Guarinoite Mineral Data

Guarinoite Mineral Data +

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General Guarinoite Information

Chemical Formula:

(Zn,Co,Ni)6(SO4)(OH,Cl)10·5(H2O)

Composition:

Molecular Weight = 772.29 gm

Zinc 33.87 % Zn 42.15 % ZnO

Cobalt 7.63 % Co 9.70 % CoO

Nickel 7.60 % Ni 9.67 % NiO

Hydrogen 2.35 % H 20.99 % H₂O

Sulfur 4.15 % S 10.37 % SO₃

Chlorine 9.18 % Cl 9.18 % Cl

- % Cl -2.07 % -O=Cl₂

Oxygen 35.22 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Zn₄CoNi(SO₄)(OH)₈Cl₂·5(H₂O)

Environment:

Secondary mineral in the zone of oxidation.

IMA Status:

Approved IMA 1993

Locality:

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

Name Origin:

Named for Andre Guarino, French mineral collector.

Synonym:

IMA1991-005

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Guarinoite Crystallography

Axial Ratios:

a:c = 1:2.58856

Cell Dimensions:

a = 8.344, c = 21.599, Z = 3; V = 1,302.31 Den(Calc)= 2.95

Crystal System:

HexagonalSpace Group: P 6₃/m,P 6₃, or P 6₃22

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

By Intensity(I/I_o): 10.8(1), 3.3(0.9), 2.725(0.6),

Physical Properties of Guarinoite

Cleavage:

[001] Perfect

Color:

Pink, Deep pink.

Density:

2.8

Diaphaniety:

Transparent

Fracture:

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

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Hexagonal - Six-sided crystal shape in cross-section or habit.

Habit:

Thin - Flat dimensioned crystals.

Hardness:

1.5-2 - Talc-Gypsum

Luminescence:

Non-fluorescent.

Luster:

Vitreous - Pearly

Streak:

light pink

Optical Properties of Guarinoite

Dichroism (e):

light pink.

Dichroism (w):

pink.

Gladstone-Dale:

CI meas= 0.083 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.13 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1912,KPDmeas= 0.2014,KC= 0.2197

Optical Data:

Uniaxial (-), e=1.544, w=1.584, bire=0.0400.

Calculated Properties of Guarinoite

Electron Density:

r_electron=2.75 gm/cc
note: r_Guarinoite=2.80 gm/cc.

Fermion Index

Fermion Index = 0.01522
Boson Index = 0.98478

Photoelectric:

PE_Guarinoite= 22.97 barns/electron
U=PE_Guarinoite x r_electron= 63.11 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Guarinoite is Not Radioactive

Guarinoite Classification

Dana Class:

31.2.4.1 (31)Hydrated Sulfates Containing Hydroxyl or Halogen

(31.2)where (A+ B++)6 (XO4) Zq·x(H2O)

(31.2.4)Dana Group

31.2.4.1 Guarinoite (Zn,Co,Ni)6(SO4)(OH,Cl)10·5(H2O) P 6₃/m,P 6₃, or P 6₃22 Hex

Strunz Class:

VI/D.03-50 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 Guarinoite Information

References:

NAME( Dana8) PHYS. PROP.(37th List of New Min.,Min. Mag.,1996) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Guarinoite :
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 12 -École des Mines de Paris

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Guarinoite

(Zn,Co,Ni)6(SO4)(OH,Cl)10·5(H2O)
Dana No: 31.2.4.1 Strunz No: VI/D.03-50
Locality:

Notes: