Phosphammite Mineral Data + 
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- 37.1.3.1 Phosphammite (NH4)2HPO4 P 21/c 2/m
- VII/A.12-10 Monetite CaHPO4 P1 1
- VII/A.12-20 Weilite CaHAsO4 P1 1
- VII/A.12-30 Phosphammite (NH4)2HPO4 P 21/c 2/m
- VII/A.12-40 Biphosphammite (NH4,K)H2PO4 I 42d 4 2m
- VII/A.12-50 Archerite (K,NH4)H2PO4 I 42d 4 2m
- VII/A.12-60 Olgite Na(Sr,Ba)PO4 P 3 3
- VII/A.12-70 Bario-olgite! Na(Ba,Sr,Na,REE)PO4 P 3 3
General Phosphammite Information |
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 Chemical Formula: |
(NH4)2HPO4 | ||
| 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 | |||
| Empirical Formula: |
(NH4)2(HPO4) | ||
| IMA Status: |
Valid Species (Pre-IMA) 1870 | ||
| Locality: |
Link to MinDat.org Location Data. | ||
| Synonym: |
ICSD 2799 | ||
| PDF 29-111 | |||
Phosphammite Image | |||
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Images:
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Phosphammite Crystallography |
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| Axial Ratios: |
a:b:c =1.6048:1:1.1959 | ||
| Cell Dimensions: |
a = 10.735, b = 6.689, c = 8, Z = 4; beta = 109.72° V = 540.76 Den(Calc)= 1.62 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c | ||
| X Ray Diffraction: |
By Intensity(I/Io): 5.05(1), 5.57(0.75), 4.94(0.65), | ||
Physical Properties of Phosphammite |
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| Color: |
Colorless. | ||
| Density: |
1.33 | ||
| Diaphaniety: |
Transparent | ||
| Luster: |
Vitreous (Glassy) | ||
| Streak: |
white | ||
Optical Properties of Phosphammite |
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| 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 |
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| Optical Data: |
Biaxial (+), a=1.508, b=1.518, g=1.53, bire=0.0220 | ||
Calculated Properties of Phosphammite |
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| Electron Density: |
relectron=1.72 gm/cc |
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| Fermion Index |
Fermion Index = 0.21159 Boson Index = 0.78841 |
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| Photoelectric: |
PEPhosphammite = 1.18 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Phosphammite is Not Radioactive |
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Phosphammite Classification |
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| Dana Class: |
37.1.3.1 (37)Anhydrous Acid Phosphates, etc | ||
| (37.1)with miscellaneous formulae | |||
| (37.1.3)Dana Group | |||
| Strunz Class: |
VII/A.12-30 VII - Phosphates, Arsenates and Vanadates | ||
| VII/A - Waterfree phosphates [PO4]3- without unfamiliar anions, cations of very big size: Ca, Na and andre | |||
| VII/A.12 - Monetite - Schultenite series | |||
Other Phosphammite Information |
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| References: |
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Phosphammite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 -École des Mines de Paris Search for Phosphammite using: Visit our Advertisers for Phosphammite : Translate Phosphammite Mineral Data : Ask about Phosphammite here : Print or Cut-and-Paste your Phosphammite Specimen Label here :
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