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Florkeite Mineral Data
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General Florkeite Information
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 Chemical Formula: |
(K3Ca2Na)[Al8Si8O32]•12H2O |
| Composition: |
Molecular Weight = 1,389.14 gm |
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Potassium 8.44 % K 10.17 % K2O |
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Sodium 1.65 % Na 2.23 % Na2O |
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Calcium 5.77 % Ca 8.07 % CaO |
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Aluminum 15.54 % Al 29.36 % Al2O3 |
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Silicon 16.17 % Si 34.60 % SiO2 |
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Hydrogen 1.74 % H 15.56 % H2O |
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Oxygen 50.68 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
K3Ca2NaAl8Si8O32•12(H2O) |
| Environment: |
Zeolite group |
| IMA Status: |
Proposed IMA 2008 |
| Locality: |
Bellerberg volcano, east of Ettringen, eastern Eifel volcanic area, Germany Link to MinDat.org Location Data. |
| Name Origin: |
Commission on New Minerals, Nomenclature and Classification (CNMNC) |
| Synonym: |
IMA2008-036 |
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Florkeite Crystallography
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| Axial Ratios: |
a:b:c =1.3989:1:0.6099 |
| Cell Dimensions: |
a = 19.965, b = 14.271, c = 8.704, alpha = 88.37°, beta = 125.08°, gamma = 89.57° V = 2,028.59 |
| Crystal System: |
Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1 |
| X Ray Diffraction: |
By Intensity(I/Io): 3.235(1), 3.135(0.8), 3.162(0.8),2.736(0.6), 4.965(0.45), 2.665(0.4), 2.712(0.4), 4.065(0.35), |
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Optical Properties of Florkeite
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| Optical Data: |
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Calculated Properties of Florkeite
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| Fermion Index: |
Fermion Index = 0.007887294
Boson Index = 0.992112706 |
| Photoelectric: |
PEFlorkeite = 2.67 barns/electron
U=PEFlorkeite x relectron= . barns/cc.
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| Radioactivity: |
GRapi = 122.76 (Gamma Ray American Petroleum Institute Units)
Concentration of Florkeite per GRapi unit = 0.81 (%)
Estimated Radioactivity from Florkeite  - barely detectable
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Florkeite Classification
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| Dana Class: |
75.00.00.00 (75)Tektosilicate Minerals |
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(75.00)Without Dana Classification Numbers |
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(75.00.00)Silicate, Unclassified |
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75.00.00.00 Alflarsenite NaCa2Be3Si4O13(OH)•2H2O P 21 2 |
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75.00.00.00 Florkeite (K3Ca2Na)[Al8Si8O32]•12H2O P1 1 |
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75.00.00.00 Lechatelierite* SiO2 None |
| Strunz Class: |
09.CG.10 09 - SILICATES (Germanates) |
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09.C - Cyclosilicates |
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09.CG -[Si4O12]8- Branched 4-membered single rings |
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09.CG.10 Florkeite (K3Ca2Na)[Al8Si8O32]•12H2O P1 1 |
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Other Florkeite Information
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| See Also: |
Links to other databases for Florkeite :
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 Florkeite using:
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[WebCrawler]
[Wikipedia]
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Ask about Florkeite here :
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Mindat.org's Discussion Groups
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Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in
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Print or Cut-and-Paste your Florkeite Specimen Label here :
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Florkeite
(K3Ca2Na)[Al8Si8O32]•12H2O
Dana No: 75.00.00.00 Strunz No: 09.CG.10
Locality:
Notes:
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