Caledonite Mineral Data

Caledonite Mineral Data +

General Caledonite Information

Chemical Formula:

Pb5Cu2(CO3)(SO4)3(OH)6

Composition:

Molecular Weight = 1,613.34 gm

Copper 7.88 % Cu 8.87 % Cu₂O

Hydrogen 0.37 % H 3.35 % H₂O

Lead 64.21 % Pb 69.17 % PbO

Carbon 0.74 % C 2.73 % CO₂

Sulfur 5.96 % S 14.89 % SO₃

Oxygen 20.83 % O

______ ______

100.00 % 99.01 % = TOTAL OXIDE

Empirical Formula:

Pb₅Cu₂(CO₃)(SO₄)₃(OH)₆

Environment:

Secondary, weathered zone of lead and copper ores.

IMA Status:

Valid Species (Pre-IMA) 1932

Locality:

Mammoth Mine at Tiger, Arizona. Link to MinDat.org Location Data.

Name Origin:

Named after Caledonia, the historical name of Scotland.

Synonym:

ICSD 2622

PDF 29-565

Caledonite Image

Images:

Caledonite

Comments: Transparent, blue caledonite crystals.
Location: Mammoth mine, Tiger, Pinal County, Arizona, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Caledonite Crystallography

Axial Ratios:

a:b:c =2.8122:1:0.9189

Cell Dimensions:

a = 20.088, b = 7.143, c = 6.564, Z = 2; V = 941.86 Den(Calc)= 5.69

Crystal System:

Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: P mn2₁

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

By Intensity(I/I_o): 1.849(1), 3.09(0.8), 4.6(0.8),

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: [ 1 1 1] [ 1 0 1] [ 0 1 0] [ 1 4 0] [ 1 2 0] [ 1 3 1] [ 1 0 0]

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

Giacovazzo C , Menchetti S , Scordari F , Acta Crystallographica, Section B , 29 (1973) p.1986-1990, The crystal structure of caledonite, Cu2Pb5(SO4)3CO3(OH)6

Physical Properties of Caledonite

Cleavage:

[001] Perfect, [100] Distinct

Color:

Blue, Blue green, Green, Dark green.

Density:

5.7 - 6.4, Average = 6.05

Diaphaniety:

Transparent to Translucent

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Habit:

Striated - Parallel lines on crystal surface or cleavage face.

Hardness:

2.5-3 - Finger Nail-Calcite

Luminescence:

None.

Luster:

Vitreous - Greasy

Streak:

greenish white

Optical Properties of Caledonite

Gladstone-Dale:

CI meas= 0.086 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.028 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1519,KPDmeas= 0.1429,KC= 0.1563

Optical Data:

Biaxial (-), a=1.818, b=1.866, g=1.909, bire=0.0910, 2V(Calc)=84, 2V(Meas)=85. Dispersion none.

Pleochroism (x):

none.

Pleochroism (y):

none.

Pleochroism (z):

Calculated Properties of Caledonite

Electron Density:

r_electron=4.91 gm/cc
note: r_Caledonite=5.69 gm/cc.

Fermion Index

Fermion Index = 0.14254
Boson Index = 0.85746

Photoelectric:

PE_Caledonite=1,146.78 barns/electron
U=PE_Caledonite x r_electron=5,629.99 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Caledonite is Not Radioactive

Caledonite Classification

Dana Class:

32.3.2.1 (32)Compound Sulfates

(32.3)(anhydrous) with poly-anionic formula

(32.3.2)Dana Group

32.3.2.1 Caledonite Pb5Cu2(CO3)(SO4)3(OH)6 P mn2₁ mm2

Strunz Class:

VI/B.09-10 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/B - Waterfree sulfates [SO4]2- with unfamiliar anions. cations of medium size

VI/B.09 - Caledonite series

VI/B.09-10 Caledonite Pb5Cu2(CO3)(SO4)3(OH)6 P mn2₁ mm2

Other Caledonite Information

References:

NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)

Search for Caledonite using:

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

Visit our Advertisers for Caledonite :
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 Caledonite Mineral Data :

Ask about Caledonite 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 Caledonite Specimen Label here :

Caledonite

Pb5Cu2(CO3)(SO4)3(OH)6
Dana No: 32.3.2.1 Strunz No: VI/B.09-10
Locality:

Notes: