Boleite Mineral Data (original) (raw)

General Boleite Information

Chemical Formula:

KPb26Ag9Cu24Cl62(OH)48

Composition:

Molecular Weight = 10936.64 gm

Potassium 0.36 % K 0.43 % K2O

Copper 13.94 % Cu 15.70 % Cu2O

Silver 8.88 % Ag 9.54 % Ag2O

Hydrogen 0.44 % H 3.95 % H2O

Lead 49.26 % Pb 53.06 % PbO

Chlorine 20.10 % Cl 20.10 % Cl

- % Cl -4.54 % -O=Cl2

Oxygen 7.02 % O

______ ______

100.00 % 98.24 % = TOTAL OXIDE

Empirical Formula:

KAg9Cu24Pb26Cl62(OH)48

Environment:

Sedimentary copper deposits. The fugitive presence of K in the formula was determined by microprobe.

IMA Status:

Valid Species (Pre-IMA) 1891

Locality:

Boleo, Baja California, Mexico. Link to MinDat.org Location Data.

Name Origin:

Named after is locality.

Name Pronunciation:

Boleite

Synonym:

ICSD 18002

PDF 27-1206

Percylite

Boleite Image

Images:

	Boleite Comments: Floater crystal of deep, inky blue boleite with interpenetration twinning. Location: Amelia Mine, Santa Rosalia, Baja California, Mexico.Scale: 0.7 cm. © John Veevaert

Images:

Boleite Crystallography

Cell Dimensions:

a = 15.29, Z = 1; V = 3,574.56 Den(Calc)= 5.08

Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: P m3m

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

By Intensity(I/Io): 4.415(1), 3.821(0.8), 2.702(0.6),

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Crystal Structure:

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| | Cooper M A , Hawthorne F C , The Canadian Mineralogist , 38 (2000) p.801-808, Boleite: Resolution of the formula, KPb26Ag9Cu24Cl62(OH)48 | | ------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Boleite

Cleavage:

{001} Perfect, {101} Good

Color:

Indigo blue, Light blue.

Density:

4.8 - 5.1, Average = 4.94

Diaphaneity:

Transparent to subtranslucent

Fracture:

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

Habit:

Pseudo Cubic - Crystals show a cubic outline.

Hardness:

3-3.5 - Calcite-Copper Penny

Luster:

Vitreous - Pearly

Streak:

light green

Optical Properties of Boleite

Gladstone-Dale:

CI meas= -0.055 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.028 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2067,KPDmeas= 0.2121,KC= 0.2011
Ncalc = 1.97 - 2.03

Optical Data:

Isotropic, n=2.05.

Calculated Properties of Boleite

Electron Density:

Bulk Density (Electron Density)=4.42 gm/cc
note: Specific Gravity of Boleite =5.08 gm/cc.

Fermion Index:

Fermion Index = 0.1
Boson Index = 0.9

Photoelectric:

PEBoleite = 900.94 barns/electron
U=PEBoleite x relectron=3,980.61 barns/cc.

Radioactivity:

GRapi = 4.47 (Gamma Ray American Petroleum Institute Units)
Concentration of Boleite per GRapi unit = 22.36 (%)

Estimated Radioactivity from Boleite - barely detectable

Boleite Classification

Dana Class:

10.06.06.01 (10)Oxyhalides and Hydroxyhalides

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

(10.06.06)Dana Group

10.06.06.01 Boleite KPb26Ag9Cu24Cl62(OH)48 P m3m 4/m 3 2/m

Strunz Class:

03.DB.15 03 - HALIDES

03.D - Oxyhalides, Hydroxyhalides and Related Double Halides

03.DB -With Pb, Cu, etc.

03.DB.15 Boleite KPb26Ag9Cu24Cl62(OH)48 P m3m 4/m 3 2/m

Other Boleite Information

References:

NAME( Duda&Rejl90) PHYS. PROP.(AmMin, v 86, p 770) OPTIC PROP.(Dana8)

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

Boleite

KPb26Ag9Cu24Cl62(OH)48
Dana No: 10.06.06.01 Strunz No: 03.DB.15
Locality:

Notes: