Mineralogy Database

Mallardite Mineral Data

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General Mallardite Information

Help on Chemical  Formula: Chemical Formula: Mn++SO4•7(H2O)
Help on Composition: Composition: Molecular Weight = 277.11 gm
   Manganese  19.83 %  Mn   25.60 % MnO
   Hydrogen    5.09 %  H    45.51 % H2O
   Sulfur     11.57 %  S    28.89 % SO3
   Oxygen     63.51 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+(SO4)•7(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1879
Help on Locality: Locality: Locky Boy mine, Butterfield Canyon, Salt Lake County, Utah, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Name for Ernest Mallard (1833-1894), French crystallographer.
Help on Name Pronunciation: Name Pronunciation: Mallardite + Pronunciation Say MALLARDITE
Help on Synonym: Synonym: Zinc-fauserite - probably Zn-Mg-bearing mallardite
 

Mallardite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.1769:1:1.7015
Help on Cell Dimensions: Cell Dimensions: a = 14.15, b = 6.5, c = 11.06, Z = 4; beta = 105.6° V = 979.77 Den(Calc)= 1.88
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.92(1), 5.49(0.7), 4.88(0.55),
 

Physical Properties of Mallardite

Help on Cleavage: Cleavage: {001} Good
Help on Color: Color: Colorless, White, Light pink.
Help on Density: Density: 1.846
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Massive - Fibrous - Distinctly fibrous fine-grained forms.
Help on Hardness: Hardness: 2 - Gypsum
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: white
 

Optical Properties of Mallardite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.013 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.031 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2484,KPDmeas= 0.253,KC= 0.2563
Ncalc = 1.47 - 1.48
Help on Optical Data: Optical Data: Biaxial (+), a=1.462, b=1.465, g=1.474, bire=0.0120
 

Calculated Properties of Mallardite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.91 gm/cc
note: Specific Gravity of Mallardite =1.85 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0011803621
Boson Index = 0.9988196379
Help on Photoelectric: Photoelectric: PEMallardite = 5.59 barns/electron
U=PEMallardite x rElectron Density= 10.65 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Mallardite is Not Radioactive
 

Mallardite Classification

Help on  Dana Class: Dana Class: 29.06.10.05 (29)Hydrated Acid and Sulfates
  (29.06)where A XO4 � x(H2O)
  (29.06.10)Melanterite Group (Heptahydrates, Monoclinic: P21/c)
 
29.06.10.01 Melanterite FeSO4•7(H2O) P 21/c 2/m
 
29.06.10.02 Boothite CuSO4•7(H2O) P 21/c 2/m
 
29.06.10.03 Zincmelanterite (Zn,Cu,Fe)SO4•7(H2O) P 21/c 2/m
 
29.06.10.04 Bieberite CoSO4•7(H2O) P 21/c 2/m
 
29.06.10.05 Mallardite MnSO4•7(H2O) P 21/c 2/m
 
29.06.10.06 Alpersite! (Mg,Cu)SO4•7H2O P 21/c 2/m
Help on  Strunz Class: Strunz Class: 07.CB.35 07 - SULFATES (SELENATES, TELLURATES)
  07.C - Sulfates (selenates, etc.) without Additional Anions, with H2O
  07.CB -With only medium-sized cations
 
07.CB.35 Bieberite CoSO4•7(H2O) P 21/c 2/m
 
07.CB.35 Boothite CuSO4•7(H2O) P 21/c 2/m
 
07.CB.35 Mallardite MnSO4•7(H2O) P 21/c 2/m
 
07.CB.35 Melanterite FeSO4•7(H2O) P 21/c 2/m
 
07.CB.35 Zincmelanterite (Zn,Cu,Fe)SO4•7(H2O) P 21/c 2/m
 
07.CB.35 Alpersite! (Mg,Cu)SO4•7H2O P 21/c 2/m
 

Other Mallardite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Mallardite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Print or Cut-and-Paste your Mallardite Specimen Label here :

Mallardite

Mn++SO4•7(H2O)
Dana No: 29.06.10.05 Strunz No: 07.CB.35
Locality:

 

Notes:

 

 
   
 


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