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Dwornikite

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Formula:
(Ni,Fe)SO4 · H2O
System:
Monoclinic
Colour:
White
Hardness:
2 - 3
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 Gelogical Survey.
This page provides mineralogical data about Dwornikite.

Classification of Dwornikite

Approved 1981
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
29.6.2.6

29 : HYDRATED ACID AND NORMAL SULFATES
6 : AXO4·xH2O
25.12.10

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

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)SO4 · H2O
Essential elements:
All elements listed in formula:

Relationship of Dwornikite to other Species

Member of:
Other Members of Group:
CobaltkieseriteCoSO4 · H2O
GunningiteZnSO4 · H2O
KieseriteMgSO4 · H2O
SzmikiteMnSO4 · H2O
SzomolnokiteFeSO4 · H2O
7.CB.05GunningiteZnSO4 · H2O
7.CB.05KieseriteMgSO4 · H2O
7.CB.05Poitevinite(Cu,Fe,Zn)SO4 · H2O
7.CB.05SzmikiteMnSO4 · H2O
7.CB.05SzomolnokiteFeSO4 · H2O
7.CB.05CobaltkieseriteCoSO4 · H2O
7.CB.07SanderiteMgSO4 · 2H2O
7.CB.10BonattiteCuSO4 · 3H2O
7.CB.15Aplowite(Co,Mn,Ni)SO4 · 4H2O
7.CB.15Boyleite(Zn,Mg)SO4 · 4H2O
7.CB.15Ilesite(Mn,Zn,Fe)SO4 · 4H2O
7.CB.15RozeniteFeSO4 · 4H2O
7.CB.15StarkeyiteMgSO4 · 4H2O
7.CB.15DrobeciteCdSO4 · 4H2O
7.CB.15CranswickiteMgSO4 · 4H2O
7.CB.20ChalcanthiteCuSO4 · 5H2O
7.CB.20JôkokuiteMnSO4 · 5H2O
7.CB.20PentahydriteMgSO4 · 5H2O
7.CB.20SiderotilFeSO4 · 5H2O
7.CB.25Bianchite(Zn,Fe)SO4 · 6H2O
7.CB.25Chvaleticeite(Mn,Mg)SO4 · 6H2O
7.CB.25FerrohexahydriteFeSO4 · 6H2O
7.CB.25HexahydriteMgSO4 · 6H2O
7.CB.25Moorhouseite(Co,Ni,Mn)SO4 · 6H2O
7.CB.25Nickelhexahydrite(Ni,Mg,Fe)SO4 · 6H2O
7.CB.30RetgersiteNiSO4 · 6H2O
7.CB.35BieberiteCoSO4 · 7H2O
7.CB.35BoothiteCuSO4 · 7H2O
7.CB.35MallarditeMnSO4 · 7H2O
7.CB.35MelanteriteFeSO4 · 7H2O
7.CB.35Zincmelanterite(Zn,Cu,Fe)SO4 · 7H2O
7.CB.35Alpersite(Mg,Cu)[SO4] · 7H2O
7.CB.40EpsomiteMgSO4 · 7H2O
7.CB.40GoslariteZnSO4 · 7H2O
7.CB.40MorenositeNiSO4 · 7H2O
7.CB.45AlunogenAl2(SO4)3 · 17H2O
7.CB.45Meta-alunogenAl2(SO4)3 · 12H2O
7.CB.50AluminocoquimbiteFeAl(SO4)3 · 9H2O
7.CB.55CoquimbiteFe2-xAlx(SO4)3 · 9H2O, x ~0.5
7.CB.55ParacoquimbiteFe2(SO4)3 · 9H2O
7.CB.55Rhomboclase(H5O2)Fe3+(SO4)2 · 2H2O
7.CB.60KorneliteFe2(SO4)3 · 7H2O
7.CB.65QuenstedtiteFe2(SO4)3 · 10H2O
7.CB.70LauseniteFe2(SO4)3·5H2O
7.CB.75LishizheniteZnFe2(SO4)4 · 14H2O
7.CB.75RömeriteFe2+Fe23+(SO4)4 · 14H2O
7.CB.80RansomiteCuFe2(SO4)4 · 6H2O
7.CB.85ApjohniteMn2+Al2(SO4)4 · 22H2O
7.CB.85BíliniteFe2+Fe23+(SO4)4 · 22H2O
7.CB.85Dietrichite(Zn,Fe2+,Mn2+)Al2(SO4)4 · 22H2O
7.CB.85HalotrichiteFeAl2(SO4)4 · 22H2O
7.CB.85PickeringiteMgAl2(SO4)4 · 22H2O
7.CB.85Redingtonite(Fe2+,Mg,Ni)(Cr,Al)2(SO4)4·22H2O
7.CB.85Wupatkiite(Co,Mg,Ni)Al2(SO4)4·22H2O
7.CB.90MeridianiiteMgSO4 · 11H2O
25.12.1BieberiteCoSO4 · 7H2O
25.12.2CobaltzippeiteCo(UO2)2(SO4)O2 · 3.5H2O
25.12.3Aplowite(Co,Mn,Ni)SO4 · 4H2O
25.12.4Moorhouseite(Co,Ni,Mn)SO4 · 6H2O
25.12.5RetgersiteNiSO4 · 6H2O
25.12.6MorenositeNiSO4 · 7H2O
25.12.7NickelblöditeNa2(Ni,Mg)(SO4)2 · 4H2O
25.12.8Nickelboussingaultite(NH4)2Ni(SO4)2 · 6H2O
25.12.9NickelzippeiteNi2(UO2)6(SO4)3(OH)10 · 16H2O
25.12.11Honessite(Ni1-xFex3+)(OH)2[SO4]x/2 · nH2O
25.12.12Hydrohonessite(Ni1-xFex3+)(OH)2[SO4]x/2 · nH2O
25.12.13Nickelhexahydrite(Ni,Mg,Fe)SO4 · 6H2O

Other Names for Dwornikite

Name in Other Languages:

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:
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

Localities for Dwornikite

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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 (TL)
 
  • 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
Mineral and/or Locality  
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