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Guarinoite

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About GuarinoiteHide

Formula:
Zn6(SO4)(OH)10 · 5H2O
Minor Co and Ni may replace Zn.
Colour:
Very pale pink, bright to deep pink.
Lustre:
Vitreous, Pearly
Hardness:
1½ - 2
Specific Gravity:
2.80
Crystal System:
Hexagonal
Name:
Named in honor of André Guarino (1945– ), mineral collector from Toulon, France, who collected the first specimens.

Classification of GuarinoiteHide

Approved
Approval Year:
1991
First Published:
1993
Approval History:
IMA1991-005
7.DD.80

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
D : With only medium-sized cations; sheets of edge-sharing octahedra
31.2.4.1

31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
2 : (AB)6(XO4)Zq·xH2O

Physical Properties of GuarinoiteHide

Vitreous, Pearly
Transparency:
Transparent
Colour:
Very pale pink, bright to deep pink.
Streak:
Light pink
Hardness:
1½ - 2 on Mohs scale
Cleavage:
Perfect
{001}
Fracture:
Irregular/Uneven
Density:
2.80 g/cm3 (Measured)    2.77 g/cm3 (Calculated)

Optical Data of GuarinoiteHide

Type:
Uniaxial (-)
RI values:
nω = 1.584 nε = 1.544
Max Birefringence:
δ = 0.040
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Pleochroism:
Strong
Comments:
O = pink, E = light pink

Chemical Properties of GuarinoiteHide

Formula:
Zn6(SO4)(OH)10 · 5H2O

Minor Co and Ni may replace Zn.

Crystallography of GuarinoiteHide

Crystal System:
Hexagonal
Cell Parameters:
a = 8.344(2) Å, c = 21.59(2) Å
Ratio:
a:c = 1 : 2.587
Unit Cell V:
1,301.76 ų (Calculated from Unit Cell)
Z:
3
Morphology:
Tabular {001}
Comment:
Space group P63, P63/m or P6322.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
10.8 (100)
5.40 (25)
3.300 (90)
2.725 (60)
2.563 (50)
2.351 (40)
1.575 (30)

Type Occurrence of GuarinoiteHide

General Appearance of Type Material:
Aggregates of hexagonal crystals
Place of Conservation of Type Material:
Mineralogy Department, Natural History Museum, Geneva, Switzerland, 435/85.
Reference:
Sarp, H. (1993) Guarinoite (Zn,Co,Ni)6(SO4)(OH,Cl)10*5H2O et thérèsemagnanite (Co,Zn,Ni)6(SO4)(OH,Cl)10*8H2O, deux nouveaux minéraux de la mine de Cap Garonne, Var, France: Arkives de Science Genève: 46(1): 37-44.

Synonyms of GuarinoiteHide

Other Language Names for GuarinoiteHide

German:Guarinoit
Spanish:Guarinoita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Bieberite1 photo of Guarinoite associated with Bieberite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

7.DD.05FelsőbányaiteAl4(SO4)(OH)10 · 4H2OMon. 2 : P21
7.DD.10LangiteCu4(SO4)(OH)6 · 2H2OMon. m
7.DD.10PosnjakiteCu4(SO4)(OH)6 · H2OMon. m : Pm
7.DD.10WroewolfeiteCu4(SO4)(OH)6 · 2H2OMon. m : Pm
7.DD.15SpangoliteCu6Al(SO4)(OH)12Cl · 3H2OTrig. 3m : P3 1c
7.DD.20KtenasiteZn(Cu,Zn)4(SO4)2(OH)6 · 6H2OMon.
7.DD.25ChristeliteCu2Zn3(SO4)2(OH)6 · 4H2OTric.
7.DD.30CampigliaiteMn2+Cu4(SO4)2(OH)6 · 4H2OMon.
7.DD.30DevillineCaCu4(SO4)2(OH)6 · 3H2OMon. 2/m : P21/b
7.DD.30OrthoserpieriteCa(Cu,Zn)4(SO4)2(OH)6 · 3H2OOrth. mm2 : Pca21
7.DD.30SerpieriteCa(Cu,Zn)4(SO4)2(OH)6 · 3H2OMon. 2/m : B2/b
7.DD.30NiedermayriteCdCu4(SO4)2(OH)6 · 4H2OMon. 2/m : P21/m
7.DD.30EdwardsiteCu3Cd2(SO4)2(OH)6·4H2O Mon. 2/m : P21/b
7.DD.35Carrboydite(Ni1-xAlx)(SO4)x/2(OH)2 · nH2OHex.
7.DD.35Glaucocerinite(Zn1-xAlx)(OH)2(SO4)x/2 · nH2OHex.
7.DD.35Honessite(Ni1-xFe3+x)(OH)2[SO4]x/2 · nH2OTrig.
7.DD.35Hydrohonessite(Ni1-xFe3+x)(OH)2(SO4)x/2 · nH2OHex.
7.DD.35MotukoreaiteMg6Al3(OH)18[Na(H2O)6][SO4]2 · 6H2OTrig. 3m (3 2/m) : R3m
7.DD.35Mountkeithite[(Mg1-xFe3+x)(OH)2][SO4]x/2 · nH2OHex.
7.DD.35ShigaiteMn6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2OTrig.
7.DD.35WermlanditeMg7Al2(OH)18[Ca(H2O)6][SO4]2 · 6H2OTrig. 3m (3 2/m) : P3c1
7.DD.35WoodwarditeCu1-xAlx(OH)2(SO4)x/2 · nH2OTrig. 3m (3 2/m) : R3m
7.DD.35ZincaluminiteZn6Al6(SO4)2(OH)16 · 5H2O
7.DD.35Hydrowoodwardite(Cu1-xAlx)(OH)2[SO4]x/2 · nH2OTrig. 3m (3 2/m) : R3m
7.DD.35ZincowoodwarditeZn1-xAlx(OH)2[SO4]x/2 · nH2OTrig.
7.DD.35NatroglaucoceriniteZn6Al3(OH)18[Na(H2O)6](SO4)2•6H2OHex.
7.DD.35NikischeriteFe2+6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2OTrig.
7.DD.40Lawsonbauerite(Mn2+,Mg)9Zn4(SO4)2(OH)22 · 8H2OMon. 2/m : P21/b
7.DD.40Torreyite(Mg,Mn2+)72Mn2+2Zn4(SO4)2(OH)22 · 8H2OMon. 2/m : P21/b
7.DD.45MooreiteMg92Mn2Zn4(SO4)2(OH)26 · 8H2OMon. 2/m : P2/b
7.DD.50NamuwiteZn4(SO4)(OH)6 · 4H2OTrig. 3 : P3
7.DD.55BechereriteZn7Cu(OH)13[(SiO(OH)3(SO4)]Trig. 3 : P3
7.DD.60Ramsbeckite(Cu,Zn)15(SO4)4(OH)22 · 6H2OMon. 2/m
7.DD.65VonbezingiteCa6Cu3(SO4)3(OH)12 · 2H2OMon. 2/m : P21/b
7.DD.70RedgilliteCu6(SO4)(OH)10 · H2OMon. 2/m : P21/b
7.DD.75ChalcoalumiteCuAl4(SO4)(OH)12 · 3H2OMon. 2 : P21
7.DD.75Nickelalumite(Ni,Cu)Al4(SO4,(NO3)2)(OH)12 · 3H2OMon.
7.DD.75KyrgyzstaniteZnAl4(SO4)(OH)12·3H2OMon.
7.DD.80Schulenbergite(Cu,Zn)7(SO4)2(OH)10 · 3H2OTrig.
7.DD.80ThérèsemagnaniteNaCo4(SO4)(OH)6Cl·6H2OHex.
7.DD.80UM1992-30-SO:CCuHZn(Zn,Cu)7(SO4,CO3)2(OH)10 · 3H2OTrig. 3 : P3
7.DD.85MontetrisaiteCu6(SO4)(OH)10 · 2H2OOrth. mm2 : Cmc21

Fluorescence of GuarinoiteHide

Not fluorescent

Other InformationHide

Notes:
Soluble in HCl
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for GuarinoiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Sarp, H. (1993) Guarinoite (Zn,Co,Ni)6(SO4)(OH,Cl)10*5H2O et thérèsemagnanite (Co,Zn,Ni)6(SO4)(OH,Cl)10*8H2O, deux nouveaux minéraux de la mine de Cap Garonne, Var, France: Arkives de Science Genève: 46(1): 37-44. (in French).
Riviéra Scientifique (1991): 27-40.
New Minerals (1997), New Minerals 1990-1994.
Favreau, G. (2005) Découverte de guarinoite dans l'Utah, Le Cahier des Micromonteurs: 4/2005: 30.
Delorme, F., Seron, A, Licheron, M., Veron, E. Giovannelli, F., Beny, C., Jean-Prost, V., Martineau, D. (2009) Synthesis and anion exchange properties of a Zn/Ni double hydroxide salt with a guarinoite structure. Journal of Solid State Chemistry: 182: 2350-2356.
Lheur, C. (2009) La guarinoite fait encore parler d'elle! Le Cahier des Micromonteurs: 4/2009: 22-23.

Internet Links for GuarinoiteHide

Localities for GuarinoiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
France (TL)
 
  • Provence-Alpes-Côte d'Azur
    • Var
      • Le Pradet
Archives des Sciences Genève,(1993) 46(1), 37-44
USA
 
  • Utah
    • Garfield Co.
      • Circle Cliffs
Analyzed by SEM EDS and in the collection of Brent Thorne
Mineral and/or Locality  
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