Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (2 online) Mindat Auctions

Phosphammite

Big Photo

Guañape Island, Virù, Trujillo Province, La Libertad Department, Peru
© 2008, JGW

Show Phosphammite Photos (2)
Formula:
(NH
 
4
)
 
2
HPO
 
4
System:MonoclinicColour:Colourless
Name:From the mineral's chemistry: a PHOSPHate of AMMonium
This page provides mineralogical data about Phosphammite.

Classification of Phosphammite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:7/A.12-30
Nickel-Strunz 10th (pending) edition ID:8.AD.20

8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
D : With only large cations
Dana 7th edition ID:37.1.3.1
Dana 8th edition ID:37.1.3.1

37 : ANHYDROUS ACID PHOSPHATES, ARSENATES AND VANADATES
1 : Miscellaneous
Hey's CIM Ref.:19.1.9

19 : Phosphates
1 : Phosphates of the alkali metals
mindat.org URL:http://www.mindat.org/min-3197.html
Please feel free to link to this page.

Type Occurrence of Phosphammite

Type Locality:Earles Find, Toppin Hill, Western Australia, Australia
Place of Conservation of Type Material:Western Australian Museum, Perth, Australia (neotype)
Geological Setting of type material:guano deposit

Occurrences of Phosphammite

Geological Setting:guano deposits

Physical Properties of Phosphammite

Diaphaneity (Transparency):Transparent
Colour:Colourless
Density (measured):1.61 g/cm3
Density (calculated):1.61 g/cm3

Crystallography of Phosphammite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/b {P1 1 21/b} {P21/c} {P1 21/c 1} {P21/a}
Cell Parameters:a = 8.03Å, b = 6.68Å, c = 11.02Å
β = 113.38°
Ratio:a:b:c = 1.202 : 1 : 1.65
Unit Cell Volume:V 542.58 ų (Calculated from Unit Cell)
Z:4
Morphology:space group given as P21/a
X-Ray Powder Diffraction:
d-spacingIntensity
5.57 (75)
5.05 (100)
4.94 (65)
3.78 (50)
3.22 (65)
3.14 (45)
3.06 (45)
Comments:Synthetic (ICDD 29-0111)

Optical Data of Phosphammite

Type:Biaxial (+)
RI values: nα = 1.508 nβ = 1.518 nγ = 1.530
2V:Measured: 80° to 85°, Calculated: 85°
Maximum Birefringence:δ = 0.022

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Dispersion:none

Chemical Properties of Phosphammite

Formula:
(NH
 
4
)
 
2
HPO
 
4
Essential elements:H, N, O, P
All elements listed in formula:H, N, O, P

Relationship of Phosphammite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.AD.05Nahpoite
Na
 
2
HPO
 
4
8.AD.10Monetite
CaHPO
 
4
8.AD.10Weilite
CaHAsO
 
4
8.AD.10Švenekite
Ca(H
 
2
AsO
 
4
)
 
2
8.AD.15Archerite
(K,NH
 
4
)[H
 
2
PO
 
4
]
8.AD.15Biphosphammite
(NH
 
4
,K)H
 
2
PO
 
4
8.AD.25Buchwaldite
NaCaPO
 
4
8.AD.30Schultenite
PbHAsO
 
4
8.AD.35Chernovite-(Y)
YAsO
 
4
8.AD.35Dreyerite
BiVO
 
4
8.AD.35Wakefieldite-(Ce)
(Ce,Pb)VO
 
4
8.AD.35Wakefieldite-(Y)
YVO
 
4
8.AD.35Xenotime-(Y)
YPO
 
4
8.AD.35Pretulite
ScPO
 
4
8.AD.35Xenotime-(Yb)
(Yb,Y,HREE)PO
 
4
8.AD.35Wakefieldite-(La)
LaVO
 
4
8.AD.40Pucherite
BiVO
 
4
8.AD.45Ximengite
BiPO
 
4
8.AD.50Gasparite-(Ce)
(Ce,REE)AsO
 
4
8.AD.50Monazite-(Ce)
(Ce,La,Nd,Th)PO
 
4
8.AD.50Monazite-(La)
(La,Ce,Nd)PO
 
4
8.AD.50Monazite-(Nd)
(Nd,La,Ce)PO
 
4
8.AD.50Rooseveltite
BiAsO
 
4
8.AD.50Cheralite
(Ca,Ce)(Th,Ce)[PO
 
4
]
 
2
8.AD.50Monazite-(Sm)
(Sm,Gd,Ce,Th)(PO
 
4
)
8.AD.50UM2005-35-VO:CaFePSiTh
(Th,Ca)[VO
 
4
,SiO
 
4
,PO
 
4
]
8.AD.55Tetrarooseveltite
Bi(AsO
 
4
)
8.AD.60Chursinite
(Hg-Hg)
 
0.5
Hg
2+
 
[AsO
 
4
]
8.AD.65Clinobisvanite
BiVO
 
4
Related Minerals - Hey's Index Grouping:

- +
19.1.1Lithiophosphate
Li
 
3
[PO
 
4
]
19.1.2Olympite
Na
 
5
Li[PO
 
4
]
 
2
19.1.3Nahpoite
Na
 
2
HPO
 
4
19.1.4Dorfmanite
Na
 
2
(PO
 
3
OH)·2H
 
2
O
19.1.5Nalipoite
NaLi
 
2
[PO
 
4
]
19.1.6Stercorite
NaNH
 
4
HPO
 
4
·4H
 
2
O
19.1.7Archerite
(K,NH
 
4
)[H
 
2
PO
 
4
]
19.1.8Biphosphammite
(NH
 
4
,K)H
 
2
PO
 
4
19.1.10Lithiophilite
LiMn
2+
 
[PO
 
4
]
19.1.11Sicklerite
(LiMn
2+
 
,Fe
3+
 
)[PO
 
4
]
19.1.12Ferrisicklerite
(Fe
3+
 
,LiMn
2+
 
)[PO
 
4
]
19.1.13Triphylite
LiFe
2+
 
[PO
 
4
]
19.1.14Tavorite
LiFe
3+
 
[OH|PO
 
4
]
19.1.15Marićite
NaFe
2+
 
[PO
 
4
]

Other Names for Phosphammite

Synonyms:
Phosphammonite
Other Languages:
German:Phosphammit
Phosphammonit
Italian:Fosfammite

Other Information

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

References for Phosphammite

Reference List:Bridge, P.J.: "Urea, a new mineral, and neotype phosphammite from Western Australia":Mineralogical Magazine (1973): 39: 346-348.

Smith, J.P., L.R.Lehr, & W.E. Brown: (1957): "Crystallographic properties of diammonium phosphate": Acta Cryst:10:709.

Internet Links for Phosphammite

Search Engines:
  • Look for Phosphammite on Google
  • Look for Phosphammite images on Google
    • External Links:
  • Look for Phosphammite on Webmineral
  • Look for Phosphammite on Athena Mineralogy
  • Look for Phosphammite on Wikipedia
  • Look for Phosphammite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Phosphammite in the Natural History Museum (London) online catalogue
  • Phosphammite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Wilensky Fine Minerals
  • Find Phosphammite on www.crystalclassics.co.uk
  • Buy Minerals and Crystals from Crystalarium.com
  • Lapis Mineral Magazin
  • SpiriferMinerals.com - high quality specimens
  • Fabre Minerals - search for Phosphammite specimens
  • Wendel Minerals - Auktion & Shop
  • Buy from David K Joyce minerals
  • Buy fine minerals and gemstones from Pala International
  • Rare and Unusual minerals at Mineralogical Research Company
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Buy minerals from Mineralium.com
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to sponsor this page.

    Localities for Phosphammite

    Hide Locality List
    The 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.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Australia
     
    • Western Australia
      • Lake Rason
    		Mineralogical Magazine (1973): 39: 346-348.
      • Toppin Hill
    		Min.Mag.(1973) 39, 346-348
    Peru
     
    • La Libertad Department
      • Trujillo Province
        • Virù
    		Mineralogical Magazine (1973): 39, 346-348.
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 29th Oct 2009 06:17:02