Chloroxiphite Mineral Data
General Chloroxiphite Information
Chemical Formula:
Pb3CuCl2(OH)2O2
Composition:
Molecular Weight = 822.06 gm
Copper 7.73 % Cu 9.68 % CuO
Hydrogen 0.25 % H 2.19 % H2 O
Lead 75.61 % Pb 81.45 % PbO
Chlorine 8.63 % Cl 8.63 % Cl
- %
Cl -1.95 % -O=Cl2
Oxygen 7.78 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
Pb3 CuCl2 (OH)2 O2
Environment:
Secondary mineral associated with lead- and copper-bearing pods in Mn-Fe deposits developed along fissures in dolomitic conglomerate and limestone.
IMA Status:
Valid Species (Pre-IMA) 1923
Locality:
Higher Pitts, Mendip Hills, Somersetshire, England. Link to MinDat.org Location Data.
Name Origin:
Named fom the Greek for green and blade or straight sword, for the typical crystal habit.
Synonym:
ICSD 200123
PDF 33-467
Chloroxiphite Image
Images:
Images:
Chloroxiphite Crystallography
Axial Ratios:
a:b:c =1.8187:1:1.1639
Cell Dimensions:
a = 10.458, b = 5.75, c = 6.693, Z = 2; beta = 97.79° V = 398.76 Den(Calc)= 6.85
Crystal System:
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21 /m
X Ray Diffraction:
By Intensity(I/Io ): 2.872(1), 2.829(0.78), 10.361(0.69),
Physical Properties of Chloroxiphite
Cleavage:
{001} Perfect, {010} Distinct
Color:
Dull olive green, Pistachio green.
Density:
6.76
Diaphaneity:
Transparent to translucent
Fracture:
Brittle - Generally displayed by glasses and most non-metallic minerals.
Habit:
Tabular - Form dimensions are thin in one direction.
Hardness:
2.5 - Finger Nail
Luster:
Adamantine - Resinous
Streak:
light yellow green
Optical Properties of Chloroxiphite
Gladstone-Dale:
CI meas = -0.128 (Poor) - where the CI = (1-KPDmeas /KC ) CI calc = -0.114 (Poor) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.1776,KPDmeas = 0.18,KC = 0.1595 Ncalc = 2.08 - 2.09
Optical Data:
Biaxial (-), a=2.16, b=2.24, g=2.25, bire=0.0900, 2V(Calc)=36, 2V(Meas)=70.
Pleochroism (x):
bright emerald green.
Pleochroism (y):
yellowish brown.
Calculated Properties of Chloroxiphite
Electron Density:
Bulk Density (Electron Density)=5.72 gm/cc note: Specific Gravity of Chloroxiphite =6.85 gm/cc.
Fermion Index:
Fermion Index = 0.16 Boson Index = 0.84
Photoelectric:
PEChloroxiphite =1,395.54 barns/electronU=PEChloroxiphite x r Electron Density=7,977.23 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Chloroxiphite is Not Radioactive
Chloroxiphite Classification
Dana Class:
10.06.04.01 (10) Oxyhalides and Hydroxyhalides
(10.06) where Am Bn (O,OH)p Xq
(10.06.04) Dana Group
10.06.04.01 Chloroxiphite Pb3CuCl2(OH)2O2 P 21 /m 2/m
Strunz Class:
03.DB.30 03 - HALIDES
03.D - Oxyhalides, Hydroxyhalides and Related Double Halides
03.DB -With Pb, Cu, etc.
03.DB.30 Chloroxiphite Pb3CuCl2(OH)2O2 P 21 /m 2/m
Other Chloroxiphite Information
References:
NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
See Also:
Links to other databases for Chloroxiphite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST
Search for Chloroxiphite using:
[AOL ]
[Bing ]
[Dog Pile ]
[GeoScienceWorld ]
[HotBot ]
[Ixquick ]
[Lycos ]
[MAMMA ]
[Scirus ]
[Teoma ]
[WebCrawler ]
[Wikipedia ]
[YAHOO ]
Visit our Advertisers for Chloroxiphite :
Ask about Chloroxiphite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in
Espa�ol
Print or Cut-and-Paste your Chloroxiphite Specimen Label here :
Chloroxiphite
Pb3CuCl2(OH)2O2
Dana No: 10.06.04.01 Strunz No: 03.DB.30
Locality:
Notes:
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.