Mineralogy Database

Salammoniac Mineral Data

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General Salammoniac Information

Help on Chemical  Formula: Chemical Formula: NH4Cl
Help on Composition: Composition: Molecular Weight = 53.49 gm
   Hydrogen   7.54 %  H      -   % Calc as (NH4)2O
   Nitrogen  26.19 %  N    48.68 % (NH4)2O
   Chlorine  66.28 %  Cl   66.28 % Cl
               -   %  Cl  -14.96 % -O=Cl2   
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: (NH4)Cl
Help on Environment: Environment: Volcanic fumaroles, burning coal seams and quano deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1546
Help on Locality: Locality: Etna, Vesuvius, Italy Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Alchemist's Latin name for "salt of Ammon", used by early writers for common rock salt from near the Oracle of Ammon in Egypt.
Help on Name Pronunciation: Name Pronunciation: Salammoniac + Pronunciation Say SALAMMONIAC
Help on Synonym: Synonym: Sal Ammoniac - Renamed to Salammoniac by Mineralogical Record, v39 (2008), p131

Salammoniac Image

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Comments: Network of white or slightly grayish sal-ammoniac crystals with some sulfur.
Location: Ravat, Tien Shan Mtns, Central Tajikistan. Scale: 6 x 4 x 3 cm.
© John Attard

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  Erythrosiderite   Salammoniac

Comments: Orange-brown aggregates of erythrosiderite with sal ammoniac. Material from the 1926 eruption of the Erythrosiderite is hygroscopic and must be stored in a closed vial. The photo was made through the vial.
Location: Vesuvius, Naples Province, Campania, Italy. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Salammoniac Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 3.8758, Z = 1; V = 58.22 Den(Calc)= 1.53
Help on Crystal System: Crystal System: Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: P m3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.74(1), 1.582(0.25), 3.87(0.25),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 1 2 3) ( 0 1 1) ( 1 1 2)

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Physical Properties of Salammoniac

Help on Cleavage: Cleavage: {???} Poor, {???} Poor, {???} Poor
Help on Color: Color: Colorless, White, Grayish, Yellow, Brown.
Help on Density: Density: 1.5
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Hardness: Hardness: 1.5-2 - Talc-Gypsum
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Salammoniac

Help on Optical Data: Optical Data: Isotropic, n=1.693.

Calculated Properties of Salammoniac

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.60 gm/cc
note: Specific Gravity of Salammoniac =1.53 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.26
Boson Index = 0.74
Help on Photoelectric: Photoelectric: PESalammoniac = 4.15 barns/electron
U=PESalammoniac x rElectron Density= 6.65 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Salammoniac is Not Radioactive

Salammoniac Classification

Help on  Dana Class: Dana Class: (09)Anhydrous and Hydrated Halides
  (09.01)where A X
  (09.01.03)Dana Group Salammoniac NH4Cl P m3m 4/m 3 2/m Lafossaite! Tl(Cl,Br) P m3m 4/m 3 2/m
Help on  Strunz Class: Strunz Class: 03.AA.25 03 - HALIDES
  03.A - Simple Halides, Without H2O
  03.AA -M:X = 1:1, 2:3, 3:5, etc.
03.AA.25 Salammoniac NH4Cl P m3m 4/m 3 2/m
03.AA.25 Lafossaite! Tl(Cl,Br) P m3m 4/m 3 2/m

Other Salammoniac Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana's Sys. of Min.,7th ed.,Vol.2,1951) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Salammoniac :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Dana No: Strunz No: 03.AA.25