Mineralogy Database

Bandylite Mineral Data

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General Bandylite Information

Help on Chemical  Formula: Chemical Formula: CuB(OH)4Cl
Help on Composition: Composition: Molecular Weight = 177.84 gm
   Copper    35.73 %  Cu   44.73 % CuO
   Boron      6.08 %  B    19.57 % B2O3
   Hydrogen   2.27 %  H    20.26 % H2O
   Chlorine  19.94 %  Cl   19.94 % Cl
               -   %   Cl   -4.50 % -O=Cl2   
   Oxygen    35.99 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CuB(OH)4Cl
Help on Environment: Environment: Secondary origin, in a leached zone above massive iron sulfates.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1938
Help on Locality: Locality: Quetena, west of Calama, and near Taltal, Antofagasta, Chile. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Mark Chance Bandy (1900-1963), American mining engineer, mineralogist, and mineral collector, who first collected the mineral.
Help on Name Pronunciation: Name Pronunciation: Bandylite + Pronunciation Say BANDYLITE
Help on Synonym: Synonym: ICSD 30610
  PDF 12-631

Bandylite Image

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Comments: Blue crystals of bandylite on quartz.
Location: Queténa mine, Calama, Antofagásta Province, Chile. Scale: 8x5x3 cm.
© John Betts - Fine Minerals

Bandylite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.90879
Help on Cell Dimensions: Cell Dimensions: a = 6.14, c = 5.58, Z = 2; V = 210.36 Den(Calc)= 2.81
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: P 4/nmm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.59(1), 2.54(0.8), 3.08(0.8),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 0 1 1) ( 0 1 2) ( 1 1 1) ( 1 1 0) ( 2 2 1) ( 0 2 1) ( 1 0 0) ( 0 0 1)

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Physical Properties of Bandylite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Dark blue.
Help on Density: Density: 2.81
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Flexible - Flexible fragments.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: light blue

Optical Properties of Bandylite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.052 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.052 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.237,KPDmeas= 0.237,KC= 0.25
Ncalc = 1.7
Help on Optical Data: Optical Data: Uniaxial (?), a=1.641, b=1.691, bire=0.0500.

Calculated Properties of Bandylite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.75 gm/cc
note: Specific Gravity of Bandylite =2.81 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEBandylite = 16.81 barns/electron
U=PEBandylite x rElectron Density= 46.21 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bandylite is Not Radioactive

Bandylite Classification

Help on  Dana Class: Dana Class: (25)Anhydrous Borates Containing Hydroxyl or Halogen
  (25.01)Dana Type
  (25.01.04)Dana Group Teepleite Na2B(OH)4Cl P 4/nmm 4/m 2/m 2/m Bandylite CuB(OH)4Cl P 4/nmm 4/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 06.AC.35 06 - BORATES
  06.A - Monoborates
  06.AC -B(O,OH)4, without and with additional anions; 1(T), 1(T)+OH, etc.
06.AC.35 Bandylite CuB(OH)4Cl P 4/nmm 4/m 2/m 2/m

Other Bandylite Information

Help on References: References: NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Bandylite :
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

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Dana No: Strunz No: 06.AC.35





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