Diaboleite Mineral Data

Diaboleite Mineral Data +

General Diaboleite Information

Chemical Formula:

Pb2CuCl2(OH)4

Composition:

Molecular Weight = 616.88 gm

Copper 10.30 % Cu 11.60 % Cu₂O

Hydrogen 0.65 % H 5.84 % H₂O

Lead 67.18 % Pb 72.36 % PbO

Chlorine 11.49 % Cl 11.49 % Cl

- % Cl -2.59 % -O=Cl₂

Oxygen 10.37 % O

______ ______

100.00 % 98.70 % = TOTAL OXIDE

Empirical Formula:

2(Pb)2(OH)₂CuCl₂

IMA Status:

Valid Species (Pre-IMA) 1923

Locality:

Higher Pitts, Mendip Hills, Somersetshire, England. Link to MinDat.org Location Data.

Name Origin:

From the Greek dia, "difference" and the mineral Boleite.

Diaboleite Image

Images:

Diaboleite

Comments: Coarsely crystalline, blue diaboleite.
Location: Mammoth Mine, Tiger, Arizona. USA. Scale: 2.8 x 2.5 cm.
© John Veevaert

Images:

Diaboleite Yedlinite

Comments: Minute cranberry-colored rounded yedlinite crystal with blue diaboleite on yellow-brown wulfenite.
Location: Mammoth Mine, Tiger, Pinal County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Diaboleite Crystallography

Axial Ratios:

a:c = 1:0.93594

Cell Dimensions:

a = 5.87, c = 5.494, Z = 1; V = 189.31 Den(Calc)= 5.41

Crystal System:

Tetragonal - Ditetragonal PyramidalH-M Symbol (4mm) Space Group: P 4mm

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.292(1), 3.314(1), 5.507(1),

Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above

Forms: [ 0 1 10] [ 1 1 1] [ 1 0 0] [ 0 0 1]

Warning: this large pop-up is very compute intensive and may not work well with some computers.

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Cooper M A , Hawthorne F C , The Canadian Mineralogist , 33 (1995) p.1125-1129, Diaboleite, Pb2Cu(OH)4Cl2, a defect perovskite structure with stereoactive, lone-pair behavior of Pb

Physical Properties of Diaboleite

Cleavage:

[001] Perfect

Color:

Dark blue, Bright sky blue.

Density:

5.48 - 6.41, Average = 5.94

Diaphaniety:

Transparent to Translucent

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Habit:

Euhedral Crystals - Occurs as well-formed crystals showing good external form.

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Hardness:

2.5 - Finger Nail

Luster:

Adamantine

Streak:

blue

Optical Properties of Diaboleite

Dichroism (e):

pale blue or pale bluish white.

Dichroism (w):

deep blue or deep blue.

Gladstone-Dale:

CI meas= 0.143 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.058 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1691,KPDmeas= 0.1539,KC= 0.1796

Optical Data:

Uniaxial (-), e=1.85, w=1.98, bire=0.1300.

Calculated Properties of Diaboleite

Electron Density:

r_electron=4.61 gm/cc
note: r_Diaboleite=5.41 gm/cc.

Fermion Index

Fermion Index = 0.14851
Boson Index = 0.85149

Photoelectric:

PE_Diaboleite=1,215.36 barns/electron
U=PE_Diaboleite x r_electron=5,606.43 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Diaboleite is Not Radioactive

Diaboleite Classification

Dana Class:

10.6.1.1 (10)Oxyhalides and Hydroxyhalides

(10.6)where Am Bn (O,OH)p Xq

(10.6.1)Dana Group

10.6.1.1 Diaboleite Pb2CuCl2(OH)4 P 4mm 4mm

Strunz Class:

III/D.12-50 III - Halogenides

III/D - Oxi-halogenides with Pb - Bi - Sb and related compounds

III/D.12 - Boleite - Yedlinite series

III/D.12-10 Boleite KPb26Ag9Cu24Cl62(OH)48 P m3m 4/m 3 2/m

III/D.12-20 Pseudoboleite Pb5Cu4Cl10(OH)8·2(H2O) I 4/mmm 4/m 2/m 2/m

III/D.12-40 Cumengite Pb21Cu20Cl42(OH)40 I 4/mmm 4/m 2/m 2/m

III/D.12-50 Diaboleite Pb2CuCl2(OH)4 P 4mm 4mm

III/D.12-60 Chloroxiphite Pb3CuCl2(OH)2O2 P 2₁/m 2/m

III/D.12-70 Hematophanite Pb4Fe3O8(OH,Cl) P 4mm 4mm

III/D.12-80 Bideauxite Pb2AgCl3(F,OH)2 F d3m 4/m 3 2/m

III/D.12-90 Yedlinite Pb6CrCl6(O,OH)8 R 3 3

Other Diaboleite Information

References:

NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

Search for Diaboleite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Diaboleite :
AA Mineral Specimens
A-Rocks Auction
Adams Minerals
B and L Minerals
Dakota Matrix
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Minernet.it
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Diaboleite Mineral Data :

Ask about Diaboleite 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 Español

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

Diaboleite

Pb2CuCl2(OH)4
Dana No: 10.6.1.1 Strunz No: III/D.12-50
Locality:

Notes: