Chambersite Mineral Data

Chambersite Mineral Data
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General Chambersite Information

Help on Chemical Formula: Chemical Formula: Mn3B7O13Cl
Help on Composition: Composition: Molecular Weight = 483.93 gm
   Manganese  34.06 %  Mn   43.98 % MnO
   Boron      15.64 %  B    50.35 % B2O3
   Chlorine    7.33 %  Cl    7.33 % Cl
                -   %   Cl   -1.65 % -O=Cl2   
   Oxygen     42.98 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+3B7O13Cl
Help on Environment: Environment: Insoluble borate obtained from mining rock salt in a shallow salt dome mine.
Help on IMA Status: IMA Status: Approved IMA 1962
Help on Locality: Locality: Barber's Hill salt dome, Chambers County, Texas, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Chambersite + Pronunciation Say CHAMBERSITE
Help on Synonym: Synonym: ICSD 402906
  PDF 14-638
 

Chambersite Image

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Chambersite

Comments: Tetragonal crystals of chambersite extracted from salt dome deposits.
Location: Barkers Hill, Mont Belvieu, Chambers County, Texas, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Chambersite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1:1:1.4124
Help on Cell Dimensions: Cell Dimensions: a = 8.68, b = 8.68, c = 12.26, Z = 4; V = 923.70 Den(Calc)= 3.48
Help on Crystal System: Crystal System: Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: P ca21
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.07(1), 2.08(0.6), 2.74(0.6),
Click Here for Large Chambersite Structure Window Crystal Structure:

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Kubel F , Crottaz O , Zeitschrift fur Kristallographie , 211 (1996) p.924-924, Crystal structure of manganese chlorine boracite, Mn3B7O13Cl, Locality: synthetic

 

Physical Properties of Chambersite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless, Purple red.
Help on Density: Density: 3.49
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Habit: Habit: Pseudo Tetragonal - Crystals show a tetragonal shape.
Help on Hardness: Hardness: 7 - Quartz
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Chambersite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.031 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.028 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.212,KPDmeas= 0.2114,KC= 0.218
Ncalc = 1.76
Help on Optical Data: Optical Data: Biaxial (+), a=1.732, b=1.737, g=1.744, bire=0.0120, 2V(Calc)=82, 2V(Meas)=83.
 

Calculated Properties of Chambersite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.32 gm/cc
note: Specific Gravity of Chambersite =3.48 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEChambersite = 9.46 barns/electron
U=PEChambersite x rElectron Density= 31.42 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Chambersite is Not Radioactive
 

Chambersite Classification
Help on Dana Class: Dana Class: 25.06.01.03 (25)Anhydrous Borates Containing Hydroxyl or Halogen
  (25.06)Dana Type
  (25.06.01)Boracite Group (Orthorhombic: Rca21)
 
25.06.01.01 Boracite Mg3B7O13Cl P ca21 mm2
 
25.06.01.02 Ericaite (Fe,Mg,Mn)3B7O13Cl P ca21 mm2
 
25.06.01.03 Chambersite Mn3B7O13Cl P ca21 mm2
Help on Strunz Class: Strunz Class: 06.GA.05 06 - BORATES
  06.G - Heptaborates and other Megaborates
  06.GA -Tekto-heptaborates
 
06.GA.05 Boracite Mg3B7O13Cl P ca21 mm2
 
06.GA.05 Chambersite Mn3B7O13Cl P ca21 mm2
 
06.GA.05 Ericaite (Fe,Mg,Mn)3B7O13Cl P ca21 mm2
 

Other Chambersite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Chambersite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info

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

Chambersite

Mn3B7O13Cl
Dana No: 25.06.01.03 Strunz No: 06.GA.05
Locality:

 

Notes: