Bromargyrite Mineral Data
General Bromargyrite Information
Chemical Formula:
AgBr
Composition:
Molecular Weight = 187.77 gm
Silver 57.45 % Ag 61.71 % Ag2 O
Bromine 42.55 % Br 42.55 % Br
- % Br -4.26 % -O=Br2
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
AgBr
Environment:
Oxidized portions of silver deposits.
IMA Status:
Valid Species (Pre-IMA) 1841
Locality:
Mexico, Chile. Link to MinDat.org Location Data.
Name Origin:
Named after its composition of bromine (Greek, bromos - "stench") and silver (Latin, argentum).
Name Pronunciation:
Bromargyrite + Pronunciation
Synonym:
Bromyrite
Embolite-Cl
ICSD 65061
PDF 6-438
Bromargyrite Image
Images:
Bromargyrite Crystallography
Cell Dimensions:
a = 5.7745, Z = 4; V = 192.55 Den(Calc)= 6.48
Crystal System:
Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F m3m
X Ray Diffraction:
By Intensity(I/Io ): 2.886(1), 2.041(0.55), 1.667(0.16),
Physical Properties of Bromargyrite
Cleavage:
None
Color:
Greenish brown, Gray green, Grayish yellow, Yellow, Olive green.
Density:
5.8 - 6, Average = 5.9
Diaphaneity:
Transparent to translucent
Fracture:
Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.
Hardness:
1.5-2 - Talc-Gypsum
Luster:
Adamantine - Greasy
Streak:
gray
Optical Properties of Bromargyrite
Gladstone-Dale:
CI meas = -0.081 (Poor) - where the CI = (1-KPDmeas /KC ) CI calc = 0.016 (Superior) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.1929,KPDmeas = 0.2119,KC = 0.196 Ncalc = 2.14 - 2.27
Optical Data:
Isotropic, n=2.25.
Calculated Properties of Bromargyrite
Electron Density:
Bulk Density (Electron Density)=5.66 gm/cc note: Specific Gravity of Bromargyrite =6.48 gm/cc.
Fermion Index:
Fermion Index = 0 Boson Index = 1
Photoelectric:
PEBromargyrite = 188.51 barns/electronU=PEBromargyrite x r Electron Density=1,066.92 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Bromargyrite is Not Radioactive
Bromargyrite Classification
Dana Class:
09.01.04.02 (09) Anhydrous and Hydrated Halides
(09.01) where A X
(09.01.04) Embolite Series
09.01.04.00 Embolite * Ag(Br,Cl) F m3m 4/m 3 2/m
09.01.04.01 Chlorargyrite AgCl F m3m 4/m 3 2/m
09.01.04.02 Bromargyrite AgBr F m3m 4/m 3 2/m
Strunz Class:
03.AA.15 03 - HALIDES
03.A - Simple Halides, Without H2O
03.AA -M:X = 1:1, 2:3, 3:5, etc.
03.AA.15 Bromargyrite AgBr F m3m 4/m 3 2/m
03.AA.15 Chlorargyrite AgCl F m3m 4/m 3 2/m
03.AA.15 Embolite * Ag(Br,Cl) F m3m 4/m 3 2/m
Other Bromargyrite Information
References:
NAME( Emsley91) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
See Also:
Links to other databases for Bromargyrite :
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
Search for Bromargyrite using:
[AOL ]
[Bing ]
[Dog Pile ]
[GeoScienceWorld ]
[HotBot ]
[Ixquick ]
[Lycos ]
[MAMMA ]
[Scirus ]
[Teoma ]
[WebCrawler ]
[Wikipedia ]
[YAHOO ]
Visit our Advertisers for Bromargyrite :
Ask about Bromargyrite 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
Espa�ol
Print or Cut-and-Paste your Bromargyrite Specimen Label here :
Bromargyrite
AgBr
Dana No: 09.01.04.02 Strunz No: 03.AA.15
Locality:
Notes:
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.