Redingtonite
A valid IMA mineral species - grandfathered - questionable
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About Redingtonite
Formula:
(Fe2+,Mg,Ni)(Cr,Al)2(SO4)4 · 22H2O
Colour:
White, pink, purple
Lustre:
Silky
Hardness:
2
Specific Gravity:
1.761
Crystal System:
Monoclinic
Member of:
Name:
Named after its discovery locality, the Redington mercury mine, Knoxville, Napa Co., California, USA.
Unique Identifiers
Mindat ID:
3379
Long-form identifier:
mindat:1:1:3379:0
GUID
(UUID V4):
(UUID V4):
5304e285-7714-47b9-9a0e-ffd90cb142d6
IMA Classification of Redingtonite
Approved, 'Grandfathered' (first described prior to 1959), Questionable
IMA Formula:
Fe2+Cr2(SO4)4 · 22H2O
Classification of Redingtonite
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
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
29 : HYDRATED ACID AND NORMAL SULFATES
7 : AB2(XO4)4·H2O
25.8.7
25 : Sulphates
8 : Sulphates of Sb, V, Cr and U
25 : Sulphates
8 : Sulphates of Sb, V, Cr and U
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Rdt | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Redingtonite
Silky
Transparency:
Translucent
Colour:
White, pink, purple
Comment:
The purple color occurs on fractures across the fiber length.
Streak:
White
Hardness:
2 on Mohs scale
Density:
1.761 g/cm3 (Measured)
Optical Data of Redingtonite
Type:
Biaxial
Chemistry of Redingtonite
Mindat Formula:
(Fe2+,Mg,Ni)(Cr,Al)2(SO4)4 · 22H2O
Crystallography of Redingtonite
Crystal System:
Monoclinic
Class (H-M):
2 - Sphenoidal
Morphology:
Massive with a fine parallel-fibrous structure.
Comment:
Space Group: n.d. Z = n.d.
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47b : [Sulfates and sulfites] | |
Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
50 : Coal and/or oil shale minerals | <0.36 |
Type Occurrence of Redingtonite
Geological Setting of Type Material:
oxidation product of pyrite
Associated Minerals at Type Locality:
Reference:
Becker G F (1888) Descriptive geology of the Knoxville District. Redingtonite. Monographs of the United States Geological Survey 13, 279-279
Other Language Names for Redingtonite
German:Redingtonit
Spanish:Redingtonita
Relationship of Redingtonite to other Species
Member of:
Other Members of this group:
Apjohnite | Mn2+Al2(SO4)4 · 22H2O | Mon. 2/m : P21/b |
Bílinite | Fe2+Fe3+2(SO4)4 · 22H2O | Mon. 2/m : P21/b |
Dietrichite | (Zn,Fe2+,Mn2+)Al2(SO4)4 · 22H2O | Mon. 2/m : P21/b |
Halotrichite | FeAl2(SO4)4 · 22H2O | Mon. 2 : P2 |
Pickeringite | MgAl2(SO4)4 · 22H2O | Mon. 2/m : P21/b |
Wupatkiite | (Co,Mg,Ni)Al2(SO4)4 · 22H2O | Mon. 2/m : P21/b |
Common Associates
Associated Minerals Based on Photo Data:
3 photos of Redingtonite associated with Botryogen | MgFe3+(SO4)2(OH) · 7H2O |
2 photos of Redingtonite associated with Knoxvillite | MgFe3+4(SO4)6(OH)2 · 20H2O |
Related Minerals - Strunz-mindat Grouping
7.CB. | Sarvodaite | Al2(SO4)3 · 5H2O |
7.CB.02 | Voudourisite | CdSO4 · H2O |
7.CB.05 | Dwornikite | Ni(SO4) · H2O |
7.CB.05 | Gunningite | ZnSO4 · H2O |
7.CB.05 | Kieserite | MgSO4 · H2O |
7.CB.05 | Poitevinite | (Cu,Fe)SO4 · H2O |
7.CB.05 | Szmikite | MnSO4 · H2O |
7.CB.05 | Szomolnokite | FeSO4 · H2O |
7.CB.05 | Cobaltkieserite | CoSO4 · H2O |
7.CB.07 | Sanderite | MgSO4 · 2H2O |
7.CB.10 | Bonattite | CuSO4 · 3H2O |
7.CB.12 | Belogubite | CuZn(SO4)2 · 10H2O |
7.CB.15 | Aplowite | (Co,Mn,Ni)SO4 · 4H2O |
7.CB.15 | Boyleite | (Zn,Mg)SO4 · 4H2O |
7.CB.15 | Ilesite | (Mn,Zn,Fe)SO4 · 4H2O |
7.CB.15 | Rozenite | FeSO4 · 4H2O |
7.CB.15 | Starkeyite | MgSO4 · 4H2O |
7.CB.15 | Drobecite | CdSO4 · 4H2O |
7.CB.15 | Cranswickite | MgSO4 · 4H2O |
7.CB.20 | Chalcanthite | CuSO4 · 5H2O |
7.CB.20 | Jôkokuite | MnSO4 · 5H2O |
7.CB.20 | Pentahydrite | MgSO4 · 5H2O |
7.CB.20 | Siderotil | FeSO4 · 5H2O |
7.CB.25 | Bianchite | Zn(SO4) · 6H2O |
7.CB.25 | Chvaleticeite | Mn(SO4) · 6H2O |
7.CB.25 | Ferrohexahydrite | FeSO4 · 6H2O |
7.CB.25 | Hexahydrite | MgSO4 · 6H2O |
7.CB.25 | Moorhouseite | Co(SO4) · 6H2O |
7.CB.25 | Nickelhexahydrite | Ni(SO4) · 6H2O |
7.CB.30 | Retgersite | NiSO4 · 6H2O |
7.CB.35 | Bieberite | CoSO4 · 7H2O |
7.CB.35 | Boothite | CuSO4 · 7H2O |
7.CB.35 | Mallardite | MnSO4 · 7H2O |
7.CB.35 | Melanterite | Fe2+(H2O)6SO4 · H2O |
7.CB.35 | Zincmelanterite | (Zn,Cu,Fe)SO4 · 7H2O |
7.CB.35 | Alpersite | (Mg,Cu)(SO4) · 7H2O |
7.CB.40 | Epsomite | MgSO4 · 7H2O |
7.CB.40 | Goslarite | ZnSO4 · 7H2O |
7.CB.40 | Morenosite | NiSO4 · 7H2O |
7.CB.45 | Alunogen | Al2(SO4)3 · 17H2O |
7.CB.45 | Meta-alunogen | Al2(SO4)3 · 12H2O |
7.CB.50 | Aluminocoquimbite | Al2Fe2(SO4)6(H2O)12 · 6H2O |
7.CB.50 | Lazaridisite | 3CdSO4 · 8H2O |
7.CB.52 | Pararaisaite | CuMg[Te6+O4(OH)2] · 6H2O |
7.CB.55 | Coquimbite | AlFe3(SO4)6(H2O)12 · 6H2O |
7.CB.55 | Paracoquimbite | Fe4(SO4)6(H2O)12 · 6H2O |
7.CB.55 | Rhomboclase | (H5O2)Fe3+(SO4)2 · 2H2O |
7.CB.55 | Raisaite | CuMg[Te6+O4(OH)2] · 6H2O |
7.CB.57 | Caichengyunite | Fe2+3Al2(SO4)6 · 30H2O |
7.CB.60 | Kornelite | Fe2(SO4)3 · 7H2O |
7.CB.65 | Quenstedtite | Fe2(SO4)3 · 11H2O |
7.CB.70 | Lausenite | Fe2(SO4)3 · 5H2O |
7.CB.75 | Lishizhenite | ZnFe2(SO4)4 · 14H2O |
7.CB.75 | Römerite | Fe2+Fe3+2(SO4)4 · 14H2O |
7.CB.80 | Ransomite | CuFe2(SO4)4 · 6H2O |
7.CB.85 | Apjohnite | Mn2+Al2(SO4)4 · 22H2O |
7.CB.85 | Bílinite | Fe2+Fe3+2(SO4)4 · 22H2O |
7.CB.85 | Dietrichite | (Zn,Fe2+,Mn2+)Al2(SO4)4 · 22H2O |
7.CB.85 | Halotrichite | FeAl2(SO4)4 · 22H2O |
7.CB.85 | Pickeringite | MgAl2(SO4)4 · 22H2O |
7.CB.85 | Wupatkiite | (Co,Mg,Ni)Al2(SO4)4 · 22H2O |
7.CB.90 | Meridianiite | MgSO4 · 11H2O |
Other Information
Notes:
Soluble in H2O.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Redingtonite
mindat.org URL:
https://www.mindat.org/min-3379.html
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References for Redingtonite
Reference List:
Localities for Redingtonite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Australia | |
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USA (TL) | |
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Redington Mine, Knoxville, Knoxville Mining District, Napa County, California, USA