Chlorargyrite Mineral Data

Chlorargyrite Mineral Data +

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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).

Synonym:

Cerargyrite

Embolite-Br

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 - HexoctahedralH-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),

Crystal Structure:

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drag2 - RMB Resize/Rotate
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Wyckoff R W G , Crystal Structures , 1 (1963) p.85-237, Second edition. Interscience Publishers, New York, New York, rocksalt structure

Physical Properties of Chlorargyrite

Cleavage:

None

Color:

Purplish gray, Green, White, Colorless.

Density:

5.55

Diaphaniety:

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

Optical Data:

Isotropic, n=2.07.

Calculated Properties of Chlorargyrite

Electron Density:

r_electron=4.96 gm/cc
note: r_{Chlorargyrite}=5.55 gm/cc.

Fermion Index

Fermion Index = 0
Boson Index = 1

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Chlorargyrite is Not Radioactive

Chlorargyrite Classification

Dana Class:

9.1.4.1 (9)Anhydrous and Hydrated Halides

(9.1)where A X

(9.1.4)Dana Group

9.1.4.0 Embolite* Ag(Br,Cl) F m3m 4/m 3 2/m

9.1.4.1 Chlorargyrite AgCl F m3m 4/m 3 2/m

9.1.4.2 Bromargyrite AgBr F m3m 4/m 3 2/m

Strunz Class:

III/A.02-50 III - Halogenides

III/A - Simple halogenides, without water Metal : Halogen = 1 : 1

III/A.02 - Halite series Griceite - Bromargyrite

III/A.02-05 Griceite LiF F m3m 4/m 3 2/m

III/A.02-10 Villiaumite NaF F m3m 4/m 3 2/m

III/A.02-20 Carobbiite KF F m3m 4/m 3 2/m

III/A.02-30 Halite NaCl F m3m 4/m 3 2/m

III/A.02-40 Sylvite KCl F m3m 4/m 3 2/m

III/A.02-50 Chlorargyrite AgCl F m3m 4/m 3 2/m

III/A.02-60 Bromargyrite AgBr 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 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - MinMax(Deutsch)
12 - MinMax(English)
13 - Mineralienatlas (Deutsch)
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST
17 - theimage

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Print or Cut-and-Paste your Chlorargyrite Specimen Label here :

Chlorargyrite

AgCl
Dana No: 9.1.4.1 Strunz No: III/A.02-50
Locality:

Notes: