Mineralogy Database

Retgersite Mineral Data

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General Retgersite Information

Help on Chemical  Formula: Chemical Formula: NiSO4•6(H2O)
Help on Composition: Composition: Molecular Weight = 262.85 gm
   Nickel    22.33 %  Ni   28.42 % NiO
   Hydrogen   4.60 %  H    41.12 % H2O
   Sulfur    12.20 %  S    30.46 % SO3
   Oxygen    60.87 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ni(SO4)•6(H2O)
Help on Environment: Environment: Oxidization zone of nickel-bearing hydrothermal mineral deposits, formed from H2O solution between 31.5 deg C and 53.5 deg C. Dimorphous with nickelhexahydrite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1949
Help on Locality: Locality: Cottonwood Canyon, Nevada. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Jan Willem Retgers (1856-1896), Dutch physical chemist and chemical crystallographer.
Help on Name Pronunciation: Name Pronunciation: Retgersite + Pronunciation Say RETGERSITE
Help on Synonym: Synonym: ICSD 62051
  PDF 47-1811

Retgersite Image

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Comments: Pale blue powdery retgersite on rock.
Location: Mina La Motte, near Frederocktown, Madison County, Missouri, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Retgersite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.69537
Help on Cell Dimensions: Cell Dimensions: a = 6.782, c = 18.28, Z = 4; V = 840.80 Den(Calc)= 2.08
Help on Crystal System: Crystal System: Tetragonal - Trapezohedral H-M Symbol (4 2 2) Space Group: P 41212,P 43212
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.25(1), 4.57(0.4), 2.964(0.2),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 0 1 1) ( 1 1 2) ( 1 1 0) ( 0 1 2) ( 0 0 1)

Warning: this java applet does not work in some browsers because of security restrictions.


Physical Properties of Retgersite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Dark green.
Help on Density: Density: 2.07
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: greenish white

Optical Properties of Retgersite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.011 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.016 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.24,KPDmeas= 0.2411,KC= 0.2437
Ncalc = 1.5 - 1.51
Help on Optical Data: Optical Data: Uniaxial (-), e=1.4873, w=1.5109, bire=0.0236.

Calculated Properties of Retgersite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.14 gm/cc
note: Specific Gravity of Retgersite =2.07 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0037371925
Boson Index = 0.9962628075
Help on Photoelectric: Photoelectric: PERetgersite = 9.24 barns/electron
U=PERetgersite x rElectron Density= 19.80 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Retgersite is Not Radioactive

Retgersite Classification

Help on  Dana Class: Dana Class: (29)Hydrated Acid and Sulfates
  (29.06)where A XO4 � x(H2O)
  (29.06.09)Dana Group Retgersite NiSO4•6(H2O) P 41212,P 43212 4 2 2
Help on  Strunz Class: Strunz Class: 07.CB.30 07 - SULFATES (SELENATES, TELLURATES)
  07.C - Sulfates (selenates, etc.) without Additional Anions, with H2O
  07.CB -With only medium-sized cations
07.CB.30 Retgersite NiSO4•6(H2O) P 41212,P 43212 4 2 2

Other Retgersite Information

Help on References: References: NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Retgersite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 07.CB.30





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