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Dwornikite

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Formula:
(Ni,Fe)SO
 
4
· H
 
2
O
System:MonoclinicColour:White
Hardness:2 - 3
Member of:Kieserite Group
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 Gelogical Survey.
This page provides mineralogical data about Dwornikite.

Classification of Dwornikite

IMA status:Approved 1981
Strunz 8th edition ID:6/C.01-40
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:29.6.2.6

29 : HYDRATED ACID AND NORMAL SULFATES
6 : AXO4·xH2O
Hey's CIM Ref.:25.12.10

25 : Sulphates
12 : Sulphates of Co and Ni
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Type Occurrence of Dwornikite

Type Locality:Ragra Mine (Minasragra), Huayllay District, Pasco Province, Pasco Department, Peru
Year of Discovery:1981

Physical Properties of Dwornikite

Colour:White
Streak:White
Hardness (Mohs):2 - 3

Crystallography of Dwornikite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:B2/b
Cell Parameters:a = 6.83Å, b = 7.58Å, c = 7.47Å
β = 117.85°
Ratio:a:b:c = 0.901 : 1 : 0.985
Unit Cell Volume:V 341.94 ų (Calculated from Unit Cell)

Optical Data of Dwornikite

Type:Biaxial
Dispersion:r > v

Chemical Properties of Dwornikite

Formula:
(Ni,Fe)SO
 
4
· H
 
2
O
Simplified for copy/paste:(Ni,Fe)SO4·H2O
Essential elements:H, Ni, O, S
All elements listed in formula:Fe, H, Ni, O, S

Relationship of Dwornikite to other Species

Member of:Kieserite Group
Other Members of Group:

- +
Cobaltkieserite
CoSO
 
4
· H
 
2
O
Gunningite
ZnSO
 
4
· H
 
2
O
Kieserite
MgSO
 
4
· H
 
2
O
Szmikite
MnSO
 
4
· H
 
2
O
Szomolnokite
FeSO
 
4
· H
 
2
O
Related Minerals - Nickel-Strunz Grouping):

- +
7.CB.05Gunningite
ZnSO
 
4
· H
 
2
O
7.CB.05Kieserite
MgSO
 
4
· H
 
2
O
7.CB.05Poitevinite
(Cu,Fe,Zn)SO
 
4
· H
 
2
O
7.CB.05Szmikite
MnSO
 
4
· H
 
2
O
7.CB.05Szomolnokite
FeSO
 
4
· H
 
2
O
7.CB.05Cobaltkieserite
CoSO
 
4
· H
 
2
O
7.CB.07Sanderite
MgSO
 
4
· 2H
 
2
O
7.CB.10Bonattite
CuSO
 
4
· 3H
 
2
O
7.CB.15Aplowite
(Co,Mn,Ni)SO
 
4
· 4H
 
2
O
7.CB.15Boyleite
(Zn,Mg)SO
 
4
· 4H
 
2
O
7.CB.15Ilesite
(Mn,Zn,Fe)SO
 
4
· 4H
 
2
O
7.CB.15Rozenite
FeSO
 
4
· 4H
 
2
O
7.CB.15Starkeyite
MgSO
 
4
· 4H
 
2
O
7.CB.15Drobecite
CdSO
 
4
· 4H
 
2
O
7.CB.15Cranswickite
MgSO
 
4
· 4H
 
2
O
7.CB.20Chalcanthite
CuSO
 
4
· 5H
 
2
O
7.CB.20Jôkokuite
MnSO
 
4
· 5H
 
2
O
7.CB.20Pentahydrite
MgSO
 
4
· 5H
 
2
O
7.CB.20Siderotil
FeSO
 
4
· 5H
 
2
O
7.CB.25Bianchite
(Zn,Fe)SO
 
4
· 6H
 
2
O
7.CB.25Chvaleticeite
(Mn,Mg)SO
 
4
· 6H
 
2
O
7.CB.25Ferrohexahydrite
FeSO
 
4
· 6H
 
2
O
7.CB.25Hexahydrite
MgSO
 
4
· 6H
 
2
O
7.CB.25Moorhouseite
(Co,Ni,Mn)SO
 
4
· 6H
 
2
O
7.CB.25Nickelhexahydrite
(Ni,Mg,Fe)SO
 
4
· 6H
 
2
O
7.CB.30Retgersite
NiSO
 
4
· 6H
 
2
O
7.CB.35Bieberite
CoSO
 
4
· 7H
 
2
O
7.CB.35Boothite
CuSO
 
4
· 7H
 
2
O
7.CB.35Mallardite
MnSO
 
4
· 7H
 
2
O
7.CB.35Melanterite
FeSO
 
4
· 7H
 
2
O
7.CB.35Zincmelanterite
(Zn,Cu,Fe)SO
 
4
· 7H
 
2
O
7.CB.35Alpersite
(Mg,Cu)[SO
 
4
] · 7H
 
2
O
7.CB.40Epsomite
MgSO
 
4
· 7H
 
2
O
7.CB.40Goslarite
ZnSO
 
4
· 7H
 
2
O
7.CB.40Morenosite
NiSO
 
4
· 7H
 
2
O
7.CB.45Alunogen
Al
 
2
(SO
 
4
)
 
3
· 17H
 
2
O
7.CB.45Meta-alunogen
Al
 
2
(SO
 
4
)
 
3
· 12H
 
2
O
7.CB.50Aluminocoquimbite
FeAl(SO
 
4
)
 
3
· 9H
 
2
O
7.CB.55Coquimbite
Fe
 
2-x
Al
 
x
(SO
 
4
)
 
3
· 9H
 
2
O, x ~0.5
7.CB.55Paracoquimbite
Fe
 
2
(SO
 
4
)
 
3
· 9H
 
2
O
7.CB.55Rhomboclase
(H
 
5
O
 
2
)Fe
3+
 
(SO
 
4
)
 
2
· 2H
 
2
O
7.CB.60Kornelite
Fe
 
2
(SO
 
4
)
 
3
· 7H
 
2
O
7.CB.65Quenstedtite
Fe
 
2
(SO
 
4
)
 
3
· 10H
 
2
O
7.CB.70Lausenite
Fe
 
2
(SO
 
4
)
 
3
·6H
 
2
O
7.CB.75Lishizhenite
ZnFe
 
2
(SO
 
4
)
 
4
· 14H
 
2
O
7.CB.75Römerite
Fe
2+
 
Fe
3+
2
(SO
 
4
)
 
4
· 14H
 
2
O
7.CB.80Ransomite
CuFe
 
2
(SO
 
4
)
 
4
· 6H
 
2
O
7.CB.85Apjohnite
Mn
2+
 
Al
 
2
(SO
 
4
)
 
4
· 22H
 
2
O
7.CB.85Bílinite
Fe
2+
 
Fe
3+
2
(SO
 
4
)
 
4
· 22H
 
2
O
7.CB.85Dietrichite
(Zn,Fe
2+
 
,Mn
2+
 
)Al
 
2
(SO
 
4
)
 
4
· 22H
 
2
O
7.CB.85Halotrichite
FeAl
 
2
(SO
 
4
)
 
4
· 22H
 
2
O
7.CB.85Pickeringite
MgAl
 
2
(SO
 
4
)
 
4
· 22H
 
2
O
7.CB.85Redingtonite
(Fe
2+
 
,Mg,Ni)(Cr,Al)
 
2
(SO
 
4
)
 
4
·22H
 
2
O
7.CB.85Wupatkiite
(Co,Mg,Ni)Al
 
2
(SO
 
4
)
 
4
·22H
 
2
O
7.CB.90Meridianiite
MgSO
 
4
· 11H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
25.12.1Bieberite
CoSO
 
4
· 7H
 
2
O
25.12.2Cobaltzippeite
Co(UO
 
2
)
 
2
(SO
 
4
)O
 
2
· 3.5H
 
2
O
25.12.3Aplowite
(Co,Mn,Ni)SO
 
4
· 4H
 
2
O
25.12.4Moorhouseite
(Co,Ni,Mn)SO
 
4
· 6H
 
2
O
25.12.5Retgersite
NiSO
 
4
· 6H
 
2
O
25.12.6Morenosite
NiSO
 
4
· 7H
 
2
O
25.12.7Nickelblödite
Na
 
2
(Ni,Mg)(SO
 
4
)
 
2
· 4H
 
2
O
25.12.8Nickelboussingaultite
(NH
 
4
)
 
2
Ni(SO
 
4
)
 
2
· 6H
 
2
O
25.12.9Nickelzippeite
Ni(UO
 
2
)
 
2
(SO
 
4
)O
 
2
· 3.5H
 
2
O (?)
25.12.11Honessite
(Ni
 
1-x
Fe
3+
x
)(OH)
 
2
[SO
 
4
]
 
x/2
· nH
 
2
O
25.12.12Hydrohonessite
(Ni
 
1-x
Fe
3+
x
)(OH)
 
2
[SO
 
4
]
 
x/2
· nH
 
2
O
25.12.13Nickelhexahydrite
(Ni,Mg,Fe)SO
 
4
· 6H
 
2
O

Other Names for Dwornikite

Synonyms:
IMA1981-031
Other Languages:
German:Dwornikit
Russian:Дворникит
Spanish:Dwornikita

Other Information

Health Warning: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:

- +
Milton, C. et al (1982): Mineralogical Magazine: 46: 351.

American Mineralogist: 68: 642.

Neues Jahrbuch für Mineralogie, Monatshefte (1991): 296-306.

Internet Links for Dwornikite

Search Engines:
  • Look for Dwornikite on Google
  • Look for Dwornikite images on Google
  • External Links:
  • Look for Dwornikite on Webmineral
  • Look for Dwornikite on Athena Mineralogy
  • Look for Dwornikite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Dwornikite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
  • The Arkenstone - Fine Minerals
  • rare and unusual minerals mainly crystallized
  • Find Dwornikite on www.crystalclassics.co.uk
  • Fine and rare minerals from mintreasure.com
  • Buy from Dave Bunk Minerals
  • Fine minerals from bisbeeborn.com
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Dwornikite specimens for sale - minfind.com
  • High-end worldwide specimens & outstanding customer service
  • Fine Minerals from Weinrich Minerals, Inc.
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  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Localities for Dwornikite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Peru
     
    • Pasco Department
      • Pasco Province
        • Huayllay District
    [Min Mag 46 (1982), 351]
    Portugal
     
    • Aveiro District
      • Albergaria-a-Velha
        • Branca
    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
     
    • Urals Region
      • Middle Urals
        • Sverdlovskaya Oblast'
          • Rezh District
            • Lipovka pegmatite field
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