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Archerite

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About ArcheriteHide

07924930014948735596464.jpg
Michael Archer
Formula:
(K,NH4)(H2PO4)
Colour:
White
Lustre:
Sub-Vitreous, Waxy, Greasy
Hardness:
1 - 2
Specific Gravity:
2.23 (Calculated)
Crystal System:
Tetragonal
Name:
Named in 1977 by Peter Bridge for Michael Archer (25 March 1945, Sydney, Australia - ), professor of Biology, University of New South Wales, Australia. While a curator for the Queensland Museum, Archer discovered Petrogale cave and collected samples that would contain the new mineral.
Isostructural with:
This page provides mineralogical data about Archerite.


Classification of ArcheriteHide

Approved
8.AD.15

8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
D : With only large cations
Dana 7th ed.:
37.1.4.2
37.1.4.2

37 : ANHYDROUS ACID PHOSPHATES, ARSENATES AND VANADATES
1 : Miscellaneous
19.1.7

19 : Phosphates
1 : Phosphates of the alkali metals

Physical Properties of ArcheriteHide

Sub-Vitreous, Waxy, Greasy
Transparency:
Translucent
Colour:
White
Streak:
White
Hardness:
1 - 2 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
2.23 g/cm3 (Calculated)
Comment:
Ranges to 2.34

Optical Data of ArcheriteHide

Type:
Uniaxial (-)
RI values:
nω = 1.511 - 1.513 nε = 1.468 - 1.470
Birefringence:
0.041
Max Birefringence:
δ = 0.043
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Optical Extinction:
parallel

Chemical Properties of ArcheriteHide

Formula:
(K,NH4)(H2PO4)
IMA Formula:
H2K(PO4)

Crystallography of ArcheriteHide

Crystal System:
Tetragonal
Class (H-M):
4 2m - Scalenohedral
Space Group:
I4 2d
Setting:
I4 2d
Cell Parameters:
a = 7.451 Å, c = 6.974 Å
Ratio:
a:c = 1 : 0.936
Unit Cell V:
387.18 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Prismatic crystals with pyramids.
Comment:
Ranges a 7.453, b 6.972

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0009154ArcheriteFrazer B C, Pepinsky R (1953) X-ray analysis of the ferroelectric transition in KH2PO4 Acta Crystallographica 6 273-2851953synthetic0126
0009155ArcheriteFrazer B C, Pepinsky R (1953) X-ray analysis of the ferroelectric transition in KH2PO4 Acta Crystallographica 6 273-2851953synthetic, low-temperature form0116
0017377ArcheriteWest J (1930) A quantitative X-ray analysis of the structure of potassium dihydrogen phosphate (KH2PO4) _cod_database_code 1010458 Zeitschrift fur Kristallographie 74 306-33519300293
0013164ArcheriteNelmes R J, Meyer G M, Tibballs J E (1982) The crystal structure of tetragonal KH2PO4 and KD2PO4 as a function of temperature Journal of Physics C: Solid State Physics 15 59-7519820293
0013165ArcheriteNelmes R J, Meyer G M, Tibballs J E (1982) The crystal structure of tetragonal KH2PO4 and KD2PO4 as a function of temperature Journal of Physics C: Solid State Physics 15 59-7519820293
0013166ArcheriteNelmes R J, Meyer G M, Tibballs J E (1982) The crystal structure of tetragonal KH2PO4 and KD2PO4 as a function of temperature Journal of Physics C: Solid State Physics 15 59-7519820293
0013167ArcheriteNelmes R J, Meyer G M, Tibballs J E (1982) The crystal structure of tetragonal KH2PO4 and KD2PO4 as a function of temperature Journal of Physics C: Solid State Physics 15 59-7519820293
0019080ArcheriteOno Y, Yamada N, Hikita T (1991) Structure refinements of the mixed crystal K0.78(NH4)0.22H2PO4 in the temperature range from 20 K to 250K Journal of the Physical Society of Japan 60 2673-26771991synthetic020
0015150ArcheriteLevy H A, Peterson S W, Simonsen S H (1954) Neutron diffraction study of the ferroelectric modification of potassium dihydrogen phosphate Physical Review 93 1120-112119540113
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.09 Å(10)
3.72 Å(100)
3.01 Å(10)
2.91 Å(80)
2.64 Å(20)
2.34 Å(10)
1.982 Å(10)
1.953 Å(50)
Comments:
ICDD 35-807, also 20-203

Geological EnvironmentHide

Geological Setting:
Guano deposits

Type Occurrence of ArcheriteHide

Synonyms of ArcheriteHide

Other Language Names for ArcheriteHide

German:Archerit
Spanish:Archerita

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Archerite associated with BiphosphammiteNH4(H2PO4)

Related Minerals - Nickel-Strunz GroupingHide

8.AD.05NahpoiteNa2(PO3OH)Mon. 2/m : P21/m
8.AD.10MonetiteCa(PO3OH)Tric. 1
8.AD.10WeiliteCa(HAsO4)Tric. 1 : P1
8.AD.10ŠvenekiteCa(H2AsO4)2Tric. 1 : P1
8.AD.15BiphosphammiteNH4(H2PO4)Tet. 4 2 2 : I41 2 2
8.AD.20Phosphammite(NH4)2(PO3OH)Mon. 2/m : P21/b
8.AD.25BuchwalditeNaCa(PO4)Orth. mm2 : Pmn21
8.AD.30SchultenitePb(HAsO4)Mon. 2/m : P2/b
8.AD.35Chernovite-(Y)Y(AsO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.AD.35DreyeriteBi(VO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.AD.35Wakefieldite-(Ce)Ce(VO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.AD.35Wakefieldite-(Y)Y(VO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.AD.35Xenotime-(Y)Y(PO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.AD.35PretuliteSc(PO4)Tet.
8.AD.35Xenotime-(Yb)Yb(PO4)Tet.
8.AD.35Wakefieldite-(La)La(VO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.AD.35Wakefieldite-(Nd)Nd(VO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.AD.40PucheriteBi(VO4)Orth. mmm (2/m 2/m 2/m)
8.AD.45XimengiteBi(PO4)Trig.
8.AD.50Gasparite-(Ce)Ce(AsO4)Mon. 2/m : P21/m
8.AD.50Monazite-(Ce)Ce(PO4)Mon. 2/m : P21/b
8.AD.50Monazite-(La)La(PO4)Mon. 2/m : P21/m
8.AD.50Monazite-(Nd)Nd(PO4)Mon. 2/m
8.AD.50RooseveltiteBi(AsO4)Mon. 2/m
8.AD.50CheraliteCaTh(PO4)2Mon. 2/m
8.AD.50Monazite-(Sm)Sm(PO4)Mon. 2/m : P21/m
8.AD.50UM2005-35-VO:CaFePSiTh(Th,Ca)(VO4,SiO4,PO4)
8.AD.50Gasparite-(La)LaAsO4Mon. 2/m
8.AD.55TetrarooseveltiteBi(AsO4)Tet.
8.AD.60Chursinite[Hg2]2+Hg2+2[AsO4]2Mon. 2/m : P21/b
8.AD.65ClinobisvaniteBi(VO4)Mon. 2/m

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

37.1.4.1BiphosphammiteNH4(H2PO4)Tet. 4 2 2 : I41 2 2

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.1.1LithiophosphateLi3PO4Orth. mm2 : Pmn21
19.1.2OlympiteNa5Li(PO4)2Orth.
19.1.3NahpoiteNa2(PO3OH)Mon. 2/m : P21/m
19.1.4DorfmaniteNa2(PO3OH) · 2H2OOrth.
19.1.5NalipoiteNaLi2PO4Orth.
19.1.6Stercorite(NH4)Na(PO3OH) · 4H2OTric.
19.1.8BiphosphammiteNH4(H2PO4)Tet. 4 2 2 : I41 2 2
19.1.9Phosphammite(NH4)2(PO3OH)Mon. 2/m : P21/b
19.1.10LithiophiliteLiMn2+PO4Orth. mmm (2/m 2/m 2/m) : Pmna
19.1.11SickleriteLi1-x(Mn3+xMn2+1-x)PO4Orth.
19.1.12FerrisickleriteLi1-x(Fe3+xFe2+1-x)PO4Orth.
19.1.13TriphyliteLiFe2+PO4Orth. mmm (2/m 2/m 2/m) : Pmna
19.1.14TavoriteLiFe3+(PO4)(OH)Tric. 1 : P1
19.1.15MarićiteNaFe2+(PO4)Orth. mmm (2/m 2/m 2/m) : Pmna

Other InformationHide

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 ArcheriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
West, J. (1930) XXVI. a quantitative X-ray analysis of the structure of potassium dihydrogen phosphate (KH2PO4). Zeitschrift für Kristallographie: 74 : 306-332.
Frazer, B.C., Pepinsky, R. (1952) Structural changes in the ferroelectric transition of KH2PO4. Physical Review: 85: 479-480.
Frazer, B.C., Pepinsky, R. (1953) X-ray analysis of the ferroelectric transition in KH2PO4. Acta Crystallographica: 6: 273-285.
Bridge, P.J. (1977) Archerite, (K,NH4)H2PO4, a new mineral from Madura, Western Australia. Mineralogical Magazine: 41: 33-35.
Fleischer, M., Pabst, A., Mandarino, J.A., Chao, G.Y. (1977) New Mineral Names. American Mineralogist: 62: 1057-1061.
Ono, Y., Yamada, N., Hikita, T. (1991) Structure refinements of the mixed crystal K0.78(NH4)0.22H2PO4 in the temperature range from 20 K to 250 K. Journal of the Physical Society of Japan: 60: 2673-2677.

Internet Links for ArcheriteHide

Localities for ArcheriteHide

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.
Australia
 
  • Western Australia
    • Dundas Shire
      • Cocklebiddy Roadhouse
R Bottrill collection
Mineralogical Magazine 39,467-469(1973)
      • Madura Roadhouse
Mineralogical Magazine (1977): 41: 33-35.
Bahamas
 
  • San Salvador District
    • San Salvador Island
Onac B.P., Sumrall J., Mylroie J.E., Kearns J. (2009): Cave minerals of San Salvador Island, Bahamas. The University of South Florida karst studies series, 1, 70 pp.
Namibia
 
  • Khomas Region
    • Windhoek Rural
[AmMin 84:193]
Saudi Arabia
 
  • Mecca Region
Saudi Geological Survey Open-File Report SGS-OF-2004-12, 68 p.
United Arab Emirates
 
  • Emirate of Fujairah
Audra, P., Bosák, P., Gázquez, F., Cailhol, D., Skála, R., Lisá, L., ... & Zupan Hajna, N. (2017). Bat urea-derived minerals in arid environment. First identification of allantoin, C 4 H 6 N 4 O 3, in Kahf Kharrat Najem Cave, United Arab Emirates. International Journal of Speleology, 46(1), 9.
 
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