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General Diaoyudaoite Information | |||
 Chemical Formula: | NaAl11O17 | ||
| Composition: | Molecular Weight = 591.78 gm | ||
| 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: |
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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 | ||
| X Ray Diffraction: | By Intensity(I/Io):11.2(1), 2.68(0.7), 5.65(0.6), | ||
| Crystal Structure:
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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: | PEDiaoyudaoite= 1.52 barns/electron U=PEDiaoyudaoite x Electron Density= 4.93 barns/cc. | ||
| Radioactivity: | GRapi = 0(Gamma Ray American Petroleum Institute Units) Diaoyudaoite isNot 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 | |||
| Strunz Class: | 04.CC.4504 - 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 | |||
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 -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 Search for Diaoyudaoite using: Visit our Advertisers for Diaoyudaoite : Ask about Diaoyudaoite here : Print or Cut-and-Paste your Diaoyudaoite Specimen Label here :
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