Dwornikite
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About Dwornikite
Formula:
(Ni,Fe)SO4 · H2O
Colour:
White, faint greenish tint (perhaps from impurities)
Hardness:
2 - 3
Specific Gravity:
3.34 (Calculated)
Crystal System:
Monoclinic
Member of:
Name:
Named in 1982 by Charles Milton, Howard T. Evans, Jr., and Robert G. Johnson in honor of Edward J. Dwornik [March 23, 1920 USA - August 7, 2004 Lewes, Delaware, USA], analytical chemist and mineralogist for the United States Geological Survey.
This page provides mineralogical data about Dwornikite.
Classification of Dwornikite
Approved
Approval year:
1981
First published:
1982
6/C.01-40
7.CB.05
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
B : With only medium-sized cations
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
B : With only medium-sized cations
29.6.2.6
29 : HYDRATED ACID AND NORMAL SULFATES
6 : AXO4·xH2O
29 : HYDRATED ACID AND NORMAL SULFATES
6 : AXO4·xH2O
25.12.10
25 : Sulphates
12 : Sulphates of Co and Ni
25 : Sulphates
12 : Sulphates of Co and Ni
Physical Properties of Dwornikite
Colour:
White, faint greenish tint (perhaps from impurities)
Streak:
White
Hardness:
2 - 3 on Mohs scale
Density:
3.34 g/cm3 (Calculated)
Optical Data of Dwornikite
Type:
Biaxial
Dispersion:
r > v
Chemical Properties of Dwornikite
Formula:
(Ni,Fe)SO4 · H2O
IMA Formula:
Ni(SO4) · H2O
Crystallography of Dwornikite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Cell Parameters:
a = 6.83 Å, b = 7.58 Å, c = 7.47 Å
β = 117.85°
β = 117.85°
Ratio:
a:b:c = 0.901 : 1 : 0.985
Unit Cell V:
341.94 ų (Calculated from Unit Cell)
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0014854 | Dwornikite | Wildner M, Giester G (1991) The crystal structures of kieserite-type compounds. I. Crystal structures of Me(II)SO4*H2O (Me = Mn,Fe,Co,Ni,Zn) Neues Jahrbuch fur Mineralogie, Monatshefte 1991 296-306 | 1991 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.342 Å | (100) |
4.732 Å | (70) |
3.024 Å | (70) |
4.754 Å | (50) |
3.293 Å | (35) |
2.491 Å | (35) |
Type Occurrence of Dwornikite
General Appearance of Type Material:
White aggregates of very fine-grained particles mixed with other minerals
Place of Conservation of Type Material:
George Washington University, Washington, DC
Associated Minerals at Type Locality:
Reference:
Milton, C., Evans, H.T., Johnson, R.G. (1982) Dwornikite, (Ni,Fe)SO4·H2O, a member of the kieserite group from Minasragra, Peru. Mineralogical Magazine: 46: 351-355.
Synonyms of Dwornikite
Other Language Names for Dwornikite
Relationship of Dwornikite to other Species
Member of:
Other Members of this group:
Cobaltkieserite | CoSO4 · H2O | Mon. 2/m : B2/b |
Gunningite | ZnSO4 · H2O | Mon. 2/m : B2/b |
Kieserite | MgSO4 · H2O | Mon. 2/m |
Serrabrancaite | MnPO4 · H2O | Mon. 2/m : B2/b |
Szmikite | MnSO4 · H2O | Mon. |
Szomolnokite | FeSO4 · H2O | Mon. 2/m : B2/b |
Related Minerals - Nickel-Strunz Grouping
7.CB.05 | Gunningite | ZnSO4 · H2O | Mon. 2/m : B2/b |
7.CB.05 | Kieserite | MgSO4 · H2O | Mon. 2/m |
7.CB.05 | Poitevinite | (Cu,Fe)SO4 · H2O | Tric. |
7.CB.05 | Szmikite | MnSO4 · H2O | Mon. |
7.CB.05 | Szomolnokite | FeSO4 · H2O | Mon. 2/m : B2/b |
7.CB.05 | Cobaltkieserite | CoSO4 · H2O | Mon. 2/m : B2/b |
7.CB.07 | Sanderite | MgSO4 · 2H2O | Orth. 2 2 2 : P21 21 21 |
7.CB.10 | Bonattite | CuSO4 · 3H2O | Mon. |
7.CB.15 | Aplowite | (Co,Mn,Ni)SO4 · 4H2O | Mon. 2/m |
7.CB.15 | Boyleite | (Zn,Mg)SO4 · 4H2O | Mon. 2/m : P21/b |
7.CB.15 | Ilesite | (Mn,Zn,Fe)SO4 · 4H2O | Mon. 2/m |
7.CB.15 | Rozenite | FeSO4 · 4H2O | Mon. 2/m : P21/b |
7.CB.15 | Starkeyite | MgSO4 · 4H2O | Mon. 2/m : P21/b |
7.CB.15 | Drobecite | CdSO4 · 4H2O | Mon. 2/m : P21/m |
7.CB.15 | Cranswickite | MgSO4 · 4H2O | Mon. m : Bb |
7.CB.20 | Chalcanthite | CuSO4 · 5H2O | Tric. 1 : P1 |
7.CB.20 | Jôkokuite | MnSO4 · 5H2O | Tric. |
7.CB.20 | Pentahydrite | MgSO4 · 5H2O | Tric. |
7.CB.20 | Siderotil | FeSO4 · 5H2O | Tric. |
7.CB.25 | Bianchite | (Zn,Fe)SO4 · 6H2O | Mon. 2/m : P2/m |
7.CB.25 | Chvaleticeite | (Mn,Mg)SO4 · 6H2O | Mon. 2/m : B2/b |
7.CB.25 | Ferrohexahydrite | FeSO4 · 6H2O | Mon. 2/m : B2/b |
7.CB.25 | Hexahydrite | MgSO4 · 6H2O | Mon. 2/m : P2/m |
7.CB.25 | Moorhouseite | (Co,Ni,Mn)SO4 · 6H2O | Mon. |
7.CB.25 | Nickelhexahydrite | (Ni,Mg,Fe)SO4 · 6H2O | Mon. |
7.CB.30 | Retgersite | NiSO4 · 6H2O | Tet. 4 2 2 : P41 21 2 |
7.CB.35 | Bieberite | CoSO4 · 7H2O | Mon. 2/m : P2/m |
7.CB.35 | Boothite | CuSO4 · 7H2O | Mon. |
7.CB.35 | Mallardite | MnSO4 · 7H2O | Mon. 2/m : P2/m |
7.CB.35 | Melanterite | Fe2+(H2O)6SO4 · H2O | Mon. 2/m : P21/b |
7.CB.35 | Zincmelanterite | (Zn,Cu,Fe)SO4 · 7H2O | Mon. |
7.CB.35 | Alpersite | (Mg,Cu)(SO4) · 7H2O | Mon. 2/m : P21/b |
7.CB.40 | Epsomite | MgSO4 · 7H2O | Orth. 2 2 2 : P21 21 21 |
7.CB.40 | Goslarite | ZnSO4 · 7H2O | Orth. 2 2 2 : P21 21 21 |
7.CB.40 | Morenosite | NiSO4 · 7H2O | Orth. 2 2 2 : P21 21 21 |
7.CB.45 | Alunogen | Al2(SO4)3 · 17H2O | Tric. 1 |
7.CB.45 | Meta-alunogen | Al2(SO4)3 · 12H2O | |
7.CB.50 | Aluminocoquimbite | Al2Fe2(SO4)6(H2O)12 · 6H2O | Trig. 3m (3 2/m) : P3 1c |
7.CB.55 | Coquimbite | AlFe3(SO4)6(H2O)12 · 6H2O | Trig. 3m (3 2/m) : P3 1c |
7.CB.55 | Paracoquimbite | Fe4(SO4)6(H2O)12 · 6H2O | Trig. 3 : R3 |
7.CB.55 | Rhomboclase | (H5O2)Fe3+(SO4)2 · 2H2O | Orth. mmm (2/m 2/m 2/m) : Pnma |
7.CB.60 | Kornelite | Fe2(SO4)3 · 7H2O | Mon. 2/m : P21/m |
7.CB.65 | Quenstedtite | Fe2(SO4)3 · 11H2O | Tric. 1 : P1 |
7.CB.70 | Lausenite | Fe2(SO4)3 · 5H2O | Mon. 2/m : P21/m |
7.CB.75 | Lishizhenite | ZnFe2(SO4)4 · 14H2O | Tric. 1 : P1 |
7.CB.75 | Römerite | Fe2+Fe3+2(SO4)4 · 14H2O | Tric. 1 : P1 |
7.CB.80 | Ransomite | CuFe2(SO4)4 · 6H2O | Mon. 2/m : P21/b |
7.CB.85 | Apjohnite | Mn2+Al2(SO4)4 · 22H2O | Mon. |
7.CB.85 | Bílinite | Fe2+Fe3+2(SO4)4 · 22H2O | Mon. 2/m : P21/b |
7.CB.85 | Dietrichite | (Zn,Fe2+,Mn2+)Al2(SO4)4 · 22H2O | Mon. 2/m : P21/b |
7.CB.85 | Halotrichite | FeAl2(SO4)4 · 22H2O | Mon. 2 : P2 |
7.CB.85 | Pickeringite | MgAl2(SO4)4 · 22H2O | Mon. 2/m : P21/b |
7.CB.85 | Redingtonite | (Fe2+,Mg,Ni)(Cr,Al)2(SO4)4 · 22H2O | Mon. |
7.CB.85 | Wupatkiite | (Co,Mg,Ni)Al2(SO4)4 · 22H2O | Mon. |
7.CB.90 | Meridianiite | MgSO4 · 11H2O | Tric. 1 : P1 |
Related Minerals - Dana Grouping (8th Ed.)
29.6.2.1 | Kieserite | MgSO4 · H2O | Mon. 2/m |
29.6.2.2 | Szomolnokite | FeSO4 · H2O | Mon. 2/m : B2/b |
29.6.2.3 | Szmikite | MnSO4 · H2O | Mon. |
29.6.2.4 | Poitevinite | (Cu,Fe)SO4 · H2O | Tric. |
29.6.2.5 | Gunningite | ZnSO4 · H2O | Mon. 2/m : B2/b |
Related Minerals - Hey's Chemical Index of Minerals Grouping
25.12.1 | Bieberite | CoSO4 · 7H2O | Mon. 2/m : P2/m |
25.12.2 | Cobaltzippeite | Co(UO2)2(SO4)O2 · 3.5H2O | Mon. 2/m : B2/m |
25.12.3 | Aplowite | (Co,Mn,Ni)SO4 · 4H2O | Mon. 2/m |
25.12.4 | Moorhouseite | (Co,Ni,Mn)SO4 · 6H2O | Mon. |
25.12.5 | Retgersite | NiSO4 · 6H2O | Tet. 4 2 2 : P41 21 2 |
25.12.6 | Morenosite | NiSO4 · 7H2O | Orth. 2 2 2 : P21 21 21 |
25.12.7 | Nickelblödite | Na2(Ni,Mg)(SO4)2 · 4H2O | Mon. 2/m : P21/b |
25.12.8 | Nickelboussingaultite | (NH4)2Ni(SO4)2 · 6H2O | Mon. 2/m : P21/b |
25.12.9 | Nickelzippeite | Ni2(UO2)6(SO4)3(OH)10 · 16H2O | Mon. |
25.12.11 | Honessite | (Ni1-xFe3+x)(OH)2[SO4]x/2 · nH2O | Trig. |
25.12.12 | Hydrohonessite | (Ni1-xFe3+x)(OH)2(SO4)x/2 · nH2O | Hex. |
25.12.13 | Nickelhexahydrite | (Ni,Mg,Fe)SO4 · 6H2O | Mon. |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
References for Dwornikite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Milton, C., Evans, H.T., Johnson, R.G. (1982) Dwornikite, (Ni,Fe)SO4·H2O, a member of the kieserite group from Minasragra, Peru. Mineralogical Magazine: 46: 351-355.
Dunn, P.J., Fleischer, M. (1983) New mineral names. American Mineralogist: 68: 642-645.
Wildner, M., Giester, G. (1991) The crystal structures of kieserite-type compounds. I. Crystal structures of Me(II)SO4·H2O (Me=Mn,Fe,Co,Ni,Zn). Neues Jahrbuch für Mineralogie, Monatshefte: 1991: 296-306.
Internet Links for Dwornikite
mindat.org URL:
https://www.mindat.org/min-1336.html
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Localities for Dwornikite
Locality List




All localities listed without proper references should be considered as questionable.
Peru (TL) | |
| Milton, C., Evans, H.T., Johnson, R.G. (1982) Dwornikite, (Ni,Fe)SO4·H2O, a member of the kieserite group from Minasragra, Peru. Mineralogical Magazine: 46: 351-355. |
Portugal | |
| Marques de Sá, J. & Leal Gomes, C. (2010): Les mines de cuivre et nickel de Palhal et Telhadela, Albergaria-a-Velha, Aveiro, Portugal. Le Règne Minéral, 92, 36-47. |
Russia | |
| RRUFF specimen ID: R070379 |
Lipovka Mine, Lipovsk pegmatite field, Rezhevsky District, Sverdlovsk Oblast, Russia