| |
 |
Knasibfite Mineral Data
|
|
|
General Knasibfite Information
|
 Chemical Formula: |
K3Na4[SiF6]3[BF4] |
| Composition: |
Molecular Weight = 723.72 gm |
| |
Potassium 16.69 % K 20.11 % K2O |
| |
Sodium 13.06 % Na 17.60 % Na2O |
| |
Silicon 11.29 % Si 24.16 % SiO2 |
| |
Boron 1.49 % B 4.81 % B2O3 |
| |
Fluorine 57.46 % F 57.46 % F |
| |
- %
F -24.20 % -O=F2 |
| |
______ ______ |
| |
100.00 % 99.94 % = TOTAL OXIDE |
| Empirical Formula: |
K3.09Na4.11Si2.91BF21.89 |
| Environment: |
Low temperature fumarole. |
| IMA Status: |
Approved IMA 2006 (Dana # Added) |
| Locality: |
La Fossa crater, Vulcano, Aeolian Islands, Italy. Link to MinDat.org Location Data. |
| Name Origin: |
Named from the chemical compostion (K-Na-Si-B-F). |
| Synonym: |
IMA2006-042 |
| |
Knasibfite Image |
|
Images:
|
|
Knasibfite
Comments: SEM image of knasibfite crystals (CanMin; v46:449).
Location: La Fossa crater, Vulcano Island, Aeolian Archipelago, Sicily, Italy.
Scale: See Image.
© Canadian Mineralogist |
|
Knasibfite Crystallography
|
| Axial Ratios: |
a:b:c =0.3225:1:0.5367 |
| Cell Dimensions: |
a = 5.521, b = 17.115, c = 9.186, Z = 2; V = 868.00 Den(Calc)= 2.77 |
| Crystal System: |
Orthorhombic - Pyramidal H-M Symbol (mm2) Space Group: Imm2 |
| X Ray Diffraction: |
By Intensity(I/Io): 8.558(0.5)(020), 8.107(0.25)(011), 4.044(1)(022),3.175(0.3)(141), 2.28(0.5)(222), 2.094(0.25)(251), |
| |
Physical Properties of Knasibfite
|
| Cleavage: |
None |
| Color: |
Colorless. |
| Density: |
2.75 |
| Diaphaneity: |
Transparent |
| Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
| Luster: |
Vitreous (Glassy) |
| Streak: |
shite |
| |
Calculated Properties of Knasibfite
|
| Electron Density: |
Bulk Density (Electron Density)=2.65 gm/cc
note: Specific Gravity of Knasibfite =2.77 gm/cc.
|
| Fermion Index: |
Fermion Index = 0.0082662627
Boson Index = 0.9917337373 |
| Photoelectric: |
PEKnasibfite = 2.66 barns/electron
U=PEKnasibfite x relectron= 7.07 barns/cc.
|
| Radioactivity: |
GRapi = 230.75 (Gamma Ray American Petroleum Institute Units)
Concentration of Knasibfite per GRapi unit = 0.43 (%)
Estimated Radioactivity from Knasibfite  - barely detectable
|
| |
Knasibfite Classification
|
| Dana Class: |
12.01.11.01 (12)Compound Halides |
| |
(12.01)with miscellaneous anions |
| |
(12.01.11)Dana Group |
| |
12.01.11.01 Knasibfite! K3Na4[SiF6]3[BF4] Imm2 mm2 |
| Strunz Class: |
03.CH.25 03 - HALIDES |
| |
03.C - Complex Halides |
| |
03.CH - |
| |
03.CH.25 Knasibfite! K3Na4[SiF6]3[BF4] Imm2 mm2 |
| |
Other Knasibfite Information
|
| References: |
NAME( AmMin, v93:1943) PHYS. PROP.(AmMin, v93:1943) OPTIC PROP.(AmMin, v93:1943) |
| See Also: |
Links to other databases for Knasibfite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
Search for Knasibfite using:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Knasibfite :
Ask about Knasibfite 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
Espaņol
Print or Cut-and-Paste your Knasibfite Specimen Label here :
|
Knasibfite
K3Na4[SiF6]3[BF4]
Dana No: 12.01.11.01 Strunz No: 03.CH.25
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.