Wadalite Mineral Data

Wadalite Mineral Data +

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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.

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

Wadalite Crystallography

Cell Dimensions:

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

Crystal System:

Isometric - HextetrahedralH-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

Diaphaniety:

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

Optical Data:

Isotropic, n=1.708.

Calculated Properties of Wadalite

Electron Density:

r_electron=3.02 gm/cc
note: r_Wadalite=3.06 gm/cc.

Fermion Index

Fermion Index = 0.00729
Boson Index = 0.99271

Photoelectric:

PE_Wadalite= 5.93 barns/electron
U=PE_Wadalite x r_electron= 17.92 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Wadalite is Not Radioactive

Wadalite Classification

Dana Class:

51.4.5.1 (51)Nesosilicate Insular SiO4 Groups Only

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

(51.4.5)Dana Group

51.4.5.1 Wadalite Ca6Al5Si2O16Cl3 I 43d 4 3m

Strunz Class:

VIII/J.11-80 VIII - Silicates

VIII/J - Tectosilicates (network) with anions unfamiliar to the tetraheders

VIII/J.11 - Sodalite group, Tsaregorodtsevite - Wadalite series

VIII/J.11-05 Tsaregorodtsevite N(CH3)4AlSi5O12 I 222 2 2 2

VIII/J.11-10 Sodalite Na8Al6Si6O24Cl2 P 43n 4 3m

VIII/J.11-20 Nosean Na8Al6Si6O24(SO4) P 43m 4 3m

VIII/J.11-30 Hauyne (Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2 P 43n 4 3m

VIII/J.11-40 Lazurite Na3Ca(Al3Si3O12)S P 43n 4 3m

VIII/J.11-50 Tugtupite Na4AlBeSi4O12Cl I 4 4

VIII/J.11-60 Kamaishilite Ca2Al2SiO6(OH)2 I-lattice Tetra

VIII/J.11-70 Bicchulite Ca2Al2SiO6(OH)2 I 43m 4 3m

VIII/J.11-80 Wadalite Ca6Al5Si2O16Cl3 I 43d 4 3m

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 -Google Images 5 -Google Scholar 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 - WWW-MINCRYST 12 -École des Mines de Paris

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Wadalite

Ca6Al5Si2O16Cl3
Dana No: 51.4.5.1 Strunz No: VIII/J.11-80
Locality:

Notes: