Redingtonite Mineral Data

Redingtonite Mineral Data
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General Redingtonite Information

Help on Chemical Formula: Chemical Formula: (Fe++,Mg,Ni)(Cr,Al)2(SO4)4•22(H2O)
Help on Composition: Composition: Molecular Weight = 918.74 gm
   Magnesium   0.79 %  Mg    1.32 % MgO
   Aluminum    1.47 %  Al    2.77 % Al2O3
   Chromium    8.49 %  Cr   12.41 % Cr2O3
   Iron        3.65 %  Fe    4.69 % FeO
   Nickel      0.64 %  Ni    0.81 % NiO
   Hydrogen    4.83 %  H    43.14 % H2O
   Sulfur     13.96 %  S    34.86 % SO3
   Oxygen     66.17 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+0.6Mg0.3Ni0.1Cr1.5Al0.5(SO4)4•22(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1888
Help on Locality: Locality: Redington mine, Knoxville, Napa Co., California. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after it's locality.
Help on Name Pronunciation: Name Pronunciation: Redingtonite + Pronunciation Say REDINGTONITE
 

Redingtonite Image

Click Here for Larger Redingtonite Image in a New Browser Window Images:
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Redingtonite   Botryogen

Comments: Pale pink granular redingtonite on yellow-brown botryogen.
Location: Redington Mine, Knoxville, Napa County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Redingtonite Crystallography
Help on Crystal System: Crystal System: Monoclinic
 

Physical Properties of Redingtonite

Help on Color: Color: White, Light violet, Light purple.
Help on Density: Density: 1.761
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Hardness: Hardness: 2 - Gypsum
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Silky
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: white
 

Optical Properties of Redingtonite

Help on Optical Data: Optical Data: NCalc= 1.46 - from Gladstone-Dale relationship (KC = 0.263) where Ncalc=Dmeas*KC+1
 

Calculated Properties of Redingtonite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.83 gm/cc
note: Specific Gravity of Redingtonite =1.76 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PERedingtonite = 4.07 barns/electron
U=PERedingtonite x rElectron Density= 7.44 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Redingtonite is Not Radioactive
 

Redingtonite Classification
Help on Dana Class: Dana Class: 29.07.03.06 (29)Hydrated Acid and Sulfates
  (29.07)where A (B)2 (XO4)4 · x(H2O)
  (29.07.03)Halotrichite Group (Monoclinic with 22 H2O)
 
29.07.03.01 Pickeringite MgAl2(SO4)4•22(H2O) P 2 2
 
29.07.03.02 Halotrichite FeAl2(SO4)4•22(H2O) P 2 2
 
29.07.03.03 Apjohnite MnAl2(SO4)4•22(H2O) P 21/c 2/m
 
29.07.03.04 Dietrichite (Zn,Fe,Mn)Al2(SO4)4•22(H2O) P 21/c 2/m
 
29.07.03.05 Bilinite FeFe2(SO4)4•22(H2O) P 21/c 2/m
 
29.07.03.06 Redingtonite (Fe,Mg,Ni)(Cr,Al)2(SO4)4•22(H2O) Mono
 
29.07.03.07 Wupatkiite (Co,Mg,Ni)Al2(SO4)4•22(H2O) P 21/c 2/m
Help on Strunz Class: Strunz Class: 07.CB.85 07 - SULFATES (SELENATES, TELLURATES)
  07.C - Sulfates (selenates, etc.) without Additional Anions, with H2O
  07.CB -With only medium-sized cations
 
07.CB.85 Bilinite FeFe2(SO4)4•22(H2O) P 21/c 2/m
 
07.CB.85 Apjohnite MnAl2(SO4)4•22(H2O) P 21/c 2/m
 
07.CB.85 Dietrichite (Zn,Fe,Mn)Al2(SO4)4•22(H2O) P 21/c 2/m
 
07.CB.85 Halotrichite FeAl2(SO4)4•22(H2O) P 2 2
 
07.CB.85 Pickeringite MgAl2(SO4)4•22(H2O) P 2 2
 
07.CB.85 Redingtonite (Fe,Mg,Ni)(Cr,Al)2(SO4)4•22(H2O) Mono
 
07.CB.85 Wupatkiite (Co,Mg,Ni)Al2(SO4)4•22(H2O) P 21/c 2/m
 

Other Redingtonite Information
Help on References: References: NAME( MinRec) PHYS. PROP.(Dana)
Help on See Also: See Also: Links to other databases for Redingtonite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info

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Redingtonite

(Fe++,Mg,Ni)(Cr,Al)2(SO4)4•22(H2O)
Dana No: 29.07.03.06 Strunz No: 07.CB.85
Locality:

 

Notes: