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Reevesite Mineral Data

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General Reevesite Information

Help on Chemical  Formula: Chemical Formula: Ni6Fe+++2(CO3)(OH)16•4(H2O)
Help on Composition: Composition: Molecular Weight = 868.02 gm
   Iron      12.87 %  Fe   18.40 % Fe2O3
   Nickel    40.57 %  Ni   51.63 % NiO
   Hydrogen   2.79 %  H    24.91 % H2O
   Carbon     1.38 %  C     5.07 % CO2
   Oxygen    42.39 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ni6Fe3+2(CO3)(OH)16•4(H2O)
Help on Environment: Environment: Alteration product of a highly weathered iron-nickel meteorite.
Help on IMA Status: IMA Status: Approved IMA 1967
Help on Locality: Locality: Wolf Creek meteorite. Found three km west of the Scotia talc mine, Bon Accord area, Barberton, Transvaal, South Africa Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Frank Reeves (1886-?), American geologist who discovered the Wolf Creek meteorite crater.
Help on Name Pronunciation: Name Pronunciation: Reevesite + Pronunciation Say REEVESITE

Reevesite Image

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Comments: Green reevesite coatings on serpentinite rock.
Location: Pacific Asbestos Corporation Mine, near Copperopolis, Tuolumne County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Reevesite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:6.88539
Help on Cell Dimensions: Cell Dimensions: a = 6.614, c = 45.54, Z = 3; V = 1,725.25 Den(Calc)= 2.51
Help on Crystal System: Crystal System: Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.63(1), 2.6(0.81), 3.8(0.73),

Physical Properties of Reevesite

Help on Color: Color: Green yellow, Light yellow.
Help on Density: Density: 2.8 - 2.88, Average = 2.84
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Pearly

Optical Properties of Reevesite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.001 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.13 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2759,KPDmeas= 0.2438,KC= 0.2442
Ncalc = 1.61 - 1.7
Help on Optical Data: Optical Data: Uniaxial (-), e=1.65, w=1.735, bire=0.0850.

Calculated Properties of Reevesite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.84 gm/cc
note: Specific Gravity of Reevesite =2.84 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0076720171
Boson Index = 0.9923279829
Help on Photoelectric: Photoelectric: PEReevesite = 19.60 barns/electron
U=PEReevesite x rElectron Density= 55.65 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Reevesite is Not Radioactive

Reevesite Classification

Help on  Dana Class: Dana Class: 16b.06.03.01 (16b)Carbonates - Hydroxyl or Halogen
  (16b.06)Dana Type
  (16b.06.03)Sjorgrenite-Hydrotalcite Group (Hydrotalcite Subgroup:Rhombohedral)
16b.06.03.01 Reevesite Ni6Fe2(CO3)(OH)16•4(H2O) R 3m 3 2/m
16b.06.03.02 Takovite Ni6Al2(OH)16(CO3,OH)•4(H2O) R 3m 3 2/m
16b.06.03.03 Comblainite Ni6Co2(CO3)(OH)16•4(H2O) R 3m 3 2/m
Help on  Strunz Class: Strunz Class: 05.DA.50 05 - CARBONATES (NITRATES)
  05.D - Carbonates with Additional Anions, with H2O
  05.DA -With medium-sized cations
05.DA.50 Desautelsite Mg6Mn2(CO3)(OH)16•4(H2O) R 3m or R 3m Trig
05.DA.50 Comblainite Ni6Co2(CO3)(OH)16•4(H2O) R 3m 3 2/m
05.DA.50 Hydrotalcite Mg6Al2(CO3)(OH)16•4(H2O) R 3m 3 2/m
05.DA.50 Pyroaurite Mg6Fe2(CO3)(OH)16•4(H2O) R 3m 3 2/m
05.DA.50 Reevesite Ni6Fe2(CO3)(OH)16•4(H2O) R 3m 3 2/m
05.DA.50 Stichtite Mg6Cr2(CO3)(OH)16•4(H2O) R 3m 3 2/m
05.DA.50 Takovite Ni6Al2(OH)16(CO3,OH)•4(H2O) R 3m 3 2/m

Other Reevesite Information

Help on References: References: NAME( AntBidBlaNic3) 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 Reevesite :
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: 16b.06.03.01 Strunz No: 05.DA.50





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