Stercorite Mineral Data

Stercorite Mineral Data
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General Stercorite Information

Help on Chemical Formula: Chemical Formula: H(NH4)Na(PO4)•4(H2O)
Help on Composition: Composition: Molecular Weight = 209.07 gm
   Sodium      11.00 %  Na   14.82 % Na2O
   Phosphorus  14.82 %  P    33.95 % P2O5
   Hydrogen     1.93 %  H      -   % Calc as (NH4)2O
   Hydrogen     4.34 %  H    38.78 % H2O
   Nitrogen     6.70 %  N    12.45 % (NH4)2O
   Oxygen      61.22 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: H(NH4)Na(PO4)•4(H2O)
Help on Environment: Environment: Bird and bat guano deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1850
Help on Locality: Locality: Ichaboe Island, northwest of L¨uderitz, Namibia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the Latin for dung.
Help on Name Pronunciation: Name Pronunciation: Stercorite + Pronunciation Say STERCORITE
Help on Synonym: Synonym: ICSD 2036
  PDF 24-1048
 

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Stercorite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.6519:1:0.6064
Help on Cell Dimensions: Cell Dimensions: a = 6.921, b = 10.616, c = 6.438, Z = 2; alpha = 98.29°, beta = 90.42°, gamma = 71.16° V = 442.99 Den(Calc)= 1.57
Help on Crystal System: Crystal System: Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.53(1), 9.93(0.95), 4.24(0.55),
Click Here for Large Stercorite Structure Window Crystal Structure:

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Ferraris G , Franchini-Angela M , Acta Crystallographica, Section B , 30 (1974) p.504-510, Hydrogen bonding in the crystalline state. Crystal structure and twinning of, NaNH4HPO4*4H2O (Stercorite), Locality: guano deposits

 

Physical Properties of Stercorite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless, White, Yellowish, Brownish.
Help on Density: Density: 1.554
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Stercorite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.304 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.29 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2866,KPDmeas= 0.2896,KC= 0.2221
Ncalc = 1.35
Help on Optical Data: Optical Data: Biaxial (+), a=1.439, b=1.442, g=1.469, bire=0.0300, 2V(Calc)=38, 2V(Meas)=35.567.
 

Calculated Properties of Stercorite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.65 gm/cc
note: Specific Gravity of Stercorite =1.57 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.06
Boson Index = 0.94
Help on Photoelectric: Photoelectric: PEStercorite = 1.00 barns/electron
U=PEStercorite x rElectron Density= 1.65 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Stercorite is Not Radioactive
 

Stercorite Classification
Help on Dana Class: Dana Class: 39.03.01.01 (39)Hydrated Acid Phosphates, etc
  (39.03)with miscellaneous formulae
  (39.03.01)Dana Group
 
39.03.01.01 Stercorite H(NH4)Na(PO4)•4(H2O) P1 1
Help on Strunz Class: Strunz Class: 08.CJ.05 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CJ -With only large cations
 
08.CJ.05 Stercorite H(NH4)Na(PO4)•4(H2O) P1 1
 

Other Stercorite 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 Stercorite :
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
15 - WWW-MINCRYST

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Stercorite

H(NH4)Na(PO4)•4(H2O)
Dana No: 39.03.01.01 Strunz No: 08.CJ.05
Locality:

 

Notes: