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Lawsonbauerite

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Formula:
(Mn
2+
 
,Mg)
 
9
Zn
 
4
(SO
 
4
)
 
2
(OH)
 
22
· 8H
 
2
O
System:MonoclinicColour:colourless to white; ...
Hardness:
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.
Isostructural with:Shigaite, Torreyite


The manganese analogue of Torreyite.

Classification of Lawsonbauerite

IMA status:Approved
Strunz 8th edition ID:6/D.04-30
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:31.1.4.2

31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
1 : (AB)m(XO4)pZq·xH2O, where m:p > 6:1
Hey's CIM Ref.:25.9.12

25 : Sulphates
9 : Sulphates of Mn
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Type Occurrence of Lawsonbauerite

Type Locality:Sterling Mine, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA
Year of Discovery:1979
Associated Minerals at type locality:
ZinciteSussexitePyrochroiteFrankliniteCalcite

Physical Properties of Lawsonbauerite

Lustre:Resinous, Greasy, Dull
Diaphaneity (Transparency):Transparent, Translucent
Colour:colourless to white; grayish tan
Streak:White
Hardness (Mohs):
Tenacity:Brittle
Cleavage:None Observed
Fracture:Irregular/Uneven
Density (measured):2.87 g/cm3
Density (calculated):2.92 g/cm3

Crystallography of Lawsonbauerite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/b
Space Group Setting:P21/c
Cell Parameters:a = 10.54Å, b = 9.62Å, c = 16.46Å
β = 95.21°
Ratio:a:b:c = 1.096 : 1 : 1.711
Unit Cell Volume:V 1,662.06 ų (Calculated from Unit Cell)
Z:2
Morphology:Bladed to lath-like crystals
X-Ray Powder Diffraction:
d-spacingIntensity
10.5 (100)
8.2 (10)
6.24 (30)
5.24 (60)
4.77 (20)
4.61 (20)
4.19 (10)
3.90 (50)
3.77 (20)
Comments:ICDD 33-873

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
Maximum Birefringence:δ = 0.021

Chart shows birefringence interference colour range (at 30µm thickness) 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

Chemical Properties of Lawsonbauerite

Formula:
(Mn
2+
 
,Mg)
 
9
Zn
 
4
(SO
 
4
)
 
2
(OH)
 
22
· 8H
 
2
O
Simplified for copy/paste:(Mn2+,Mg)9Zn4(SO4)2(OH)22·8H2O
Essential elements:H, Mn, O, S, Zn
All elements listed in formula:H, Mg, Mn, O, S, Zn

Relationship of Lawsonbauerite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
7.DD.05Felsőbányaite
Al
 
4
(SO
 
4
)(OH)
 
10
· 4H
 
2
O
7.DD.10Langite
Cu
 
4
(SO
 
4
)(OH)
 
6
· 2H
 
2
O
7.DD.10Posnjakite
Cu
 
4
(SO
 
4
)(OH)
 
6
· H
 
2
O
7.DD.10Wroewolfeite
Cu
 
4
(SO
 
4
)(OH)
 
6
· 2H
 
2
O
7.DD.15Spangolite
Cu
 
6
Al(SO
 
4
)(OH)
 
12
Cl · 3H
 
2
O
7.DD.20Ktenasite
Zn(Cu,Zn)
 
4
(SO
 
4
)
 
2
(OH)
 
6
· 6H
 
2
O
7.DD.25Christelite
Cu
 
2
Zn
 
3
(SO
 
4
)
 
2
(OH)
 
6
· 4H
 
2
O
7.DD.30Campigliaite
Mn
2+
 
Cu
 
4
(SO
 
4
)
 
2
(OH)
 
6
· 4H
 
2
O
7.DD.30Devilline
CaCu
 
4
(SO
 
4
)
 
2
(OH)
 
6
· 3H
 
2
O
7.DD.30Orthoserpierite
Ca(Cu,Zn)
 
4
(SO
 
4
)
 
2
(OH)
 
6
· 3H
 
2
O
7.DD.30Serpierite
Ca(Cu,Zn)
 
4
(SO
 
4
)
 
2
(OH)
 
6
· 3H
 
2
O
7.DD.30Niedermayrite
CdCu
 
4
(SO
 
4
)
 
2
(OH)
 
6
· 4H
 
2
O
7.DD.30Edwardsite
Cu
 
3
Cd
 
2
(SO
 
4
)
 
2
(OH)
 
6
·4H
 
2
O
7.DD.35Carrboydite
[(Ni
 
1-x
Al
 
x
)(OH)
 
2
][SO
 
4
]
 
x/2
· nH
 
2
O
7.DD.35Glaucocerinite
(Zn
 
1-x
Al
 
x
)(OH)
 
2
(SO
 
4
)
 
x/2
· nH
 
2
O
7.DD.35Honessite
(Ni
 
1-x
Fe
3+
x
)(OH)
 
2
[SO
 
4
]
 
x/2
· nH
 
2
O
7.DD.35Hydrohonessite
(Ni
 
1-x
Fe
3+
x
)(OH)
 
2
[SO
 
4
]
 
x/2
· nH
 
2
O
7.DD.35Motukoreaite
Mg
 
6
Al
 
3
(OH)
 
18
[Na(H
 
2
O)
 
6
][SO
 
4
]
 
2
· 6H
 
2
O
7.DD.35Mountkeithite
[(Mg
 
1-x
Fe
3+
x
)(OH)
 
2
][SO
 
4
]
 
x/2
· nH
 
2
O
7.DD.35Shigaite
Mn
 
6
Al
 
3
(OH)
 
18
[Na(H
 
2
O)
 
6
][SO
 
4
]
 
2
· 6H
 
2
O
7.DD.35Wermlandite
Mg
 
7
Al
 
2
(OH)
 
18
[Ca(H
 
2
O)
 
6
][SO
 
4
]
 
2
· 6H
 
2
O
7.DD.35Woodwardite
Cu
 
1-x
Al
 
x
(OH)
 
2
[SO
 
4
]
 
x/2
· nH
 
2
O
7.DD.35Zincaluminite
Zn
 
6
Al
 
6
(SO
 
4
)
 
2
(OH)
 
16
· 5H
 
2
O
7.DD.35Hydrowoodwardite
(Cu
 
1-x
Al
 
x
)(OH)
 
2
[SO
 
4
]
 
x/2
· nH
 
2
O
7.DD.35Zincowoodwardite
Zn
 
1-x
Al
 
x
(OH)
 
2
[SO
 
4
]
 
x/2
· nH
 
2
O
7.DD.35Natroglaucocerinite
Na
 
x
Zn
 
8-y
Al
 
y
(SO
 
4
)
 
(x+y)/2
(OH)
 
16
· 6H
 
2
O
7.DD.35Nikischerite
Fe
2+
6
Al
 
3
(OH)
 
18
[Na(H
 
2
O)
 
6
][SO
 
4
]
 
2
· 6H
 
2
O
7.DD.40Torreyite
(Mg,Mn
2+
 
)
 
7
 
2
Mn
2+
2
Zn
 
4
(SO
 
4
)
 
2
(OH)
 
22
· 8H
 
2
O
7.DD.45Mooreite
Mg
 
9
 
2
Mn
 
2
Zn
 
4
(SO
 
4
)
 
2
(OH)
 
26
· 8H
 
2
O
7.DD.50Namuwite
(Zn,Cu)
 
4
(SO
 
4
)(OH)
 
6
· 4H
 
2
O
7.DD.55Bechererite
(Zn,Cu)
 
6
Zn
 
2
(SO
 
4
,HSiO
 
4
)
 
2
(OH)
 
12
7.DD.60Ramsbeckite
(Cu,Zn)
 
15
(SO
 
4
)
 
4
(OH)
 
22
· 6H
 
2
O
7.DD.65Vonbezingite
Ca
 
6
Cu
 
3
(SO
 
4
)
 
3
(OH)
 
12
· 2H
 
2
O
7.DD.70Redgillite
Cu
 
6
(SO
 
4
)(OH)
 
10
· H
 
2
O
7.DD.75Chalcoalumite
CuAl
 
4
(SO
 
4
)(OH)
 
12
· 3H
 
2
O
7.DD.75Nickelalumite
(Ni,Cu)Al
 
4
(SO
 
4
,(NO
 
3
)
 
2
)(OH)
 
12
· 3H
 
2
O
7.DD.75Kyrgyzstanite
ZnAl
 
4
(SO
 
4
)(OH)
 
12
·3H
 
2
O
7.DD.80Guarinoite
(Zn,Co,Ni)
 
6
(SO
 
4
)(OH,Cl)
 
10
· 5H
 
2
O
7.DD.80Schulenbergite
(Cu,Zn)
 
7
(SO
 
4
,CO
 
3
)
 
2
(OH)
 
10
· 3H
 
2
O
7.DD.80Thérèsemagnanite
(Co,Zn,Ni)
 
6
(SO
 
4
)(OH,Cl)
 
10
· 8H
 
2
O
7.DD.80UM1992-30-SO:CCuHZn
(Zn,Cu)
 
7
(SO
 
4
,CO
 
3
)
 
2
(OH)
 
10
· 3H
 
2
O
7.DD.85Montetrisaite
Cu
 
6
(SO
 
4
)(OH)
 
10
· 2H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
25.9.1Szmikite
MnSO
 
4
· H
 
2
O
25.9.2Jôkokuite
MnSO
 
4
· 5H
 
2
O
25.9.3Mallardite
MnSO
 
4
· 7H
 
2
O
25.9.4Manganolangbeinite
K
 
2
Mn
 
2
(SO
 
4
)
 
3
25.9.5Chvaleticeite
(Mn,Mg)SO
 
4
· 6H
 
2
O
25.9.6Despujolsite
Ca
 
3
Mn
4+
 
(SO
 
4
)
 
2
(OH)
 
6
· 3H
 
2
O
25.9.7Apjohnite
Mn
2+
 
Al
 
2
(SO
 
4
)
 
4
· 22H
 
2
O
25.9.8Shigaite
Mn
 
6
Al
 
3
(OH)
 
18
[Na(H
 
2
O)
 
6
][SO
 
4
]
 
2
· 6H
 
2
O
25.9.9Ilesite
(Mn,Zn,Fe)SO
 
4
· 4H
 
2
O
25.9.10Mooreite
Mg
 
9
 
2
Mn
 
2
Zn
 
4
(SO
 
4
)
 
2
(OH)
 
26
· 8H
 
2
O
25.9.11Torreyite
(Mg,Mn
2+
 
)
 
7
 
2
Mn
2+
2
Zn
 
4
(SO
 
4
)
 
2
(OH)
 
22
· 8H
 
2
O
25.9.13Dietrichite
(Zn,Fe
2+
 
,Mn
2+
 
)Al
 
2
(SO
 
4
)
 
4
· 22H
 
2
O

Other Names for Lawsonbauerite

Synonyms:
IMA1979-004
Other Languages:
German:Lawsonbauerit
Spanish:Lawsonbauerita

Other Information

Fluorescence in UV light:Not fluorescent
Special Storage/
Display Requirements from:
Sterling Mine,..., Sussex Co., New Jersey, USANone.
Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Lawsonbauerite

Reference List:

- +
American Mineralogist (1982): 67: 1029-1034.

Internet Links for Lawsonbauerite

Search Engines:
  • Look for Lawsonbauerite on Google
  • Look for Lawsonbauerite images on Google
  • External Links:
  • Look for Lawsonbauerite on Webmineral
  • Look for Lawsonbauerite on Athena Mineralogy
  • Look for Lawsonbauerite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Lawsonbauerite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
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  • Wilensky Fine Minerals
  • Rare and Unusual minerals at Mineralogical Research Company
  • Top quality minerals from Kristalle of California
  • The Arkenstone - Fine Minerals
  • Lawsonbauerite specimens for sale - minfind.com
  • SpiriferMinerals.com - high quality low prices
  • Buy from Dave Bunk Minerals
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Find Lawsonbauerite on www.crystalclassics.co.uk
  • Localities for Lawsonbauerite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    USA
     
    • New Jersey
      • Sussex Co.
        • Franklin Mining District
          • Ogdensburg
            • Sterling Hill
    Dunn, P.J., et al: Am.Min.:64:949-952 (1979); Dunn(1995):Pt5:635-636.
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