(OH)22 · 6H2O |
7.DD.65 | Vonbezingite | Ca6Cu3(SO4)3(OH)12 · 2H2O |
7.DD.70 | Redgillite | Cu6(SO4)(OH)10 · H2O |
7.DD.75 | Chalcoalumite | CuAl4(SO4)(OH)12 · 3H2O |
7.DD.75 | Nickelalumite | NiAl4(SO4)(OH)12(H2O)3 |
7.DD.75 | Kyrgyzstanite | ZnAl4(SO4)(OH)12 · 3H2O |
7.DD.80 | Guarinoite | Zn6(SO4)(OH)10 · 5H2O |
7.DD.80 | Schulenbergite | (Cu,Zn)7(SO4)2(OH)10 · 3H2O |
7.DD.80 | Thérèsemagnanite | NaCo4(SO4)(OH)6Cl · 6H2O |
7.DD.80 | UM1992-30-SO:CCuHZn | (Zn,Cu)7(SO4,CO3)2(OH)10 · 3H2O |
7.DD.85 | Montetrisaite | Cu6(SO4)(OH)10 · 2H2O |
Fluorescence of Lawsonbauerite
Not fluorescent
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 Lawsonbauerite
mindat.org URL:
https://www.mindat.org/min-2352.html
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References for Lawsonbauerite
Reference List:
Dunn, Pete J., Peacor, Donald R., Sturman, B. Darko (1979) Lawsonbauerite, a new mineral from the Sterling Hill mine, New Jersey, and new data for torreyite. American Mineralogist, 64 (9-10) 949-952
Localities for Lawsonbauerite
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) | |
| Dunn et al. (1979) +1 other reference |
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Sterling Mine, Sterling Hill, Ogdensburg, Sussex County, New Jersey, USA