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Dwornikite Mineral Data

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General Dwornikite Information

Help on Chemical  Formula: Chemical Formula: (Ni,Fe++)SO4•(H2O)
Help on Composition: Composition: Molecular Weight = 172.06 gm
   Iron       8.11 %  Fe   10.44 % FeO
   Nickel    25.58 %  Ni   32.56 % NiO
   Hydrogen   1.17 %  H    10.47 % H2O
   Sulfur    18.64 %  S    46.53 % SO3
   Oxygen    46.49 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ni0.75Fe2+0.25(SO4)•(H2O)
Help on Environment: Environment: In a vanadium sulfide deposit, probably by oxidation of associated bravoite.
Help on IMA Status: IMA Status: Approved IMA 1981
Help on Locality: Locality: Minasragra, 46 km from Cerro de Pasco, Peru. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Edward J. Dwornik (1920- ), Lunar geologist and mineralogist, U.S. Geological Survey, Washington, D.C., USA,
Help on Name Pronunciation: Name Pronunciation: Dwornikite + Pronunciation Say DWORNIKITE
Help on Synonym: Synonym: ICSD 71347
  PDF 21-974
 

Dwornikite Image

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  Dwornikite

Comments: Green earthy, powdery dwornikite on or replacing millerite as acicular crystals in 1cm vug.
Location: Lipovka Ni deposit, Rezh District, Central Urals, Urals Region, Russia. Scale: Picture size 1.2 cm.
© Tom Loomis / Dakota Matrix

Dwornikite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.902:1:0.9857
Help on Cell Dimensions: Cell Dimensions: a = 6.839, b = 7.582, c = 7.474, Z = 4; beta = 117.85° V = 342.66 Den(Calc)= 3.33
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.342(1), 4.732(1), 3.024(0.7),
 

Physical Properties of Dwornikite

Help on Color: Color: White.
Help on Density: Density: 3.34
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Hardness: Hardness: 2-3 - Gypsum-Calcite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Dwornikite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.032 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.029 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1892,KPDmeas= 0.1886,KC= 0.1949
Ncalc = 1.65
Help on Optical Data: Optical Data: Biaxial (?), b=1.63
 

Calculated Properties of Dwornikite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.31 gm/cc
note: Specific Gravity of Dwornikite =3.33 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0062338396
Boson Index = 0.9937661604
Help on Photoelectric: Photoelectric: PEDwornikite = 13.53 barns/electron
U=PEDwornikite x rElectron Density= 44.79 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Dwornikite is Not Radioactive
 

Dwornikite Classification

Help on  Dana Class: Dana Class: 29.06.02.06 (29)Hydrated Acid and Sulfates
  (29.06)where A XO4 � x(H2O)
  (29.06.02)Kieserite Group (Mono-hydrates)
 
29.06.02.01 Kieserite MgSO4•(H2O) C 2/c 2/m
 
29.06.02.02 Szomolnokite FeSO4•(H2O) A2/a 2/m
 
29.06.02.03 Szmikite MnSO4•(H2O) A2/a 2/m
 
29.06.02.04 Poitevinite (Cu,Fe,Zn)SO4•(H2O) P1 1
 
29.06.02.05 Gunningite (Zn,Mn)SO4•(H2O) A2/a 2/m
 
29.06.02.06 Dwornikite (Ni,Fe)SO4•(H2O) C 2/c 2/m
 
29.06.02.07 Cobaltkieserite! CoSO4•H2O C 2/c 2/m
Help on  Strunz Class: Strunz Class: 07.CB.05 07 - SULFATES (SELENATES, TELLURATES)
  07.C - Sulfates (selenates, etc.) without Additional Anions, with H2O
  07.CB -With only medium-sized cations
 
07.CB.05 Gunningite (Zn,Mn)SO4•(H2O) A2/a 2/m
 
07.CB.05 Dwornikite (Ni,Fe)SO4•(H2O) C 2/c 2/m
 
07.CB.05 Kieserite MgSO4•(H2O) C 2/c 2/m
 
07.CB.05 Poitevinite (Cu,Fe,Zn)SO4•(H2O) P1 1
 
07.CB.05 Szomolnokite FeSO4•(H2O) A2/a 2/m
 
07.CB.05 Szmikite MnSO4•(H2O) A2/a 2/m
 
07.CB.05 Cobaltkieserite! CoSO4•H2O C 2/c 2/m
 

Other Dwornikite Information

Help on References: References: NAME( AntBidBlaNic5) 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 Dwornikite :
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
15 - WWW-MINCRYST

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

Dwornikite

(Ni,Fe++)SO4•(H2O)
Dana No: 29.06.02.06 Strunz No: 07.CB.05
Locality:

 

Notes:

 

 
   
 


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