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Chloroxiphite

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Formula:
Pb3CuO2Cl2(OH)2
System:
Monoclinic
Colour:
Dull olive green
Lustre:
Adamantine, Resinous
Hardness:
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

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
3.DB.30

3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
B : With Pb, Cu, etc.
10.6.4.1

10 : OXYHALIDES AND HYDROXYHALIDES
6 : AmBn(O,OH)pXq
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

Year of Discovery:
1923
Associated Minerals at Type Locality:

Physical Properties of Chloroxiphite

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

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°
Max Birefringence:
δ = 0.090
Image 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:
Pb3CuO2Cl2(OH)2
Essential elements:
All elements listed in formula:

Relationship of Chloroxiphite to other Species

3.DB.RickturneritePb7O4[Mg(OH)4](OH)Cl3
3.DB.05DiaboleitePb2CuCl2(OH)4
3.DB.10PseudoboleitePb31Cu24Cl62(OH)48
3.DB.15BoleiteKPb26Ag9Cu24(OH)48Cl62
3.DB.20CumengeitePb21Cu20Cl42(OH)40 · 6H2O
3.DB.25BideauxitePb2AgCl3(F,OH)2
3.DB.35HematophanitePb4Fe3O8(OH,Cl)
3.DB.40AsisitePb7SiO9Cl2
3.DB.40ParkinsonitePb7MoO9Cl2
3.DB.45MurdochitePbCu6O8-x(Cl,Br)2x where x<=0.5
3.DB.50YedlinitePb6Cr3+Cl6(O,OH,H2O)8
8.8.1AbhuriteSn21Cl16(OH)14O6
8.8.2MatlockitePbFCl
8.8.3LaurelitePb7F12Cl2
8.8.4CotunnitePbCl2
8.8.5MendipitePb3Cl2O2
8.8.6DamaraitePb3Cl(OH)O2
8.8.7LaurionitePbCl(OH)
8.8.8ParalaurionitePbCl(OH)
8.8.9PenfielditePb2Cl3(OH)
8.8.10FiedleritePb3FCl4(OH) · H2O
8.8.11BlixitePb2(O,OH)2Cl
8.8.12PseudocotunniteK2PbCl4
8.8.13DiaboleitePb2CuCl2(OH)4
8.8.14PseudoboleitePb31Cu24Cl62(OH)48
8.8.17BideauxitePb2AgCl3(F,OH)2
8.8.18BoleiteKPb26Ag9Cu24(OH)48Cl62
8.8.19AravaipaitePb3F3[AlF6] · H2O
8.8.20YedlinitePb6Cr3+Cl6(O,OH,H2O)8
8.8.21KolaritePbTeCl2
8.8.22HematophanitePb4Fe3O8(OH,Cl)

Other Names for Chloroxiphite

Name in Other Languages:
Simplified Chinese:绿铜铅矿
Traditional Chinese:綠銅鉛礦

Other Information

Other Information:
Soluble in nitric acid.
Health Risks:
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

Localities for Chloroxiphite

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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]
Mineral and/or Locality  
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