Mineralogy Database

Phosphammite Mineral Data

Search Webmineral :

General Phosphammite Information

Help on Chemical  Formula: Chemical Formula: (NH4)2HPO4
Help on Composition: Composition: Molecular Weight = 132.06 gm
   Phosphorus  23.45 %  P    53.74 % P2O5
   Hydrogen     6.11 %  H      -   % Calc as (NH4)2O
   Hydrogen     0.76 %  H     6.82 % H2O
   Nitrogen    21.21 %  N    39.43 % (NH4)2O
   Oxygen      48.46 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: (NH4)2(HPO4)
Help on Environment: Environment: Probably a crystallization product of the liquid fraction of guano.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1870
Help on Locality: Locality: In Toppin Hill Cave, about 320 km northeast of Kalgoorlie, Western Australia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as a PHOSPHate of AMMonium.
Help on Name Pronunciation: Name Pronunciation: Phosphammite + Pronunciation Say PHOSPHAMMITE
Help on Synonym: Synonym: ICSD 2799
  PDF 29-111

Phosphammite Image

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image


Comments: Tan opaque granular phosphammite.
Location: Guanape Islands, La Libertad, Peru. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Phosphammite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.6048:1:1.1959
Help on Cell Dimensions: Cell Dimensions: a = 10.735, b = 6.689, c = 8, Z = 4; beta = 109.72° V = 540.76 Den(Calc)= 1.62
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.05(1), 5.57(0.75), 4.94(0.65),

Physical Properties of Phosphammite

Help on Color: Color: Colorless.
Help on Density: Density: 1.33
Help on Diaphaneity: Diaphaneity: Transparent
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Phosphammite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -2.209 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -1.634 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.3202,KPDmeas= 0.39,KC= 0.1215
Ncalc = 1.16 - 1.2
Help on Optical Data: Optical Data: Biaxial (+), a=1.508, b=1.518, g=1.53, bire=0.0220

Calculated Properties of Phosphammite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.72 gm/cc
note: Specific Gravity of Phosphammite =1.62 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.21
Boson Index = 0.79
Help on Photoelectric: Photoelectric: PEPhosphammite = 1.18 barns/electron
U=PEPhosphammite x rElectron Density= 2.02 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Phosphammite is Not Radioactive

Phosphammite Classification

Help on  Dana Class: Dana Class: (37)Anhydrous Acid Phosphates, etc
  (37.01)with miscellaneous formulae
  (37.01.03)Dana Group Phosphammite (NH4)2HPO4 P 21/c 2/m
Help on  Strunz Class: Strunz Class: 08.AD.20 08 - PHOSPHATES, ARSENATES, VANADATES
  08.A - Phosphates, etc. without additional anions, without H2O
  08.AD -With only large cations
08.AD.20 Phosphammite (NH4)2HPO4 P 21/c 2/m

Other Phosphammite Information

Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Phosphammite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

Search for Phosphammite using:

Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Phosphammite :

Ask about Phosphammite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

Print or Cut-and-Paste your Phosphammite Specimen Label here :


Dana No: Strunz No: 08.AD.20





Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.