Chambersite Mineral Data

Chambersite Mineral Data +

We specialise in top quality, fine minerals from Morocco, Namibia,
South Africa, Pakistan, Democratic Republic of Congo (ZaÃƒï¿½Ã‚Â¯re) and China
Worldwide Fine Minerals by B & C GOBIN

General Chambersite Information

Chemical Formula:

Mn3B7O13Cl

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

Empirical Formula:

Mn²⁺₃B₇O₁₃Cl

Environment:

Insoluble borate obtained from mining rock salt in a shallow salt dome mine.

IMA Status:

Approved IMA 1962

Locality:

Barber's Hill salt dome, Chambers County, Texas, USA. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

ICSD 402906

PDF 14-638

Chambersite Image

Images:

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

Axial Ratios:

a:b:c =1:1:1.4124

Cell Dimensions:

a = 8.68, b = 8.68, c = 12.26, Z = 4; V = 923.70 Den(Calc)= 3.48

Crystal System:

Orthorhombic - PyramidalH-M Symbol (mm2) Space Group: P ca2₁

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

By Intensity(I/I_o): 3.07(1), 2.08(0.6), 2.74(0.6),

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

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

Cleavage:

None

Color:

Colorless, Purple red.

Density:

3.49

Diaphaniety:

Transparent to Translucent

Fracture:

Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.

Habit:

Euhedral Crystals - Occurs as well-formed crystals showing good external form.

Habit:

Pseudo Tetragonal - Crystals show a tetragonal shape.

Hardness:

7 - Quartz

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Chambersite

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

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

Electron Density:

r_electron=3.32 gm/cc
note: r_Chambersite=3.48 gm/cc.

Fermion Index

Fermion Index = 0.03132
Boson Index = 0.96868

Photoelectric:

PE_Chambersite= 9.46 barns/electron
U=PE_Chambersite x r_electron= 31.42 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Chambersite is Not Radioactive

Chambersite Classification

Dana Class:

25.6.1.3 (25)Anhydrous Borates Containing Hydroxyl or Halogen

(25.6)Dana Type

(25.6.1)Boracite Group (Orthorhombic: Rca21)

25.6.1.1 Boracite Mg3B7O13Cl P ca2₁ mm2

25.6.1.2 Ericaite (Fe,Mg,Mn)3B7O13Cl P ca2₁ mm2

25.6.1.3 Chambersite Mn3B7O13Cl P ca2₁ mm2

Strunz Class:

V/L.04-30 V - Nitrates, Carbonates and Borates

V/L - Shelly borates with [BO2]1- to [B6O10]2-

V/L.04 - Boracite - Congolite series

V/L.04-10 Boracite Mg3B7O13Cl P ca2₁ mm2

V/L.04-20 Ericaite (Fe,Mg,Mn)3B7O13Cl P ca2₁ mm2

V/L.04-30 Chambersite Mn3B7O13Cl P ca2₁ mm2

V/L.04-35 Trembathite (Mg,Fe)3B7O13Cl R 3c 3m

V/L.04-40 Congolite (Fe,Mg,Mn)3B7O13Cl R 3c 3m

Other Chambersite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)

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

Search for Chambersite using:

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

Visit our Advertisers for Chambersite :

AA Mineral Specimens

B & L Fine Minerals

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

MineralsWeb Fine Minerals

The GeoZone

Wrights Rock Shop

Translate Chambersite Mineral Data :

Ask about Chambersite 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 Chambersite Specimen Label here :

Chambersite

Mn3B7O13Cl
Dana No: 25.6.1.3 Strunz No: V/L.04-30
Locality:

Notes: