Mineralogy Database

Theresemagnanite Mineral Data

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General Theresemagnanite Information

Help on Chemical  Formula: Chemical Formula: (Co,Zn,Ni)6(SO4)(OH,Cl)10•8(H2O)
Help on Composition: Composition: Molecular Weight = 813.42 gm
   Zinc      16.08 %  Zn   20.01 % ZnO
   Cobalt    21.74 %  Co   27.64 % CoO
   Nickel     7.22 %  Ni    9.18 % NiO
   Hydrogen   2.97 %  H    26.58 % H2O
   Sulfur     3.94 %  S     9.84 % SO3
   Chlorine   8.72 %  Cl    8.72 % Cl
               -   %   Cl   -1.97 % -O=Cl2   
   Oxygen    39.34 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Co3Zn2Ni(SO4)(OH)8Cl2•8(H2O)
Help on Environment: Environment: Secondary alteration mineral.
Help on IMA Status: IMA Status: Approved IMA 1993
Help on Locality: Locality: Cap Garonne mine, Var, France. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Therese Magnan for her contributions to knowledge about the Cap Garrone mine.
Help on Name Pronunciation: Name Pronunciation: Theresemagnanite + Pronunciation Say THERESEMAGNANITE
Help on Synonym: Synonym: IMA1991-026

Theresemagnanite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:3.13045
Help on Cell Dimensions: Cell Dimensions: a = 8.363, c = 26.18, Z = 3; V = 1,585.71 Den(Calc)= 2.56
Help on Crystal System: Crystal System: Hexagonal - Pyramidal H-M Symbol (6) Space Group: P 63
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 13.1(1), 2.527(0.9), 2.681(0.4),

Physical Properties of Theresemagnanite

Help on Cleavage: Cleavage: {0001} Perfect
Help on Color: Color: Pink, Light pink.
Help on Density: Density: 2.52
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Irregular - Flat surfaces (not cleavage) fractured in an irregular pattern.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Habit: Habit: Spherical - Spherical, rounded aggregates.
Help on Habit: Habit: Thin - Flat dimensioned crystals.
Help on Hardness: Hardness: 1.5-2 - Talc-Gypsum
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Pearly
Help on Streak: Streak: white

Optical Properties of Theresemagnanite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.053 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.068 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2168,KPDmeas= 0.2202,KC= 0.2326
Ncalc = 1.59 - 1.6
Help on Optical Data: Optical Data: Uniaxial (-), e=1.542, w=1.568, bire=0.0260.

Calculated Properties of Theresemagnanite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.50 gm/cc
note: Specific Gravity of Theresemagnanite =2.52 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0078961647
Boson Index = 0.9921038353
Help on Photoelectric: Photoelectric: PETheresemagnanite = 18.65 barns/electron
U=PETheresemagnanite x rElectron Density= 46.58 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Theresemagnanite is Not Radioactive

Theresemagnanite Classification

Help on  Dana Class: Dana Class: (31)Hydrated Sulfates Containing Hydroxyl or Halogen
  (31.02)where (A+ B++)6 (XO4) Zq�x(H2O)
  (31.02.05)Dana Group Theresemagnanite (Co,Zn,Ni)6(SO4)(OH,Cl)10•8(H2O) P 63 6
Help on  Strunz Class: Strunz Class: 07.DD.80 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.80 Guarinoite (Zn,Co,Ni)6(SO4)(OH,Cl)10•5(H2O) P 63/m,P 63, or P 6322 Hex
07.DD.80 Schulenbergite (Cu,Zn)7(SO4,CO3)2(OH)10•3(H2O) Hex Hex
07.DD.80 Theresemagnanite (Co,Zn,Ni)6(SO4)(OH,Cl)10•8(H2O) P 63 6

Other Theresemagnanite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.78,p1315,1993) OPTIC PROP.(Am.Min.,Vol.78,p1315,1993)
Help on See Also: See Also: Links to other databases for Theresemagnanite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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Dana No: Strunz No: 07.DD.80





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