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Chlorargyrite

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Formula:
AgCl
Colour:
Colourless (fresh); bright chartreuse-green, light yellow, light green, grey; becoming violet-brown on exposure to light.
Lustre:
Adamantine, Resinous, Waxy
Hardness:
1½ - 2½
Specific Gravity:
5.556
Crystal System:
Isometric
Name:
In allusion to the composition, containing CHLORine and silver (Latin: ARGentum).
Hide all sections | Show all sections

Classification of ChlorargyriteHide

Approved, 'Grandfathered' (first described prior to 1959)
3.AA.15

3 : HALIDES
A : Simple halides, without H2O
A : M:X = 1:1, 2:3, 3:5, etc.
Dana 7th ed.:
9.1.4.1
9.1.4.1

9 : NORMAL HALIDES
1 : AX
8.3.1

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
3 : Halides of Ag

Physical Properties of ChlorargyriteHide

Adamantine, Resinous, Waxy
Transparency:
Transparent, Translucent
Colour:
Colourless (fresh); bright chartreuse-green, light yellow, light green, grey; becoming violet-brown on exposure to light.
Streak:
White
Hardness:
1½ - 2½ on Mohs scale
Tenacity:
Sectile
Cleavage:
None Observed
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
5.556 g/cm3 (Measured)    5.57 g/cm3 (Calculated)

Optical Data of ChlorargyriteHide

Type:
Isotropic
RI values:
n = 2.071
Max Birefringence:
δ = 0.000 - Isotropic minerals have no birefringence
Surface Relief:
Very High
Type:
Isotropic

Chemical Properties of ChlorargyriteHide

Formula:
AgCl
Common Impurities:
I

Crystallography of ChlorargyriteHide

Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Fm3m
Cell Parameters:
a = 5.554 Å
Unit Cell V:
171.32 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Crystals cubic, with {111} and {011}, sometimes large, and the other reported forms as small and rare modifying faces. Often parallel or subparallel groups. Massive; crusts and waxy coatings with drusy surfaces. Wax- or horn-like masses; columnar or stalactitic; rarely fibrous.
Twinning:
On {111}.

X-Ray Powder DiffractionHide

Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacingIntensity
3.22 (30)
2.77 (100)
1.961 (60)
1.672 (20)
1.240 (40)
1.134 (30)
0.926 (30)

Type Occurrence of ChlorargyriteHide

Synonyms of ChlorargyriteHide

Other Language Names for ChlorargyriteHide

Varieties of ChlorargyriteHide

Bromian ChlorargyriteA Br-bearing variety of chlorargyrite.
Originally reported from Colorado Mine, Copiapó Province, Atacama Region, Chile.
IodemboliteAn iodine- and bromine-rich variety of chlorargyrite.
Iodian Bromian ChlorargyriteA silver halide containing substantial amounts of Cl, Br and I

Relationship of Chlorargyrite to other SpeciesHide

Other Members of this group:
BromargyriteAgBrIso. m3m (4/m 3 2/m) : Fm3m
MarshiteCuIIso. 4 3m : F4 3m
Miersite(Ag,Cu)IIso. 4 3m : F4 3m
NantokiteCuClIso. 4 3m : F4 3m

Common AssociatesHide

AtacamiteCu2(OH)3Cl
BromargyriteAgBr
CerussitePbCO3
IodargyriteAgI
JarositeKFe3+ 3(SO4)2(OH)6
Limonite(Fe,O,OH,H2O)
MalachiteCu2(CO3)(OH)2
PyromorphitePb5(PO4)3Cl
SilverAg
WadA generic name for (often poorly crystalline) soft manganese oxides/hydroxides, often containing significant amounts ...
WulfenitePb(MoO4)
Associated Minerals Based on Photo Data:
Quartz40 photos of Chlorargyrite associated with Quartz on mindat.org.
Cerussite25 photos of Chlorargyrite associated with Cerussite on mindat.org.
Silver22 photos of Chlorargyrite associated with Silver on mindat.org.
Gold18 photos of Chlorargyrite associated with Gold on mindat.org.
Malachite14 photos of Chlorargyrite associated with Malachite on mindat.org.
Augelite13 photos of Chlorargyrite associated with Augelite on mindat.org.
Chrysocolla10 photos of Chlorargyrite associated with Chrysocolla on mindat.org.
Pyrite8 photos of Chlorargyrite associated with Pyrite on mindat.org.
Iodargyrite8 photos of Chlorargyrite associated with Iodargyrite on mindat.org.
Jarosite7 photos of Chlorargyrite associated with Jarosite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

3.AA.05MarshiteCuIIso. 4 3m : F4 3m
3.AA.05Miersite(Ag,Cu)IIso. 4 3m : F4 3m
3.AA.05NantokiteCuClIso. 4 3m : F4 3m
3.AA.05UM1999-11:I:CuSCu(I,S)
3.AA.10IodargyriteAgIHex. 6mm : P6mm
3.AA.10Tocornalite(Ag,Hg)I
3.AA.15BromargyriteAgBrIso. m3m (4/m 3 2/m) : Fm3m
3.AA.20CarobbiiteKFIso. m3m (4/m 3 2/m)
3.AA.20GriceiteLiFIso. m3m (4/m 3 2/m) : Fm3m
3.AA.20HaliteNaClIso. m3m (4/m 3 2/m) : Fm3m
3.AA.20SylviteKClIso. m3m (4/m 3 2/m) : Fm3m
3.AA.20VilliaumiteNaFIso. m3m (4/m 3 2/m) : Fd3m
3.AA.25SalammoniacNH4ClIso. 4 3 2
3.AA.25UM1998-03-Cl:TlTlCl
3.AA.25LafossaiteTl(Cl,Br)Iso. m3m (4/m 3 2/m) : Pm3m
3.AA.30Calomel(Hg2)2+Cl2Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
3.AA.30Kuzminite(Hg2+2)(Br,Cl)2Tet.
3.AA.30Moschelite(Hg2+2)I2Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
3.AA.35NeighboriteNaMgF3Orth. mmm (2/m 2/m 2/m)
3.AA.40ChlorocalciteKCaCl3Orth. mmm (2/m 2/m 2/m) : Pnma
3.AA.45KolaritePbTeCl2Orth.
3.AA.50RadhakrishnaitePbTe3(Cl,S)2Tet.
3.AA.55ChallacolloiteKPb2Cl5Mon. 2/m : P21/b
3.AA.60HephaistositeTlPb2Cl5Mon. 2/m : P21/b

Related Minerals - Dana Grouping (8th Ed.)Hide

9.1.4.2BromargyriteAgBrIso. m3m (4/m 3 2/m) : Fm3m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

8.3.2BromargyriteAgBrIso. m3m (4/m 3 2/m) : Fm3m
8.3.3Bromian ChlorargyriteAg(Cl,Br)
8.3.4IodargyriteAgIHex. 6mm : P6mm
8.3.5Miersite(Ag,Cu)IIso. 4 3m : F4 3m

Fluorescence of ChlorargyriteHide

Other InformationHide

Thermal Behaviour:
Melts at 455°C.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Industrial Uses:
Ore of silver

References for ChlorargyriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Prior and Spencer (1902) Mineralogical Magazine: 13: 174.
Schrader, Stone, and Sanford (1917) USGS Bulletin 624.
Pabst (1938) California State Division of Mines Bulletin 113: 88.
Mott and Gurney (1940) Electronic Proc. in Ionic Crystals, Oxford.
Galbraith (1941) University of Arizona Bulletin 149: 24.
Gianella (1941) University of Nevada Bulletin, Geology series 36: 56.
Northrop (1942) University of New Mexico Bulletin 6, no. 1: 103.
Palache, Charles, Harry Berman & Clifford Frondel (1951) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Seventh edition, Volume II: 11-15.

Internet Links for ChlorargyriteHide

Localities for ChlorargyriteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListShow

Mineral and/or Locality  
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