Mallardite Mineral Data (original) (raw)
General Mallardite Information
Mn++SO4•7(H2O)
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
Mn2+(SO4)•7(H2O)
Valid Species (Pre-IMA) 1879
Locky Boy mine, Butterfield Canyon, Salt Lake County, Utah, USA. Link to MinDat.org Location Data.
Name for Ernest Mallard (1833-1894), French crystallographer.
Zinc-fauserite - probably Zn-Mg-bearing mallardite
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Mallardite Crystallography
a:b:c =2.1769:1:1.7015
a = 14.15, b = 6.5, c = 11.06, Z = 4; beta = 105.6° V = 979.77 Den(Calc)= 1.88
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c
By Intensity(I/Io): 4.92(1), 5.49(0.7), 4.88(0.55),
Physical Properties of Mallardite
{001} Good
Colorless, White, Light pink.
1.846
Transparent
Massive - Fibrous - Distinctly fibrous fine-grained forms.
2 - Gypsum
Non-fluorescent.
Vitreous (Glassy)
Nonmagnetic
white
Optical Properties of Mallardite
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
Biaxial (+), a=1.462, b=1.465, g=1.474, bire=0.0120
Calculated Properties of Mallardite
Bulk Density (Electron Density)=1.91 gm/cc
note: Specific Gravity of Mallardite =1.85 gm/cc.
Fermion Index = 0.0011803621
Boson Index = 0.9988196379
PEMallardite = 5.59 barns/electron
U=PEMallardite x rElectron Density= 10.65 barns/cc.
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Mallardite is Not Radioactive
Mallardite Classification
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
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
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
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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Mallardite
Mn++SO4•7(H2O)
Dana No: 29.06.10.05 Strunz No: 07.CB.35
Locality:
Notes: