Alarsite Mineral Data

Alarsite Mineral Data
Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images Share
      News Help About


General Alarsite Information

Help on Chemical Formula: Chemical Formula: AlAsO4
Help on Composition: Composition: Molecular Weight = 165.90 gm
   Aluminum  16.26 %  Al   30.73 % Al2O3
   Arsenic   45.16 %  As   69.27 % As2O5
   Oxygen    38.58 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Al(AsO4)
Help on Environment: Environment: A product of fumarolic exhalations.
Help on IMA Status: IMA Status: Approved IMA 1994 (Dana # Added)
Help on Locality: Locality: The Tolbachik Main fracture eruption, Kamchatka, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from its chemical composition of Aluminum and Arsenic.
Help on Name Pronunciation: Name Pronunciation: Alarsite Say ALARSITE
Help on Synonym: Synonym: ICSD 33254
  IMA1993-003
  PDF 31-2
 

Alarsite Image

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

Alarsite

Comments: Small thread-like alarsite fragment held to sample peg by a drop of glue.
Location: Tolbachik Volcano, Main Fracture, North Breakthrough, Kamchatka Peninsula, Russia. Scale: Peg Size 2 mm.
© Diederik Visser

Alarsite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:2.23136
Help on Cell Dimensions: Cell Dimensions: a = 5.031, c = 11.226, Z = 3; V = 246.07 Den(Calc)= 3.36
Help on Crystal System: Crystal System: Trigonal - TrapezohedralH-M Symbol (3 2) Space Group: P 3121,P 3221
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.442(1), 4.06(0.31), 4.36(0.2),
Click Here for Large Alarsite Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
 Help on Above


Machatschki F , Zeitschrift fur Kristallographie , 94 (1936) p.222-230, Die kristallstruktur von tiefquarz SiO2 und aluminiumorthoarsenat AlAsO4

View Additional jPOWD Structure files for Alarsite
[1] [2] [3] [4] [5]
 

Physical Properties of Alarsite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless, Yellowish, Pale green, Bluish.
Help on Density: Density: 3.32 - 3.35, Average = 3.33
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Anhedral Grains - Granular minerals without the expression of crystal shapes
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Hardness: Hardness: 3 - Calcite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Alarsite

Help on Dichroism (e): Dichroism (e): colorless.
Help on Dichroism (w): Dichroism (w): colorless.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.027 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.019 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1792,KPDmeas= 0.1805,KC= 0.1758
Ncalc = 1.58 - 1.59
Help on Optical Data: Optical Data: Uniaxial (+), w=1.596, e=1.608, bire=0.0120.
 

Calculated Properties of Alarsite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.16 gm/cc
note: Specific Gravity of Alarsite =3.36 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.000185164
Boson Index = 0.999814836
Help on Photoelectric: Photoelectric: PEAlarsite = 31.58 barns/electron
U=PEAlarsite x rElectron Density= 99.79 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Alarsite is Not Radioactive
 

Alarsite Classification
Help on Dana Class: Dana Class: 38.04.02.02 (38)Anhydrous Phosphates, etc
  (38.04)A+ XO4
  (38.04.02)Berlinite Group
 
38.04.02.01 Berlinite AlPO4 P 3121,P 3221 3 2
 
38.04.02.02 Alarsite! AlAsO4 P 3121,P 3221 3 2
 
38.04.02.03 Rodolicoite! FePO4 R 3121 3 2
Help on Strunz Class: Strunz Class: 08.AA.05 08 - PHOSPHATES, ARSENATES, VANADATES
  08.A - Phosphates, etc. without additional anions, without H2O
  08.AA -With small cations (some also with larger ones)
 
08.AA.05 Alarsite! AlAsO4 P 3121,P 3221 3 2
 
08.AA.05 Berlinite AlPO4 P 3121,P 3221 3 2
 
08.AA.05 Rodolicoite! FePO4 R 3121 3 2
 

Other Alarsite Information
Help on References: References: NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.80,p1328,1995) OPTIC PROP.(MinRec)
Help on See Also: See Also: Links to other databases for Alarsite :
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

Search for Alarsite using:

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

Visit our Advertisers for Alarsite :

A Bijoux Google Search for Alarsite
Adam's Minerals Google Search for Alarsite
Cape Minerals Google Search for Alarsite
Dakota Matrix Minerals Google Search for Alarsite
Excalibur Mineral Corp. Google Search for Alarsite
Exceptional Minerals Google Search for Alarsite
John Betts Fine Minerals Search for Alarsite
McDougall Minerals Google Search for Alarsite
Mineral News Website Link
Rock and Mineral Shows Google Search for Alarsite
Weinrich Minerals, Inc. Google Search for Alarsite

Ask about Alarsite 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 Alarsite Specimen Label here :

Alarsite

AlAsO4
Dana No: 38.04.02.02 Strunz No: 08.AA.05
Locality:

 

Notes: