Ganterite Mineral Data (original) (raw)

General Ganterite Information

Help on Chemical Formula: Chemical Formula:

[Ba0.5(Na,K)0.5]Al2(Si2.5Al1.5O10)(OH)2

Help on Composition: Composition:

Molecular Weight = 438.39 gm

Potassium 2.50 % K 3.01 % K2O

Barium 13.78 % Ba 15.39 % BaO

Sodium 1.42 % Na 1.91 % Na2O

Magnesium 0.50 % Mg 0.83 % MgO

Titanium 0.44 % Ti 0.73 % TiO2

Aluminum 19.20 % Al 36.28 % Al2O3

Iron 0.51 % Fe 0.66 % FeO

Silicon 17.43 % Si 37.28 % SiO2

Hydrogen 0.43 % H 3.88 % H2O

Oxygen 43.80 % O

______ ______

100.00 % 99.96 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Ba0.44K0.28Na0.27Al1.84Mg0.09Fe2+0.04Ti0.04Si2.72Al1.28O10.11(OH)1.89

Help on Environment: Environment:

Rock-forming mica found in bands and lenses of white-mica schist, and in a leucocratic zoisite-celsian gneiss. Ba-dominant muscovite.

Help on IMA Status: IMA Status:

Approved IMA 2003 (Dana # Added)

Help on Locality: Locality:

Berisal Complex, Simplon, Switzerland. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for Gantertal Valley region in which the mineral was found.

Help on Synonym: Synonym:

IMA2000-033

Oellacherite

Sandbergite

Ganterite Image

Click Here for Larger Ganterite Image in a New Browser Window Images:

Click Here for Larger Ganterite Image Ganterite Comments: Black and white thin-section micrograph of ganterite in white mica schist (sample SS9787) (S.Gt: synkinematic ganterite; P.Gt: postkinematic ganterite. (CanMin 41:1284). Location: Metamorphosed basement rocks from the Berisal Complex, Simplon Region, Switzerland.Scale: See Image. © Canadian Mineralogist

Click Here for Larger Ganterite Image in a New Browser Window Images:

Click Here for Larger Ganterite Image Ganterite Comments: BSE image of thin-section showing ganterite (G) portion of a larger muscovite (M) grain. The lighter color corresponds to greater heavy element (Ba) contents. AmMin, v92, p703. Location: Lincoln Hill dumortierite deposit in the Humboldt Range located near Oreana, Pershing County, Nevada.Scale: Picture size 300 µm. © American Mineralogist

Ganterite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =0.5768:1:2.2114

Help on Cell Dimensions: Cell Dimensions:

a = 5.2068, b = 9.027, c = 19.963, Z = 4; beta = 95.87° V = 933.38 Den(Calc)= 3.12

Help on Crystal System: Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 2.571(1)(202,131), 2.602(0.95)(130,131), 1.504(0.91)(060,2.0.10),3.737(0.77)(023), 3.887(0.76)(113), 3.495(0.71)(114), 4.481(0.71)(110),

Physical Properties of Ganterite

Help on Cleavage: Cleavage:

{001} Perfect

Help on Color: Color:

Light gray, Silver.

Help on Diaphaneity: Diaphaneity:

Transparent

Help on Fracture: Fracture:

Flexible - Flexible fragments.

Help on Habit: Habit:

Micaceous - Platy texture with "flexible" plates.

Help on Hardness: Hardness:

4-4.5 - Between Fluorite and Apatite

Help on Luster: Luster:

Vitreous (Glassy)

Help on Streak: Streak:

white

Optical Properties of Ganterite

Help on Gladstone-Dale: Gladstone-Dale:

CI calc= 0.021 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1967,KC= 0.2008
Ncalc = 1.63

Help on Optical Data: Optical Data:

Biaxial (-), a=1.6, b=1.619, g=1.622, bire=0.0220

Calculated Properties of Ganterite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=3.02 gm/cc
note: Specific Gravity of Ganterite =3.12 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Help on Photoelectric: Photoelectric:

PEGanterite = 58.78 barns/electron
U=PEGanterite x relectron= 177.76 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 34.94 (Gamma Ray American Petroleum Institute Units)
Concentration of Ganterite per GRapi unit = 2.86 (%)

Estimated Radioactivity from Ganterite - barely detectable

Ganterite Classification

Help on Dana Class: Dana Class:

71.02.02c.07 (71)Phyllosilicate Sheets of Six-Membered Rings

(71.02)with 2:1 Layers

(71.02.02c)Mica Group (Margarite subgroup)

71.02.02c.01 Margarite CaAl2(Al2Si2)O10(OH)2 C 2/c 2/m

71.02.02c.02 Clintonite Ca(Mg,Al)3(Al3Si)O10(OH)2 C 2/m 2/m

71.02.02c.03 Bityite CaLiAl2(AlBeSi2)O10(OH)2 C 2/c 2/m

71.02.02c.04 Anandite (Ba,K)(Fe,Mg)3(Si,Al,Fe)4O10(S,OH)2 C 2/m 2/m

71.02.02c.05 Kinoshitalite (Ba,K)(Mg,Mn,Al)3Si2Al2O10(OH)2 C 2/m 2/m

71.02.02c.06 Ferrokinoshitalite! (Ba,K)(Fe,Mg)3(Si2Al2)O10(OH,F)2 C 2/m 2/m

71.02.02c.07 Ganterite! [Ba0.5(Na,K)0.5]Al2(Si2.5Al1.5O10)(OH)2 C 2/c 2/m

71.02.02c.08 Oxykinoshitalite! (Ba,K)(Mg,Fe,Ti)3(Si,Al)4O10O2 C 2/m 2/m

Help on Strunz Class: Strunz Class:

09.EC.15 09 - SILICATES (Germanates)

09.E - Phyllosilicates

09.EC -Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets

09.EC.15 Boromuscovite KAl2(Si3B)O10(OH,F)2 C 2/m 2/m

09.EC.15 Celadonite K(Mg,Fe)(Fe,Al)[Si4O10](OH)2 C 2/m 2/m

09.EC.15 Chernykhite (Ba,Na)V,Al)2(Si,Al)4O10(OH)2 C 2/c 2/m

09.EC.15 Chromphyllite! (K,Ba)(Cr,Al)2[AlSi3O10](OH,F)2 C 2c 2/m

09.EC.15 Glauconite (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2 C 2/m 2/m

09.EC.15 Aluminoceladonite! KAl(Mg,Fe)[]Si4O10(OH)2 2/m

09.EC.15 Ferroaluminoceladonite! K2Fe2Al2Si8O20(OH)4 C 2/m 2/m

09.EC.15 Ferroceladonite! K2FeFeSi8O20(OH)4 C 2/m 2/m

09.EC.15 Montdorite (K,Na)(Fe,Mn,Mg)2.5[Si4O10](F,OH)2 C 2/c 2/m

09.EC.15 Nanpingite Cs(Al,Mg,Fe,Li)2(Si3Al)O10(OH,F)2 C 2/c 2/m

09.EC.15 Tobelite (NH4,K)Al2(Si3Al)O10(OH)2 C 2/m 2/m

09.EC.15 Roscoelite K(V,Al,Mg)2AlSi3O10(OH)2 C 2/m 2/m

09.EC.15 Muscovite KAl2(Si3Al)O10(OH,F)2 C 2/m 2/m

09.EC.15 Paragonite NaAl2(Si3Al)O10(OH)2 C 2/c,Cc Mono

09.EC.15 Tainiolite KLiMg2Si4O10F2 C 2/m 2/m

09.EC.15 Chromceladonite! KCrMg(Si4O10)(OH)2 C 2 2

09.EC.15 Ganterite! [Ba0.5(Na,K)0.5]Al2(Si2.5Al1.5O10)(OH)2 C 2/c 2/m

Other Ganterite Information

Help on References: References:

NAME( CanMin, 41:1971) PHYS. PROP.(CanMin, 41:1971) OPTIC PROP.(CanMin, 41:1971)

Help on See Also: See Also:

Links to other databases for Ganterite :
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 Ganterite using:

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

Visit our Advertisers for Ganterite :

A Bijoux Google Search for Ganterite
Adam's Minerals Google Search for Ganterite
Cape Minerals Google Search for Ganterite
Dakota Matrix Minerals Google Search for Ganterite
Excalibur Mineral Corp. Google Search for Ganterite
Exceptional Minerals Google Search for Ganterite
John Betts Fine Minerals Search for Ganterite
McDougall Minerals Google Search for Ganterite
Mineral News Website Link
Rock and Mineral Shows Google Search for Ganterite
Weinrich Minerals, Inc. Google Search for Ganterite

Ask about Ganterite 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 Espa�ol

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

Ganterite

[Ba0.5(Na,K)0.5]Al2(Si2.5Al1.5O10)(OH)2
Dana No: 71.02.02c.07 Strunz No: 09.EC.15
Locality:

Notes: