Charmarite-3T Mineral Data

Advertisment

Your premier supplier of quality mineral specimens from Southern Africa and the world at large

John Betts - Fine Minerals, New York. Dealers of Fine Minerals and Natural Crystal Clusters since 1989. We buy rock collections, we buy gem collections, we buy mineral collections.

Exceptional Minerals features excellent, high quality mineral specimens for sale. We also have a weekly Best Offer Mineral Auction.

For more than thirty (30) years, Excalibur Mineral Corp. has been providing private collectors, researchers, major universities and museums throughout the world with reliably identified, rare and unusual mineral samples for science an

General Charmarite-3T Information

Chemical Formula:

Mn++4Al2(CO3)(OH)12•3(H2O)

Composition:

Molecular Weight = 591.86 gm

Manganese 37.13 % Mn 47.94 % MnO

Aluminum 9.12 % Al 17.23 % Al₂O₃

Hydrogen 3.07 % H 27.39 % H₂O

Carbon 2.03 % C 7.44 % CO₂

Oxygen 48.66 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mn²⁺₄Al₂(CO₃)(OH)₁₂•3(H₂O)

Environment:

In silicate and carbonate cavities and in pegmatites in nepheline syenite. The Mn-dominant analogue of caresite and quintinite.

IMA Status:

Approved IMA 1995

Locality:

Mt. St.-Hilaire, QUE, Canada. Link to MinDat.org Location Data.

Name Origin:

Named for Charles (1917-) and Marcelle (1918-) Weber, amateur mineralogist of Guilford, CT, who contributed extensively to the knowledge of Mt. St.-Hilaire and also found the minera l.

Synonym:

IMA1992-027

Search for Charmarite-3T Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Charmarite-3T Crystallography

Axial Ratios:

a:c = 1:2.05942

Cell Dimensions:

a = 10.9885, c = 22.63, Z = 6; V = 2,366.42 Den(Calc)= 2.49

Crystal System:

Trigonal - TrapezohedralH-M Symbol (3 2) Space Group: P 3₁12

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

By Intensity(I/I_o): 7.55(1), 3.77(0.9), 2.67(0.7),

Physical Properties of Charmarite-3T

Color:

Orange brown, Pale brown, Pale blue, Colorless.

Density:

2.5

Diaphaneity:

Transparent

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

2 - Gypsum

Luster:

Vitreous (Glassy)

Optical Properties of Charmarite-3T

Gladstone-Dale:

CI meas= 0.051 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.047 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2277,KPDmeas= 0.2268,KC= 0.2389
Ncalc = 1.59 - 1.6

Optical Data:

Uniaxial (-), e=1.547, w=1.587, bire=0.0400.

Calculated Properties of Charmarite-3T

Electron Density:

Bulk Density (Electron Density)=2.47 gm/cc
note: Specific Gravity of Charmarite-3T =2.49 gm/cc.

Fermion Index:

Fermion Index = 0.0004613895
Boson Index = 0.9995386105

Photoelectric:

PE_{Charmarite-3T}= 9.61 barns/electron
U=PE_{Charmarite-3T} x rElectron Density= 23.78 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Charmarite-3T is Not Radioactive

Charmarite-3T Classification

Dana Class:

16b.06.04.05 (16b)Carbonates - Hydroxyl or Halogen

(16b.06)Dana Type

(16b.06.04)Quintinite - Charmarite Group

16b.06.04.01 Quintinite-2H Mg4Al2(OH)12CO3•4(H2O) P 6₃22 6 2 2

16b.06.04.02 Quintinite-3T Mg4Al2(OH)12CO3•4(H2O) P 3₁12,P 3₂12 3 2

16b.06.04.03 Caresite Fe4Al2(OH)12CO3•3(H2O) P 3₁12 or P 3₂12 3 2

16b.06.04.04 Charmarite-2H Mn4Al2(CO3)(OH)12•3(H2O) P 6₃22 6 2 2

16b.06.04.05 Charmarite-3T Mn4Al2(CO3)(OH)12•3(H2O) P 3₁12 3 2

Strunz Class:

05.DA.40 05 - CARBONATES (NITRATES)

05.D - Carbonates with Additional Anions, with H2O

05.DA -With medium-sized cations

05.DA.40 Charmarite-3T Mn4Al2(CO3)(OH)12•3(H2O) P 3₁12 3 2

05.DA.40 Charmarite-2H Mn4Al2(CO3)(OH)12•3(H2O) P 6₃22 6 2 2

05.DA.40 Caresite Fe4Al2(OH)12CO3•3(H2O) P 3₁12 or P 3₂12 3 2

05.DA.40 Quintinite-2H Mg4Al2(OH)12CO3•4(H2O) P 6₃22 6 2 2

05.DA.40 Quintinite-3T Mg4Al2(OH)12CO3•4(H2O) P 3₁12,P 3₂12 3 2

Other Charmarite-3T Information

References:

NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.83,p1347,1998) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Charmarite-3T :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

Search for Charmarite-3T using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Charmarite-3T :

A Bijoux Google Search for Charmarite-3T
Adam's Minerals Google Search for Charmarite-3T
Cape Minerals Google Search for Charmarite-3T
Dakota Matrix Minerals Google Search for Charmarite-3T
Excalibur Mineral Corp. Google Search for Charmarite-3T
Exceptional Minerals Google Search for Charmarite-3T
John Betts Fine Minerals Search for Charmarite-3T
McDougall Minerals Google Search for Charmarite-3T
Mineral News Website Link
Rock and Mineral Shows Google Search for Charmarite-3T
Weinrich Minerals, Inc. Google Search for Charmarite-3T

Ask about Charmarite-3T 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 Charmarite-3T Specimen Label here :

Charmarite-3T

Mn++4Al2(CO3)(OH)12•3(H2O)
Dana No: 16b.06.04.05 Strunz No: 05.DA.40
Locality:

Notes: