Chlorargyrite Mineral Data

General Chlorargyrite Information

Chemical Formula:

AgCl

Composition:

Molecular Weight = 143.32 gm

Silver 75.26 % Ag 80.85 % Ag₂O

Chlorine 24.74 % Cl 24.74 % Cl

- % Cl -5.58 % -O=Cl₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

AgCl

Environment:

Oxidized portions of silver deposits.

IMA Status:

Valid Species (Pre-IMA) 1875

Locality:

Broken Hill district, New South Wales, Australia. Link to MinDat.org Location Data.

Name Origin:

Named after its chemical composition of chlorine (Greek, chloros = "pale green") and silver (Latin, argentum).

Name Pronunciation:

Chlorargyrite + Pronunciation

Synonym:

Cerargyrite

Embolite - Br bearing

Horn Silver

ICSD 64734

PDF 31-1238

Chlorargyrite Image

Images:

Chlorargyrite

Comments: Butterscotch colored cubic crystals of chlorargyrite on malachite.
Location: Bisbee, Cochise County, Arizona, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Images:

Chlorargyrite

Comments: Dark (by exposure to light) octahedral crystals of chlorargyrite with brownish goethite in a vug.
Location: Broken Hill, NWS, Australia. Scale: Crystal size 3 mm.
© Dave Barthelmy

Chlorargyrite Crystallography

Cell Dimensions:

a = 5.556, Z = 4; V = 171.51 Den(Calc)= 5.55

Crystal System:

Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F m3m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.774(1), 1.962(0.5), 3.2(0.5),

Physical Properties of Chlorargyrite

Cleavage:

None

Color:

Purplish gray, Green, White, Colorless.

Density:

5.55

Diaphaneity:

Transparent to translucent

Fracture:

Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

Habit:

Columnar - Forms columns

Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Hardness:

1-1.5 - Talc or a little harder

Luminescence:

Non-fluorescent.

Luster:

Adamantine - Resinous

Streak:

white

Optical Properties of Chlorargyrite

Gladstone-Dale:

CI meas= 0.099 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.099 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1928,KPDmeas= 0.1928,KC= 0.214
Ncalc = 2.19

Optical Data:

Isotropic, n=2.07.

Calculated Properties of Chlorargyrite

Electron Density:

Bulk Density (Electron Density)=4.96 gm/cc
note: Specific Gravity of Chlorargyrite =5.55 gm/cc.

Fermion Index:

Fermion Index = 0
Boson Index = 1

Photoelectric:

PE_{Chlorargyrite}= 193.83 barns/electron
U=PE_{Chlorargyrite} x rElectron Density= 960.78 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Chlorargyrite is Not Radioactive

Chlorargyrite Classification

Dana Class:

09.01.04.01 (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 Chlorargyrite Information

References:

NAME( Emsley91) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Chlorargyrite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST
17 - theimage

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Chlorargyrite

AgCl
Dana No: 09.01.04.01 Strunz No: 03.AA.15
Locality:

Notes:

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