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Zaherite

A valid IMA mineral species
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03564420014948068395765.jpg
Zaherite

Salt Range, Punjab Province, Pakistan
04705570017057661493215.jpg
Zaherite

Hotson 6 Mine, Koenabib farm, Khâi-Ma Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
09814260014947905442406.jpg
Zaherite, etc.

Hotson 6 Mine, Koenabib farm, Khâi-Ma Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
03564420014948068395765.jpg
Zaherite

Salt Range, Punjab Province, Pakistan
02024090017057265802282.jpg
Zaherite

Hotson 6 Mine, Koenabib farm, Khâi-Ma Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
00409180014947968052519.jpg
Zaherite, etc.

Hotson 6 Mine, Koenabib farm, Khâi-Ma Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
03564420014948068395765.jpg
Zaherite

Salt Range, Punjab Province, Pakistan
04705570017057661493215.jpg
Zaherite

Hotson 6 Mine, Koenabib farm, Khâi-Ma Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
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About ZaheriteHide

Formula:
Al12(SO4)5(OH)26 · 20H2O
Colour:
White to blue-green
Lustre:
Pearly, Earthy
Hardness:
3½
Specific Gravity:
2.007
Crystal System:
Triclinic
Name:
Named in 1977 by A. P. Ruotsala and L. L. Babcock in honour of Mohammed Abduz Zaher (1932, Bancharampur, Bangladesh - 27 August 2017, Dhaka, Bangladesh), geologist and director general of the Geological Survey of Bangladesh. He discovered the mineral in the course of his master's thesis.
Dehydrates reversibly at room temperature.


Unique IdentifiersHide

Mindat ID:
4381
Long-form identifier:
mindat:1:1:4381:2
GUID
(UUID V4):
809c3704-0287-4105-aa34-df0415e8eef3

IMA Classification of ZaheriteHide

Classification of ZaheriteHide

Strunz-mindat (2024):
7.DE.65

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
E : With only medium-sized cations; unclassified
Dana 8th ed.:
31.10.3.1

31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
10 : Miscellaneous
Hey's CIM Ref.:
25.6.11

25 : Sulphates
6 : Sulphates of Al and Tl

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
ZahIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of ZaheriteHide

Lustre:
Pearly, Earthy
Transparency:
Translucent
Colour:
White to blue-green
Hardness:
3½ on Mohs scale
Comment:
Aggregate hardness
Cleavage:
Very Good
In one direction
Density:
2.007 g/cm3 (Measured)    
Comment:
Measured with a gas pycnometer

Optical Data of ZaheriteHide

Type:
Biaxial (+)
RI values:
nα = 1.498 nβ = 1.498 nγ = 1.499
2V:
Calculated: 38°
Birefringence:
Extremely low
Max Birefringence:
δ = 0.001
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
very weak

Chemistry of ZaheriteHide

Mindat Formula:
Al12(SO4)5(OH)26 · 20H2O
Elements listed:
Al, H, O, S - search for minerals with similar chemistry

Crystallography of ZaheriteHide

Crystal System:
Triclinic
Cell Parameters:
a = 18.47 Å, b = 19.45 Å, c = 3.77 Å
α = 95.24°, β = 91.48°, γ = 80.24°
Ratio:
a:b:c = 0.95 : 1 : 0.194
Unit Cell V:
1,329.09 ų (Calculated from Unit Cell)
Comment:
Space group P1 or P-1.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
17.9 Å(100)
9.5 Å(5)
4.82 Å(5)
4.61 Å(7)
4.58 Å(7)
4.56 Å(7)
3.55 Å(6)
3.22 Å(8)

Geological EnvironmentHide

Type Occurrence of ZaheriteHide

Type Locality:
ⓘ Salt Range, Punjab Province, Pakistan
General Appearance of Type Material:
Veinlets (up to 1 cm across) that cut massive kaolinite-boehmite rock. Densely packed aggregates of extremely small grains.
Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, number 143793.
Geological Setting of Type Material:
Kaolinite-boehmite rock.
Associated Minerals at Type Locality:
KaoliniteBöhmiteAluminite
Reference:
Ruotsala, A.P., Babcock, L.L. (1977) Zaherite, a new hydrated aluminum sulfate. American Mineralogist: 62: 1125-1128.
Download:
https://rruff.info/rruff_1.0/uploads/AM62_1125.pdf

Synonyms of ZaheriteHide

Other Language Names for ZaheriteHide

German:Zaherit
Spanish:Zaherita

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Zaherite associated with SillimaniteAl2(SiO4)O

Related Minerals - Strunz-mindat GroupingHide

7.DE.Cossaite(Mg0.5,◻)Al6(SO4)6(HSO4)F6 · 36H2OTrig. 3 : R3
7.DE.MagnesioalteriteMg2Fe3+4(SO4)4(C2O4)2(OH)4 · 17H2OMon. 2/m : B2/b
7.DE.LiangjuniteK2(Mo2O5)(SO4)2 · 3H2OTric. 1 : P1
7.DE.FabritziteZn9(SO4)2(OH)12Cl2 · 6H2OTrig. 3 : R3
7.DE.DownsiteK2(MoO3)3(SO4) · 4H2OMon. 2/m : B2/m
7.DE.05MangazeiteAl2(SO4)(OH)4 · 3H2OTric.
7.DE.10CarbonatecyanotrichiteCu4Al2(CO3,SO4)(OH)12 · 2H2OMon. 2/m : B2/m
7.DE.10CyanotrichiteCu4Al2(SO4)(OH)12 · 2H2OMon. 2/m : B2/m
7.DE.10UKI-1975-(SO:AlCu)(Cu, Al, SO4, H2O)
7.DE.15SchwertmanniteFe3+16(OH,SO4)12-13O16 · 10-12H2OTet.
7.DE.20TlalociteCu10Zn6(Te6+O4)2(Te4+O3)(OH)25Cl · 27H2OOrth.
7.DE.25UtahiteMgCu4Zn2Te6+3O14(OH)4 · 6H2OTric. 1 : P1
7.DE.35CoquanditeSb6+xO8+x(SO4)(OH)x(H2O)1- x (x = 0.3)Tric. 1 : P1
7.DE.40OsakaiteZn4(SO4)(OH)6 · 5H2OTric. 1 : P1
7.DE.42AlteriteZn2Fe3+4(SO4)4(C2O4)2(OH)4 · 17H2OMon. 2/m : B2/b
7.DE.45WilcoxiteMgAl(SO4)2F · 17H2OTric. 1 : P1
7.DE.45BarrotiteCu9Al(HSiO4)2[(SO4)(HAsO4)0.5](OH)12 · 8H2OTrig. 3
7.DE.47Tiberiobardiite{Cu9Al[SiO3(OH)]2(OH)12(H2O)6}(SO4)1.5 · 10H2OTrig. 3 : R3
7.DE.50Stanleyite(V4+O)(SO4) · 6H2OOrth.
7.DE.50Bouškaite(MoO2)2O(SO3OH)2(H2O)4Tric. 1 : P1
7.DE.57KhangalasiteFe(SO4)(OH) · 2H2OTric.
7.DE.60HydrobasaluminiteAl4(SO4)(OH)10 · 12-36H2OMon.
7.DE.62VolaschioiteFe4(SO4)O2(OH)6 · 2H2OMon. 2/m : B2/m
7.DE.75CamérolaiteCu6Al3(OH)18(H2O)2[Sb(OH)6](SO4)Tric. 1 : P1

Other InformationHide

Thermal Behaviour:
Hydrates and dehydrates reversibly at room temperature.
200 C = loss of hydrated water; 360 C = loss of hydroxyl; 855 C, 890 C = loss of SO2.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for ZaheriteHide

References for ZaheriteHide

Localities for ZaheriteHide

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 references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Australia
 
  • Queensland
    • Mareeba Shire
Harris et al. (2003)
Italy
 
  • Sicily
    • Metropolitan City of Messina
      • Eolie Islands (Aeolian Islands)
        • Lipari
          • Vulcano Island
            • Porto Levante
              • Faraglioni di Levante
                • Faraglione Nico
P.Forti (1994)
Pakistan (TL)
 
  • Punjab Province
The Mineralogical Record: 9: 115. +1 other reference
Romania
 
  • Maramureș County
    • Băiuț
Januszewska et al. (2023)
South Africa
 
  • Northern Cape
    • Namakwa District Municipality
      • Khâi-Ma Local Municipality
        • Koenabib farm
Beukes et al. (1984) +1 other reference
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