Guarinoite Mineral Data

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. Name Pronunciation: Guarinoite + Pronunciation Synonym: IMA1991-005  

Guarinoite Image

Images:

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 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 Diaphaneity: 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
Ncalc = 1.62 - 1.65 Optical Data: Uniaxial (-), e=1.544, w=1.584, bire=0.0400.  

Calculated Properties of Guarinoite

Electron Density: Bulk Density (Electron Density)=2.75 gm/cc
note: Specific Gravity of Guarinoite =2.80 gm/cc.
Fermion Index: Fermion Index = 0.01
Boson Index = 0.99 Photoelectric: PE_Guarinoite = 22.97 barns/electron
U=PE_Guarinoite x rElectron Density= 63.11 barns/cc.
Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Guarinoite is Not Radioactive  

Guarinoite Classification

Dana Class: 31.02.04.01 (31)Hydrated Sulfates Containing Hydroxyl or Halogen   (31.02)where (A+ B++)6 (XO4) Zq·x(H2O)   (31.02.04)Dana Group  

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

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 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 - 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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