Chambersite Mineral Data (original) (raw)

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 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 - 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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Ask about Chambersite here :
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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: