| |
 |
Dellaite Mineral Data
|
|
|
General Dellaite Information
|
 Chemical Formula: |
Ca6Si3O11(OH)2 |
| Composition: |
Molecular Weight = 534.73 gm |
| |
Calcium 44.97 % Ca 62.92 % CaO |
| |
Silicon 15.76 % Si 33.71 % SiO2 |
| |
Hydrogen 0.38 % H 3.37 % H2O |
| |
Oxygen 38.90 % O |
| |
______ ______ |
| |
100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Ca6Si3O11(OH)2 |
| Environment: |
Late-stage veins cutting a metamorphic assemblage. |
| IMA Status: |
Approved IMA 1965 |
| Locality: |
Kilchoan, Ardnamurcan, Scotland. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Della Martin Roy (1926-), Pennsylvania State University geochemist who first synthesized this phase. |
| Name Pronunciation: |
Dellaite  |
| Synonym: |
ICSD 20148 |
| |
PDF 29-376 |
| |
Dellaite Image |
|
Images:
|
|
Dellaite Crystallography
|
| Axial Ratios: |
a:b:c =0.9828:1:1.8578 |
| Cell Dimensions: |
a = 6.815, b = 6.934, c = 12.882, Z = 2; alpha = 90.67°, beta = 97.7°, gamma = 98.14° V = 597.13 Den(Calc)= 2.97 |
| Crystal System: |
Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1 |
| X Ray Diffraction: |
By Intensity(I/Io): 2.821(1), 2.551(0.8), 2.806(0.7), |
| |
Physical Properties of Dellaite
|
| Color: |
Colorless. |
| Density: |
2.94 |
| Diaphaneity: |
Transparent |
| Luster: |
Vitreous (Glassy) |
| Streak: |
white |
| |
Optical Properties of Dellaite
|
| Optical Data: |
NCalc= 1.64 - from Gladstone-Dale relationship (KC = 0.2137) where Ncalc=Dcalc*KC+1
NCalc= 1.63 - from Gladstone-Dale relationship (KC = 0.2137) where Ncalc=Dmeas*KC+1
|
| |
Calculated Properties of Dellaite
|
| Electron Density: |
Bulk Density (Electron Density)=2.99 gm/cc
note: Specific Gravity of Dellaite =2.98 gm/cc.
|
| Fermion Index: |
Fermion Index = 0.0081527649
Boson Index = 0.9918472351 |
| Photoelectric: |
PEDellaite = 6.10 barns/electron
U=PEDellaite x rElectron Density= 18.22 barns/cc.
|
| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Dellaite is Not Radioactive |
| |
Dellaite Classification
|
| Dana Class: |
78.01.04.01 (78)Unclassified silicates |
| |
(78.01)possible nesosilicates |
| |
(78.01.04)Dana Group |
| |
78.01.04.01 Dellaite Ca6Si3O11(OH)2 P1 1 |
| Strunz Class: |
09.BG.45 09 - SILICATES (Germanates) |
| |
09.B - Sorosilicates |
| |
09.BG -Sorosilicates with mixed SiO4 and Si2O7 groups; |
| |
09.BG.45 Dellaite Ca6Si3O11(OH)2 P1 1 |
| |
Other Dellaite Information
|
| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) |
| See Also: |
Links to other databases for Dellaite :
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 Dellaite using:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Dellaite :
Ask about Dellaite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in
Espa�ol
Print or Cut-and-Paste your Dellaite Specimen Label here :
|
Dellaite
Ca6Si3O11(OH)2
Dana No: 78.01.04.01 Strunz No: 09.BG.45
Locality:
Notes:
|
|
| |
| |
|
| |
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.
