Diaoyudaoite Mineral Data

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General Diaoyudaoite Information

Chemical Formula:

NaAl11O17

Composition:

Molecular Weight = 591.78 gm

Sodium 3.88 % Na 5.24 % Na₂O

Aluminum 50.15 % Al 94.76 % Al₂O₃

Oxygen 45.96 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

NaAl₁₁O₁₇

Environment:

Heavy-mineral (S.G. > 2.8) fraction of the surface layer of sea-floor muds at about 1500 m water depth.

IMA Status:

Approved IMA 1986

Locality:

Okinawa Trough, near Diaoyudao Island, a few km northeast of Taiwan. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Diaoyudaoite + Pronunciation

Synonym:

ICSD 63263

PDF 45-1451

Diaoyudaoite Image

Images:

Diaoyudaoite

Comments: Dark green crystalline diaoyudaoite.
Location: Novosibirsk District, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Diaoyudaoite Crystallography

Axial Ratios:

a:c = 1:4.03891

Cell Dimensions:

a = 5.602, c = 22.626, Z = 2; V = 614.93 Den(Calc)= 3.20

Crystal System:

Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 6₃/mmc

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

By Intensity(I/I_o): 11.2(1), 2.68(0.7), 5.65(0.6),

Crystal Structure:

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Felsche J , Naturwissenschaften , 54 (1967) p.612-613, Zur kristallstruktur von beta-aluminiumoxid, Note: x,y coordinates of O3 altered to produce a more reasonable structure, Locality: synthetic

Physical Properties of Diaoyudaoite

Cleavage:

{???} Good

Color:

Colorless, Light green.

Density:

3.3

Diaphaneity:

Transparent

Hardness:

7.6

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Diaoyudaoite

Gladstone-Dale:

CI meas= 0.007 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.024 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.211,KPDmeas= 0.2046,KC= 0.2061
Ncalc = 1.66 - 1.68

Optical Data:

Uniaxial (-), e=1.663, w=1.6876, bire=0.0246.

Calculated Properties of Diaoyudaoite

Electron Density:

Bulk Density (Electron Density)=3.23 gm/cc
note: Specific Gravity of Diaoyudaoite =3.30 gm/cc.

Fermion Index:

Fermion Index = 0.0002206156
Boson Index = 0.9997793844

Photoelectric:

PE_Diaoyudaoite= 1.52 barns/electron
U=PE_Diaoyudaoite x rElectron Density= 4.93 barns/cc.

Radioactivity:

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

Diaoyudaoite Classification

Dana Class:

07.11.12.01 (07)Multiple Oxides

(07.11)as titano-oxides with [4] and [6] substitutions

(07.11.12)Dana Group

07.11.12.01 Diaoyudaoite NaAl11O17 P 6₃/mmc 6/m 2/m 2/m

Strunz Class:

04.CC.45 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.C - Metal:Oxygen = 2:3, 3:5, and Similar

04.CC -With large and medium-sized cations

04.CC.45 Hawthorneite Ba[Ti3Cr4Fe4Mg]O19 P 6₃/mmc 6/m 2/m 2/m

04.CC.45 Diaoyudaoite NaAl11O17 P 6₃/mmc 6/m 2/m 2/m

04.CC.45 Magnetoplumbite Pb(Fe,Mn)12O19 P 6₃/mmc 6/m 2/m 2/m

04.CC.45 Haggertyite! Ba[Fe6Ti5Mg]O19 P 6₃/mmc 6/m 2/m 2/m

04.CC.45 Batiferrite! Ba(Ti2Fe8Fe2)O19 P 6₃/mmc 6/m 2/m 2/m

04.CC.45 Hibonite (Ca,Ce)(Al,Ti,Mg)12O19 P 6₃/mmc 6/m 2/m 2/m

04.CC.45 Nezilovite! PbZn2(Mn,Ti)2Fe8O19 P 6₃/mmc 6/m 2/m 2/m

04.CC.45 Lindqvistite Pb2(Mn,Mg)Fe16027 P 6₃/mmc 6/m 2/m 2/m

04.CC.45 Plumboferrite Pb2Fe(11-x)MnxO19-2x(x=1/3) P 6₃/mmc 6/m 2/m 2/m

04.CC.45 Yimengite K(Cr,Ti,Fe,Mg)12O19 P 6₃/mmc 6/m 2/m 2/m

Other Diaoyudaoite Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Am.Min.,Vol.75,p240,1990) OPTIC PROP.(Am.Min.,Vol.75,p240,1990)

See Also:

Links to other databases for Diaoyudaoite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info

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

Diaoyudaoite

NaAl11O17
Dana No: 07.11.12.01 Strunz No: 04.CC.45
Locality:

Notes: