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Redgillite Mineral Data

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General Redgillite Information

Help on Chemical  Formula: Chemical Formula: Cu6(OH)10(SO4)•H2O
Help on Composition: Composition: Molecular Weight = 665.25 gm
   Copper    57.27 %  Cu   71.68 % CuO
   Hydrogen   1.82 %  H    16.24 % H2O
   Sulfur     4.83 %  S    12.07 % SO3
   Oxygen    36.08 %  O
            ______        ______ 
            100.00 %       99.99 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu5.99(OH)9.99(SO4)•(H2O)
Help on Environment: Environment: Found in thin fractures of partly oxidized sulphides. Langite group
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: Silver Gill mine, Cumbria, United Kingdom Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the Red Gill mine.
Help on Synonym: Synonym: IMA2004-016

Redgillite Image

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Comments: Light green acicular microcrystals of redgillite with unidentified blue Cu sulphate on matrix.
Location: Grube Schone Aussicht, Siegerland, Germany. Scale: Picture size 2 mm.
© Diederik Visser

Redgillite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.3021:1:1.8615
Help on Cell Dimensions: Cell Dimensions: a = 3.155, b = 10.441, c = 19.436, Z = 2; beta = 90.089° V = 640.25 Den(Calc)= 3.45
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.11(1)(100,012 ), 9.72(0.9)(90,002 ), 2.318(0.5)(15,008 ),2.88(0.3)(30,112,112), 4.6(0.3)(30,022 ), 4.068(0.2)(20,023 ), 1.941(0.15)(15,141,141), 2(0.15)(50,1

Physical Properties of Redgillite

Help on Cleavage: Cleavage: {001} Perfect, {100} Good, {010} Good
Help on Color: Color: Grass green.
Help on Density: Density: 3.45
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Fracture: Fracture: Brittle - Sectile - Brittle fracture with slightly sectile shavings possible.
Help on Habit: Habit: Bladed - Aggregates of thin lath-like crystals (e.g. kyanite).
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Redgillite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.041 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.041 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2065,KPDmeas= 0.2065,KC= 0.1984
Ncalc = 1.68
Help on Optical Data: Optical Data: Biaxial (-), a=1.693, b=1.721, g=1.723, bire=0.0300

Calculated Properties of Redgillite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.34 gm/cc
note: Specific Gravity of Redgillite =3.45 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0005385201
Boson Index = 0.9994614799
Help on Photoelectric: Photoelectric: PERedgillite = 25.27 barns/electron
U=PERedgillite x rElectron Density= 84.37 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Redgillite is Not Radioactive

Redgillite Classification

Help on  Dana Class: Dana Class: (31)Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.02)where (A+ B++)6 (XO4) Zq�x(H2O)
  (31.02.08)Dana Group Redgillite! Cu6(OH)10(SO4)•H2O P 21/c 2/m
Help on  Strunz Class: Strunz Class: 07.DD.70 07 - SULFATES (SELENATES, TELLURATES)
  07.D - Sulfates (selenates, etc.) with additional anions, with H2O
  07.DD -With only medium-sized cations; sheets of edge-sharing octahedra
07.DD.70 Redgillite! Cu6(OH)10(SO4)•H2O P 21/c 2/m

Other Redgillite Information

Help on References: References: NAME( AmMin, v91, p1456) PHYS. PROP.(AmMin, v91, p1456) OPTIC PROP.(AmMin, v91, p1456)
Help on See Also: See Also: Links to other databases for Redgillite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Dana No: Strunz No: 07.DD.70





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