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Redingtonite

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Formula:
(Fe2+,Mg,Ni)(Cr,Al)2(SO4)4·22H2O
System:
Monoclinic
Colour:
White, pink, purple
Hardness:
2
Name:
Named after its discovery locality, the Redington mercury mine, Knoxville, Napa Co., California, USA.

Classification of Redingtonite

Questionable/Doubtful
7.CB.85

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
B : With only medium-sized cations
29.7.3.6

29 : HYDRATED ACID AND NORMAL SULFATES
7 : AB2(XO4)4·H2O
25.8.7

25 : Sulphates
8 : Sulphates of Sb, V, Cr and U
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First Recorded Occurrence of Redingtonite

Year of Discovery:
1888

Physical Properties of Redingtonite

Silky
Colour:
White, pink, purple
Comment:
The purple color occurs on fractures across the fiber length.
Streak:
White
Hardness (Mohs):
2
Density:
1.761 g/cm3 (Measured)    

Crystallography of Redingtonite

Crystal System:
Monoclinic
Morphology:
Massive with a fine parallel-fibrous structure.

Chemical Properties of Redingtonite

Formula:
(Fe2+,Mg,Ni)(Cr,Al)2(SO4)4·22H2O
Essential elements:
All elements listed in formula:

Relationship of Redingtonite to other Species

Other Members of Group:
ApjohniteMn2+Al2(SO4)4 · 22H2O
BíliniteFe2+Fe23+(SO4)4 · 22H2O
Dietrichite(Zn,Fe2+,Mn2+)Al2(SO4)4 · 22H2O
HalotrichiteFeAl2(SO4)4 · 22H2O
PickeringiteMgAl2(SO4)4 · 22H2O
Wupatkiite(Co,Mg,Ni)Al2(SO4)4·22H2O
7.CB.05Dwornikite(Ni,Fe)SO4 · 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.85Wupatkiite(Co,Mg,Ni)Al2(SO4)4·22H2O
7.CB.90MeridianiiteMgSO4 · 11H2O
25.8.1Klebelsbergite(SbO)4(SO4)(OH)2
25.8.2CoquanditeSb6+xO8+x(SO4)(OH)x(H2O)1- x (x = 0.3)
25.8.3PeretaiteCa(SbO)4(SO4)2(OH)2 · 2H2O
25.8.4CannoniteBi2(SO4)O(OH)2
25.8.5Minasragrite(V4+O)(SO4) · 5H2O
25.8.6Stanleyite(V4+O)(SO4) · 6H2O
25.8.8Metauranopilite(UO2)6(SO4)(OH)10 · 5H2O
25.8.9Uranopilite(UO2)6(SO4)O2(OH)6 · 14H2O
25.8.10NatrozippeiteNa5(UO2)8(SO4)4O5(OH)3 · 12H2O
25.8.11ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O
25.8.12JohanniteCu(UO2)2(SO4)2(OH)2 · 8H2O
25.8.13MagnesiozippeiteMg(UO2)2(SO4)O2 · 3.5H2O
25.8.14ZinczippeiteZn(UO2)2(SO4)O2 · 3.5H2O

Other Names for Redingtonite

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 Redingtonite

Reference List:
Becker (1888) USGS Monograph 13: 279.

Melville and Lindgren (1890) USGS Bull. 61: 23.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 529.

Mineralogical Record (1971): 2: 152.

Internet Links for Redingtonite

Localities for Redingtonite

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.
Australia
 
  • South Australia
    • Murray Basin
      • Murray Riverlands
Rob Fitzpatrick, Paul Shand, Mark Raven and Stuart McClure, 2010, Occurrence and environmental significance of sideronatrite and other mineral precipitates in Acid Sulfate Soils. 19th World Congress of Soil Science, Soil Solutions for a Changing World
USA
 
  • California
    • Napa Co.
      • Knoxville District
        • Knoxville
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 529; Mineralogical Record (1971): 2: 152; Becker, George F. (1888b), Geology of the quicksilver deposits of the Pacific slope: USGS Monograph 13, atlas: 486; Melville, William Harlow & Waldemar Lindgren (1890), Contributions to the mineralogy of the Pacific coast: USGS Bulletin 61, 40pp.: 23; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 264.
Mineral and/or Locality  
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