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Chloroxiphite

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Formula:
Pb
 
3
CuO
 
2
Cl
 
2
(OH)
 
2
System:MonoclinicColour:Dull olive green
Lustre:Adamantine, ResinousHardness:
Name:From the Greek χλωρός, green and ζιφος, a blade or sword, in allusion to its color and crystal habit.
This page provides mineralogical data about Chloroxiphite.

Classification of Chloroxiphite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:3/D.12-60
Nickel-Strunz 10th (pending) edition ID:3.DB.30

3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
B : With Pb, Cu, etc.
Dana 8th edition ID:10.6.4.1

10 : OXYHALIDES AND HYDROXYHALIDES
6 : AmBn(O,OH)pXq
Hey's CIM Ref.:8.8.15

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
8 : Halides of Pb
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Type Occurrence of Chloroxiphite

Type Locality:Higher Pitts Mine, Priddy, Mendip Hills, Somerset, England, UK
Year of Discovery:1923
Associated Minerals at type locality:
MendipiteDiaboleite

Physical Properties of Chloroxiphite

Lustre:Adamantine, Resinous
Colour:Dull olive green
Streak:Light green yellow
Hardness (Mohs):
Tenacity:Very brittle
Cleavage:Perfect
On {_101} perfect; {100} distinct.
Density (measured):6.76 - 6.93 g/cm3
Density (calculated):7.07 g/cm3

Crystallography of Chloroxiphite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/m
Cell Parameters:a = 6.6972(8) Å, b = 5.7538(5) Å, c = 10.4686(14) Å
β = 97.747(10)°
Ratio:a:b:c = 1.164 : 1 : 1.819
Unit Cell Volume:V 399.72 ų
Morphology:Crystals bladed, elongated [010] and flattened {_101}. Subparallel groups. {_101} roughly striated [010].

Optical Data of Chloroxiphite

Type:Biaxial (-)
RI values: nα = 2.160 nβ = 2.240 nγ = 2.250
2V:Measured: 70° , Calculated: 36°
Maximum Birefringence:δ = 0.090

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:extreme
Pleochroism:Visible
Comments:X ≈ perpendicular to {_101}
Y = brown
Z = b = green

Chemical Properties of Chloroxiphite

Formula:
Pb
 
3
CuO
 
2
Cl
 
2
(OH)
 
2
Simplified for copy/paste:Pb3CuO2Cl2(OH)2
Essential elements:Cl, Cu, H, O, Pb
All elements listed in formula:Cl, Cu, H, O, Pb

Relationship of Chloroxiphite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
3.DB.Rickturnerite
Pb
 
7
O
 
4
[Mg(OH)
 
4
](OH)Cl
 
3
3.DB.05Diaboleite
Pb
 
2
CuCl
 
2
(OH)
 
4
3.DB.10Pseudoboleite
Pb
 
31
Cu
 
24
Cl
 
62
(OH)
 
48
3.DB.15Boleite
KPb
 
26
Ag
 
9
Cu
 
24
(OH)
 
48
Cl
 
62
3.DB.20Cumengeite
Pb
 
21
Cu
 
20
Cl
 
42
(OH)
 
40
· 6H
 
2
O
3.DB.25Bideauxite
Pb
 
2
AgCl
 
3
(F,OH)
 
2
3.DB.35Hematophanite
Pb
 
4
Fe
 
3
O
 
8
(OH,Cl)
3.DB.40Asisite
Pb
 
7
SiO
 
9
Cl
 
2
3.DB.40Parkinsonite
Pb
 
7
MoO
 
9
Cl
 
2
3.DB.45Murdochite
PbCu
 
6
O
 
8-x
(Cl,Br)
 
2x
where x<=0.5
3.DB.50Yedlinite
Pb
 
6
Cr
3+
 
Cl
 
6
(O,OH,H
 
2
O)
 
8
Related Minerals - Hey's Index Grouping:

- +
8.8.1Abhurite
Sn
 
21
Cl
 
16
(OH)
 
14
O
 
6
8.8.2Matlockite
PbFCl
8.8.3Laurelite
Pb
 
7
F
 
12
Cl
 
2
8.8.4Cotunnite
PbCl
 
2
8.8.5Mendipite
Pb
 
3
Cl
 
2
O
 
2
8.8.6Damaraite
Pb
 
3
Cl(OH)O
 
2
8.8.7Laurionite
PbCl(OH)
8.8.8Paralaurionite
PbCl(OH)
8.8.9Penfieldite
Pb
 
2
Cl
 
3
(OH)
8.8.10Fiedlerite
Pb
 
3
FCl
 
4
(OH) · H
 
2
O
8.8.11Blixite
Pb
 
2
(O,OH)
 
2
Cl
8.8.12Pseudocotunnite
K
 
2
PbCl
 
4
8.8.13Diaboleite
Pb
 
2
CuCl
 
2
(OH)
 
4
8.8.14Pseudoboleite
Pb
 
31
Cu
 
24
Cl
 
62
(OH)
 
48
8.8.17Bideauxite
Pb
 
2
AgCl
 
3
(F,OH)
 
2
8.8.18Boleite
KPb
 
26
Ag
 
9
Cu
 
24
(OH)
 
48
Cl
 
62
8.8.19Aravaipaite
Pb
 
3
F
 
3
[AlF
 
6
] · H
 
2
O
8.8.20Yedlinite
Pb
 
6
Cr
3+
 
Cl
 
6
(O,OH,H
 
2
O)
 
8
8.8.21Kolarite
PbTeCl
 
2
8.8.22Hematophanite
Pb
 
4
Fe
 
3
O
 
8
(OH,Cl)

Other Names for Chloroxiphite

Synonyms:
Chloro-ziphite
Other Languages:
German:Chloroxiphit
Russian:Хлороксифит
Simplified Chinese:绿铜铅矿
Spanish:Chloroxiphita
Traditional Chinese:綠銅鉛礦

Other Information

Other Information:Soluble in nitric acid.
Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Chloroxiphite

Reference List:

- +
Spencer (1923) Mineralogical Magazine: 20: 76.

American Mineralogist (1924): 9: 96.

Palache, C., Berman, H. & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged

Mineralogical Magazine: 41: 357-361.

Slidra, O.I., S.V.Krivivichev, R.W. Turner, & M.S. Rumsey (2008). Chloroxiphite Pb3CuO2(OH)2Cl2: structure refinement and description in terms of oxocentred OPb4 tetrahedra. Mineralogical Magazine 72(3), 793-798(2008)

Internet Links for Chloroxiphite

Search Engines:
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  • Look for Chloroxiphite on Wikipedia
  • Look for Chloroxiphite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Chloroxiphite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
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  • Localities for Chloroxiphite

    The 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.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    China
     
    • Xinjiang Autonomous Region
      • Hami Prefecture (Kumul Prefecture; Qumul Prefecture)
        • Hami Co. (Kumul Co.; Qumul Co.)
    http://pubs.usgs.gov/of/2005/1060/PorCu.txt
    Germany
     
    • Saxony-Anhalt
      • Mansfeld Basin
        • Hettstedt
    Knoll,H. (2003). Chlorixiphit, Calumetit, Boleit und Kassiterit aus dem Mansfelder Kupferschiefer. (Bem. Eigenfund) Lapis, Jg.28, Nr.11, S.42-43.
    Greece
     
    • Attikí Prefecture (Attica; Attika)
      • Lavrion District (Laurion; Laurium)
    Schnorrer, G. & Breitenbach, H. (1996): Lavrion: Neufunde aus dem antiken Bergbau und in historischen Schlacken. Lapis, 21 (1), 45-48; 62.; Gelaude, Piet, van Kalmthout, Piet and Rewitzer, Christian, Laurion: The Minerals in the Ancient Slags
    UK
     
    • England
      • Bristol
        • Westbury on Trym
    BMS Database
      • Cornwall
        • St Agnes District
          • Crantock
    BMS Newsletter 79, March 2010 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
      • Somerset
        • Cranmore
    Turner, R.W. and Rumsey, M.S. (2010): Mineral Relationships in the Mendip Hills. Journal of the Russell Society, vol 13, pp 3-46; Siidra, O.I., Krivovichev, S.V., Turner, R.W. and Rumsey, M.S .(2008). Chloroxiphite Pb3CuO2(OH)2Cl2 structure refinement and description in terms of oxocentered OPb4 tetrahedra. Mineralogical Magazine, 72, 793-798; Turner, R.W., (2006) A Mechanism for the formation of the Mineralised Mn Deposits at Merehead Quarry, Cranmore, Somerset, England. Min. Mag. vol. 70, no. 6, pp 629 - 653; Mineralogical Magazine 1977 41 : 410-411
        • Holwell
    BMS Database
        • Mendip Hills
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 57.
          • Priddy
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 83, 85; Mineralogical Magazine (1923): 20, 67-92 (the mineral 75-77); Clark, 1993 - "Hey's Mineral Index"] [MinRec 27:253]
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