Chantalite Mineral Data

General Chantalite Information

Chemical Formula:

CaAl2SiO4(OH)4

Composition:

Molecular Weight = 254.15 gm

Calcium 15.77 % Ca 22.06 % CaO

Aluminum 21.23 % Al 40.12 % Al₂O₃

Silicon 11.05 % Si 23.64 % SiO₂

Hydrogen 1.59 % H 14.18 % H₂O

Oxygen 50.36 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CaAl₂(SiO₄)(OH)₄

Environment:

Found in rodingitic dikes of the ophiolite zone.

IMA Status:

Approved IMA 1977

Locality:

Doganbaba, Burdur, Taurus Mts., SW Turkey. Link to MinDat.org Location Data.

Name Origin:

Named for Chantal Sarp (1944-), Swiss wife of its discoverer, Halil Sarp.

Synonym:

ICSD 100320

PDF 29-1410

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Chantalite Crystallography

Axial Ratios:

a:c = 1:4.70012

Cell Dimensions:

a = 4.952, c = 23.275, Z = 4; V = 570.76 Den(Calc)= 2.96

Crystal System:

Tetragonal - DipyramidalH-M Symbol (4/m) Space Group: I 4₁/a

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

By Intensity(I/I_o): 2.598(1), 4.171(0.7), 3.349(0.6),1.453(0.6), 2.24(0.5), 4.83(0.4), 2.2(0.3), 5.81(0.2),

Crystal Structure:

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Liebich B W , Sarp H , Parthe E , Zeitschrift fur Kristallographie , 150 (1979) p.53-63, The crystal structure of chantalite, CaAl2(OH)4SiO4, Locality: rodingitic dykes in a ophiolitic zone in the Taurus Mountains,, southwest Turkey

Physical Properties of Chantalite

Color:

Colorless, White.

Density:

2.8 - 2.9, Average = 2.84

Diaphaneity:

Transparent

Habit:

Anhedral Grains - Granular minerals without the expression of crystal shapes

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Chantalite

Gladstone-Dale:

CI meas= -0.002 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.035 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2188,KPDmeas= 0.2272,KC= 0.2268
Ncalc = 1.63 - 1.67

Optical Data:

Uniaxial (-), e=1.642, w=1.653, bire=0.0110.

Calculated Properties of Chantalite

Electron Density:

Bulk Density (Electron Density)=2.87 gm/cc
note: Specific Gravity of Chantalite =2.85 gm/cc.

Fermion Index:

Fermion Index = 0.0056176302
Boson Index = 0.9943823698

Photoelectric:

PE_Chantalite= 2.99 barns/electron
U=PE_Chantalite x rElectron Density= 8.59 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Chantalite is Not Radioactive

Chantalite Classification

Dana Class:

78.01.02.01 (78)Unclassified silicates

(78.01)possible nesosilicates

(78.01.02)Dana Group

78.01.02.01 Chantalite CaAl2SiO4(OH)4 I 4₁/a 4/m

Strunz Class:

09.AG.55 09 - SILICATES (Germanates)

09.A - Nesosilicates

09.AG -Nesosilicates with additional anions; cations in > [6] ± [6] coordination

09.AG.55 Chantalite CaAl2SiO4(OH)4 I 4₁/a 4/m

Other Chantalite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Chantalite :
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
15 - WWW-MINCRYST

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

Chantalite

CaAl2SiO4(OH)4
Dana No: 78.01.02.01 Strunz No: 09.AG.55
Locality:

Notes: