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Hannayite

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About HannayiteHide

James B. Hannay
Formula:
(NH4)2Mg3H4(PO4)4 · 8H2O
Colour:
Light yellow; colourless in transmitted light.
Hardness:
2 - 3
Specific Gravity:
1.893
Crystal System:
Triclinic
Name:
Named in honor of James Ballantyne Hannay (1 January 1855, Glasgow, Scotland - 1931, Glasgow, Scotland), Scottish chemist. He is most famous for his claim of creating artificial diamonds in 1880.
This page provides mineralogical data about Hannayite.


Classification of HannayiteHide

Approved, 'Grandfathered' (first described prior to 1959)
8.CH.35

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
H : With large and medium-sized cations, RO4:H2O < 1:1
39.3.5.1

39 : HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES
3 : Miscellaneous
19.3.24

19 : Phosphates
3 : Phosphates of Be and Mg

Physical Properties of HannayiteHide

Transparency:
Transparent, Translucent
Colour:
Light yellow; colourless in transmitted light.
Hardness:
2 - 3 on Mohs scale
Cleavage:
Distinct/Good
On {001}, complete; on {110}, {110} and {130}, poor.
Density:
1.893 g/cm3 (Measured)    2.03 g/cm3 (Calculated)

Optical Data of HannayiteHide

Type:
Biaxial (-)
RI values:
nα = 1.504 - 1.555 nβ = 1.522 - 1.572 nγ = 1.539 - 1.579
2V:
Measured: 45° to 90°, Calculated: 64° to 86°
Max Birefringence:
δ = 0.035
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
Relatively weak r < v

Chemical Properties of HannayiteHide

Formula:
(NH4)2Mg3H4(PO4)4 · 8H2O
IMA Formula:
(NH4)2Mg3(PO3OH)4 · 8H2O

Crystallography of HannayiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 7.70 Å, b = 11.51 Å, c = 6.70 Å
α = 76°, β = 99.8°, γ = 115.8°
Ratio:
a:b:c = 0.669 : 1 : 0.582
Unit Cell V:
517.30 ų (Calculated from Unit Cell)
Morphology:
Crystals small and slender, elongated [001] and striated parallel to it. Tabular to 12mm, radial sprays of laths.

Type Occurrence of HannayiteHide

Other Language Names for HannayiteHide

German:Hannayit
Simplified Chinese:水磷铵镁石
Spanish:Hannayita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Newberyite1 photo of Hannayite associated with Newberyite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.CH.05WalentaiteH(Ca,Mn2+,Fe2+)Fe3+3(AsO4,PO4)4 · 7H2OOrth.
8.CH.10AnapaiteCa2Fe2+(PO4)2 · 4H2OTric. 1 : P1
8.CH.15PicropharmacoliteCa4Mg(AsO4)2(HAsO4)2 · 11H2OTric. 1 : P1
8.CH.20Dittmarite(NH4)Mg(PO4) · H2OOrth.
8.CH.20Niahite(NH4)(Mn2+,Mg)(PO4) · H2OOrth. mm2 : Pmn21
8.CH.25FrancoanelliteK3Al5(PO4)2(HPO4)3 · 12H2OTrig.
8.CH.25Taranakite(K,NH4)Al3(PO4)3(OH) · 9H2OTrig. 3m (3 2/m) : R3c
8.CH.30Schertelite(NH4)2MgH2(PO4)2 · 4H2OOrth.
8.CH.40Struvite(NH4)Mg(PO4) · 6H2OOrth. mm2
8.CH.40Struvite-(K)KMg(PO4)·6H2OOrth. mm2 : Pmn21
8.CH.40HazeniteKNaMg2(PO4)2 · 14H2OOrth. mm2
8.CH.45Rimkorolgite(Mg,Mn)5(Ba,Sr,Ca)(PO4)4 · 8H2OOrth.
8.CH.50BakhchisaraitseviteNa2Mg5(PO4)4 · 7H2OMon.
8.CH.55FahleiteCaZn5Fe3+2(AsO4)6 · 14H2OOrth.
8.CH.55SmolyaninoviteCo3Fe3+2(AsO4)4 · 11H2OOrth.
8.CH.60Barahonaite-(Al)(Ca,Cu,Na,Fe3+,Al)12Al2(AsO4)8(OH,Cl)x · nH2OMon. 2/m : P2/b
8.CH.60Barahonaite-(Fe)(Ca,Cu,Na,Fe3+,Al)12Fe3+2(AsO4)8(OH,Cl)x · nH2OMon. 2/m : P2/b

Related Minerals - Dana Grouping (8th Ed.)Hide

39.3.5.2FrancoanelliteK3Al5(PO4)2(HPO4)3 · 12H2OTrig.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.3.1MoraesiteBe2(PO4)(OH) · 4H2OMon.
19.3.2BerylloniteNaBePO4Mon. 2/m : P21/b
19.3.3HurlbutiteCaBe2(PO4)2Mon.
19.3.4HydroxylherderiteCaBe(PO4)(OH,F)Mon. 2/m : P21/b
19.3.5GlucineCaBe4(PO4)2(OH)4 · 0.5H2O
19.3.6FransoletiteCa3Be2(PO4)2(HPO4)2 · 4H2OMon.
19.3.7UraloliteCa2Be4(PO4)3(OH)3 · 5H2OMon.
19.3.9PahasapaiteLi8(Ca,Li,K)10.5Be24(PO4)24 · 38H2OIso. 2 3 : I2 3
19.3.10TiptopiteK2(Na,Ca)2Li3Be6(PO4)6(OH)2 · H2OHex.
19.3.11GainesiteNa(Na,K)(Be,Li)Zr2(PO4)4 · 1.5-2H2OTet. 4mm : I41md
19.3.12RoscheriteCa2Mn2+5Be4(PO4)6(OH)4 · 6H2OMon. 2/m : B2/m
19.3.13FaheyiteBe2Mn2+Fe3+2(PO4)4 · 6H2OTrig. 3 2 : P31 2 1
19.3.14FarringtoniteMg3(PO4)2Mon. 2/m
19.3.15HoltedahliteMg2(PO4)(OH)Trig. 3m : P3 1m
19.3.16AlthausiteMg4(PO4)2(OH,O)(F,☐)Orth. mmm (2/m 2/m 2/m) : Pnma
19.3.17NewberyiteMg(HPO4) · 3H2OOrth. mmm (2/m 2/m 2/m) : Pbca
19.3.18PhosphorrössleriteMg(HPO4) · 7H2OMon. 2/m : P2/b
19.3.19BobierriteMg3(PO4)2 · 8H2OMon. 2/m : B2/b
19.3.20Barićite(Mg,Fe)3(PO4)2 · 8H2OMon. 2/m : B2/m
19.3.21Panethite(Na,Ca)2(Mg,Fe2+)2(PO4)2Mon. 2/m : P21/b
19.3.22Dittmarite(NH4)Mg(PO4) · H2OOrth.
19.3.23Struvite(NH4)Mg(PO4) · 6H2OOrth. mm2

Other InformationHide

Notes:
Readily soluble in acids.
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 HannayiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Ulrich and vom Rath (1878) Berichte Niederrheinische Gesellschaft für Natur und Heilkunde, Bonn: 35, january 7: 11.
Ulrich and vom Rath (1879) Berichte Niederrheinische Gesellschaft für Natur und Heilkunde, Bonn: 36, January 13: 5.
Goldschmidt, V. (1918) Atlas der Krystallformen. 9 volumes, atlas, and text: vol. 4: 110.
Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 83 (identity of material as Hannayite uncertain).
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 699-700.
Frazier, A.W., Lehr, J.R., Smith, J.P. (1963) The magnesium phosphates hannayite, schertelite and bobierrite. American Mineralogist: 48: 635-641.
Catti, M., Franchini-Angela, M. (1976) Hydrogen bonding in the crystalline state. Structure of Mg3(NH4)2(HPO4)4·8H2O (hannayite), and crystal-chemical relationships with schertelite and struvite. Acta Crystallographica: B32: 2842-2848.

Internet Links for HannayiteHide

Localities for HannayiteHide

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.
Argentina
 
  • Mendoza
    • Malargüe Department
Benedetto, C., Forti, P., Galli, E., & Rossi, A. (1998). Chemical deposits in volcanic caves of Argentina. International Journal of Speleology, 27(1), 16.
Australia (TL)
 
  • Victoria
    • Corangamite Shire
      • Skipton
        • Mt. Widderin (Anderson's Hill)
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 699, 700, 710.
  • Western Australia
    • Dundas Shire
      • Cocklebiddy Roadhouse
Mineralogical Magazine 39,467-469(1973); Caves: processes, development, and management By David S. Gillieson
Chile
 
  • Tarapacá Region
    • Iquique Province
Gunnar Färber
Kenya
 
  • Kajiado County
    • Mount Suswa (Suswa Volcano)
Forti, P., E. Galli & A. Rossi (2004):"Minerogenesis of volcanic caves of Kenya" , Int. J. Speleol. 32, 3-18
Malaysia
 
  • Sarawak
Mineralogical Magazine (1983): 47: 79-80.
South Africa
Cairncross, B. and Dixon, R., (1995), Minerals of South Africa.
Mineral and/or Locality  
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