Theresemagnanite Mineral Data

Theresemagnanite Mineral Data +

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General Theresemagnanite Information

Chemical Formula:

(Co,Zn,Ni)6(SO4)(OH,Cl)10·8(H2O)

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

Empirical Formula:

Co₃Zn₂Ni(SO₄)(OH)₈Cl₂·8(H₂O)

Environment:

Secondary alteration mineral.

IMA Status:

Approved IMA 1993

Locality:

Cap Garonne mine, Var, France. Link to MinDat.org Location Data.

Name Origin:

Named for Therese Magnan for her contributions to knowledge about the Cap Garrone mine.

Synonym:

IMA1991-026

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Theresemagnanite Crystallography

Axial Ratios:

a:c = 1:3.13045

Cell Dimensions:

a = 8.363, c = 26.18, Z = 3; V = 1,585.71 Den(Calc)= 2.56

Crystal System:

Hexagonal - PyramidalH-M Symbol (6) Space Group: P 6₃

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 13.1(1), 2.527(0.9), 2.681(0.4),

Physical Properties of Theresemagnanite

Cleavage:

[0001] Perfect

Color:

Pink, Light pink.

Density:

2.52

Diaphaniety:

Transparent

Fracture:

Irregular - Flat surfaces (not cleavage) fractured in an irregular pattern.

Habit:

Platy - Sheet forms (e.g. micas).

Habit:

Spherical - Spherical, rounded aggregates.

Habit:

Thin - Flat dimensioned crystals.

Hardness:

1.5-2 - Talc-Gypsum

Luminescence:

Non-fluorescent.

Luster:

Pearly

Streak:

white

Optical Properties of Theresemagnanite

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

Optical Data:

Uniaxial (-), e=1.542, w=1.568, bire=0.0260.

Calculated Properties of Theresemagnanite

Electron Density:

r_electron=2.50 gm/cc
note: r_{Theresemagnanite}=2.52 gm/cc.

Fermion Index

Fermion Index = 0.00789
Boson Index = 0.99211

Photoelectric:

PE_{Theresemagnanite}= 18.65 barns/electron
U=PE_{Theresemagnanite} x r_electron= 46.58 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Theresemagnanite is Not Radioactive

Theresemagnanite Classification

Dana Class:

31.2.5.1 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.2)where (A+ B++)6 (XO4) Zq·x(H2O)

(31.2.5)Dana Group

31.2.5.1 Theresemagnanite (Co,Zn,Ni)6(SO4)(OH,Cl)10·8(H2O) P 6₃ 6

Strunz Class:

VI/D.03-55 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/D - Water-bearing sulfates with unfamiliar anions. cations of medium size

VI/D.03 - Langite series, Posnjakite - Nakuriite

VI/D.03-10 Posnjakite Cu4(SO4)(OH)6·(H2O) C 2/c 2/m

VI/D.03-20 Langite Cu4(SO4)(OH)6·2(H2O) Pc m

VI/D.03-30 Wroewolfeite Cu4(SO4)(OH)6·2(H2O) Pc m

VI/D.03-40 Namuwite (Zn,Cu)4(SO4)(OH)6·4(H2O) Unk Hex

VI/D.03-50 Guarinoite (Zn,Co,Ni)6(SO4)(OH,Cl)10·5(H2O) P 6₃/m,P 6₃, or P 6₃22 Hex

VI/D.03-55 Theresemagnanite (Co,Zn,Ni)6(SO4)(OH,Cl)10·8(H2O) P 6₃ 6

VI/D.03-60 Schulenbergite (Cu,Zn)7(SO4,CO3)2(OH)10·3(H2O) P 3 or P 3- Trig

VI/D.03-65 Christelite! Zn3Cu2(SO4)2(OH)6·4(H2O) P1 1

VI/D.03-70 Ktenasite (Cu,Zn)5(SO4)2(OH)6·6(H2O) P 2₁/c 2/m

VI/D.03-75 Ramsbeckite (Cu,Zn)15(SO4)4(OH)22·6(H2O) P 2₁/a 2/m

VI/D.03-80 Campigliaite Cu4Mn(SO4)2(OH)6·4(H2O) C 2 2

VI/D.03-90 Nakauriite (Mn,Ni,Cu)8(SO4)4(CO3)(OH)6·48(H2O) Unk Ortho

Other Theresemagnanite Information

References:

NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.78,p1315,1993) OPTIC PROP.(Am.Min.,Vol.78,p1315,1993)

See Also:

Links to other databases for Theresemagnanite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas

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Theresemagnanite

(Co,Zn,Ni)6(SO4)(OH,Cl)10·8(H2O)
Dana No: 31.2.5.1 Strunz No: VI/D.03-55
Locality:

Notes: