Dwornikite Mineral Data (original) (raw)

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

Click Here for Larger Dwornikite Image in a New Browser Window Images:

Click Here for Larger Dwornikite Image 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 - PrismaticH-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),

Click Here for Large Dwornikite Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

| | Wildner M , Giester G , Neues Jahrbuch fur Mineralogie, Monatshefte , 1991 (1991) p.296-306, The crystal structures of kieserite-type compounds., I. Crystal structures of Me(II)SO4*H2O (Me = Mn,Fe,Co,Ni,Zn), Locality: synthetic | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

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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Ask about Dwornikite here :
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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: