Wadalite Mineral Data

General Wadalite Information

Chemical Formula:

Ca6Al5Si2O16Cl3

Composition:

Molecular Weight = 795.48 gm

Calcium 30.23 % Ca 42.30 % CaO

Magnesium 1.83 % Mg 3.04 % MgO

Aluminum 11.19 % Al 21.15 % Al₂O₃

Iron 2.11 % Fe 3.01 % Fe₂O₃

Silicon 9.53 % Si 20.39 % SiO₂

Chlorine 12.92 % Cl 12.92 % Cl

- % Cl -2.92 % -O=Cl₂

Oxygen 32.18 % O

______ ______

100.00 % 99.90 % = TOTAL OXIDE

Empirical Formula:

Ca₆Al_3.3Fe³⁺_0.3Mg_0.6Si_2.7O₁₆Cl_2.9

Environment:

Skarn xenolith in two-pyroxene andesite.

IMA Status:

Approved IMA 1993

Locality:

Tadano, Koriyama Cith, Fukushima Prefecture, Japan. Link to MinDat.org Location Data.

Name Origin:

Named for Tsunashiro Wada (1856-1920), first Director General of the Geological Survey of Japan.

Name Pronunciation:

Wadalite

Synonym:

ICSD 72504

IMA1987-045

PDF 81-1135

Wadalite Image

Images:

Wadalite

Comments: Gray wadalite masses in matrix.
Location: Tadano, Koriyama, Fukushima, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Images:

Kumtyubeite Srebrodolskite Wadalite Rondorfite

Comments: BSE image of kumtyubeite (Kmt) associated with srebrodolskite (Srb), bultfonteinite (Blt), Ca- kydrosilicates, wadalite (Wad), rondorfite (Rndr), and ettringite (dark gray). (AmMin, v94:1361).
Location: Rock-forming mineral found in skarn carbonate-xenoliths in ignimbrites of the Upper Chegem volcanic structure, Kabardino-Balkaria, Northern Caucasus, Russia. Scale: See Image.
© American Mineralogist

Wadalite Crystallography

Cell Dimensions:

a = 12.014, Z = 4; V = 1,734.06 Den(Calc)= 3.05

Crystal System:

Isometric - Hextetrahedral H-M Symbol (4 3m) Space Group: I 43d

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

By Intensity(I/I_o): 2.686(1)(420), 3.003(0.42)(400), 2.452(0.39)(422),1.665(0.25)(640), 2.335(0.18)(510), 2.193(0.17)(521), 4.903(0.16)(211),

Physical Properties of Wadalite

Color:

Colorless, Colorless.

Density:

3.06

Diaphaneity:

Transparent

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Wadalite

Gladstone-Dale:

CI meas= 0 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.003 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2321,KPDmeas= 0.2314,KC= 0.2314
Ncalc = 1.71

Optical Data:

Isotropic, n=1.708.

Calculated Properties of Wadalite

Electron Density:

Bulk Density (Electron Density)=3.02 gm/cc
note: Specific Gravity of Wadalite =3.06 gm/cc.

Fermion Index:

Fermion Index = 0.007294096
Boson Index = 0.992705904

Photoelectric:

PE_Wadalite= 5.93 barns/electron
U=PE_Wadalite x rElectron Density= 17.92 barns/cc.

Radioactivity:

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

Wadalite Classification

Dana Class:

51.04.05.01 (51)Nesosilicate Insular SiO4 Groups Only

(51.04)with cations in [6] and >[6] coordination

(51.04.05)Dana Group

51.04.05.01 Wadalite Ca6Al5Si2O16Cl3 I 43d 4 3m

Strunz Class:

09.AD.25 09 - SILICATES (Germanates)

09.A - Nesosilicates

09.AD -Nesosilicates without additional anions;

09.AD.25 Almandine Fe3Al2(SiO4)3 I a3d 4/m 3 2/m

09.AD.25 Calderite (Mn,Ca)3(Fe,Al)2(SiO4)3 I a3d 4/m 3 2/m

09.AD.25 Andradite Ca3Fe2(SiO4)3 I a3d 4/m 3 2/m

09.AD.25 Goldmanite Ca3(V,Al,Fe)2(SiO4)3 I a3d 4/m 3 2/m

09.AD.25 Hibschite Ca3Al2(SiO4)3-x(OH)4x(x=0.2-1.5) I a3d 4/m 3 2/m

09.AD.25 Knorringite Mg3Cr2(SiO4)3 I a3d 4/m 3 2/m

09.AD.25 Grossular Ca3Al2(SiO4)3 I a3d 4/m 3 2/m

09.AD.25 Henritermierite Ca3(Mn,Al)2(SiO4)2(OH)4 I 4₁/acd 4/m 2/m 2/m

09.AD.25 Katoite Ca3Al2(SiO4)3-x(OH)4xx=1.5-3 I a3d 4/m 3 2/m

09.AD.25 Majorite Mg3(Fe,Al,Si)2(SiO4)3 I a3d 4/m 3 2/m

09.AD.25 Kimzeyite Ca3(Zr,Ti)2(Si,Al,Fe)3O12 I a3d 4/m 3 2/m

09.AD.25 Morimotoite Ca3TiFeSi3O12 I a3d 4/m 3 2/m

09.AD.25 Pyrope Mg3Al2(SiO4)3 I a3d 4/m 3 2/m

09.AD.25 Spessartine Mn3Al2(SiO4)3 I a3d 4/m 3 2/m

09.AD.25 Schorlomite Ca3(Ti,Fe,Al)2[(Si,Fe,Fe)O4]3 I a3d 4/m 3 2/m

09.AD.25 Uvarovite Ca3Cr2(SiO4)3 I a3d 4/m 3 2/m

09.AD.25 Wadalite Ca6Al5Si2O16Cl3 I 43d 4 3m

09.AD.25 Holtstamite! Ca3(Al,Mn)2(SiO4)2(OH)4 I 4₁/acd 4/m 2/m 2/m

Other Wadalite Information

References:

NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.78,p1317,1993) OPTIC PROP.(AmMin)

See Also:

Links to other databases for Wadalite :
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 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
13 - WWW-MINCRYST

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

Wadalite

Ca6Al5Si2O16Cl3
Dana No: 51.04.05.01 Strunz No: 09.AD.25
Locality:

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