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Fluorophlogopite Mineral Data
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General Fluorophlogopite Information
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 Chemical Formula: |
KMg3(AlSi3)O10F2 |
| Composition: |
Molecular Weight = 415.82 gm |
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Potassium 6.86 % K 8.27 % K2O |
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Sodium 0.44 % Na 0.60 % Na2O |
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Lithium 0.13 % Li 0.29 % Li2O |
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Magnesium 16.83 % Mg 27.91 % MgO |
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Titanium 0.69 % Ti 1.15 % TiO2 |
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Manganese 0.13 % Mn 0.17 % MnO |
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Aluminum 5.06 % Al 9.56 % Al2O3 |
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Iron 0.94 % Fe 1.21 % FeO |
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Silicon 21.34 % Si 45.66 % SiO2 |
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Hydrogen 0.02 % H 0.15 % H2O |
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Oxygen 38.86 % O |
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Fluorine 8.68 % F 8.68 % F |
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- %
F -3.66 % -O=F2 |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
K0.73Na0.08Li0.04Mg2.88Fe2+0.07Li0.04Mn2+0.01Si3.16Al0.78Ti0.06O10.03F1.9(OH)0.07 |
| Environment: |
Occurs within interstitial, friable altered material in lava fissures and breccias. Mica group (1M polytype): C2/m; structure determined. |
| IMA Status: |
Approved IMA 2006 (Dana # Added) |
| Locality: |
Southwest flank of the Etnean Volcanic Complex, Biancavilla, Catania, Mt. Etna, Sicily, Italy. Link to MinDat.org Location Data. |
| Name Origin: |
Named as the fluorine analog of phlogopite. |
| Synonym: |
IMA2006-011 |
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Fluorophlogopite Image |
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Images:
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Fluorophlogopite
Comments: Books of fluorphlogopite from a magnesian skarn showing the basal cleaveage of the micas..
Location: Arebilovskoe phlogopite deposit, Aldan, Aldan Shield, Saha Republic (Sakha Republic; Yakutia), Eastern-Siberian Region, Russia.
Scale: Specimen size is 3.5x2.5x0.8 cm.
© Pavel M. Kartashov |
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Fluorophlogopite Crystallography
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| Axial Ratios: |
a:b:c =0.5773:1:1.1038 |
| Cell Dimensions: |
a = 5.305, b = 9.189, c = 10.1437, Z = 2; beta = 100.062° V = 486.88 Den(Calc)= 2.84 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m |
| X Ray Diffraction: |
By Intensity(I/Io): 9.99(1), 3.37(0.8), 3.12(0.8),1.32(0.8), 2.61(0.73), 1.607(0.7), 1.574(0.6), 1.304(0.6), 4.41(0.6), |
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Physical Properties of Fluorophlogopite
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| Cleavage: |
{001} Perfect |
| Color: |
Pale yellow. |
| Diaphaneity: |
Transparent |
| Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
| Habit: |
Platy - Sheet forms (e.g. micas). |
| Hardness: |
2-3 - Gypsum-Calcite |
| Luster: |
Vitreous - Greasy |
| Streak: |
white |
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Optical Properties of Fluorophlogopite
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| Gladstone-Dale: |
CI calc= 0.017 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1972,KC= 0.2006
Ncalc = 1.57 |
| Optical Data: |
Biaxial (-), a=1.543, b=1.5682, g=1.5688, bire=0.0258 |
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Calculated Properties of Fluorophlogopite
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| Electron Density: |
Bulk Density (Electron Density)=2.80 gm/cc
note: Specific Gravity of Fluorophlogopite =2.84 gm/cc.
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| Fermion Index: |
Fermion Index = 0.02
Boson Index = 0.98 |
| Photoelectric: |
PEFluorophlogopite = 2.50 barns/electron
U=PEFluorophlogopite x relectron= 7.02 barns/cc.
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| Radioactivity: |
GRapi = 97.80 (Gamma Ray American Petroleum Institute Units)
Concentration of Fluorophlogopite per GRapi unit = 1.02 (%)
Estimated Radioactivity from Fluorophlogopite  - barely detectable
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Fluorophlogopite Classification
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| Dana Class: |
71.02.02b.01c (71)Phyllosilicate Sheets of Six-Membered Rings |
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(71.02)with 2:1 Layers |
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(71.02.02b)Mica Group (Biotite subgroup) |
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71.02.02b.01 Phlogopite KMg3(Si3Al)O10(F,OH)2 C 2/m 2/m |
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71.02.02b.01a Tetraferriphlogopite! KMg3FeSi3O10(OH)2 2/m |
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71.02.02b.01b Shirozulite! KMn3(AlSi3)O10(OH,F)2 C 2/m 2/m |
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71.02.02b.01c Fluorophlogopite! KMg3(AlSi3)O10F2 C 2/m 2/m |
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71.02.02b.02 Biotite* K(Mg,Fe)3[AlSi3O10(OH,F)2 C 2/m 2/m |
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71.02.02b.03 Annite KFe3AlSi3O10(OH,F)2 C 2/m 2/m |
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71.02.02b.03a Fluorannite! KFe3AlSi3O10F2 C 2/m 2/m |
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71.02.02b.04 Tetraferriannite K(Fe,Mg)3(Fe,Al)Si3O10(OH)2 C 2/m 2/m |
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71.02.02b.05 Siderophyllite KFe2Al(Al2Si2)O10(F,OH)2 C 2/m 2/m |
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71.02.02b.05a Eastonite! KMg2Al[Al2Si2O10](OH)2 2/m |
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71.02.02b.06 Hendricksite K(Zn,Mg,Mn)3Si3AlO10(OH)2 C 2/m 2/m |
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71.02.02b.07 Lepidolite K(Li,Al)3(Si,Al)4O10(F,OH)2 C 2/m,Cm Mono |
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71.02.02b.08 Polylithionite KLi2AlSi4O10(F,OH)2 C 2/m 2/m |
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71.02.02b.08a Trilithionite! KLi1.5Al1.5AlSi3O10F2 C 2/m 2/m |
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71.02.02b.08b Sokolovaite! CsLi2AlSi4O10F2 C 2/m, C 2 or Cm Mono |
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71.02.02b.09 Tainiolite KLiMg2Si4O10F2 C 2/m 2/m |
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71.02.02b.10 Zinnwaldite KLiFeAl(AlSi3)O10(F,OH)2 C 2/m 2/m |
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71.02.02b.11 Norrishite K(Mn2Li)Si4O10(O)2 C 2/m 2/m |
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71.02.02b.12 Masutomilite K(Li,Al,Mn)3[(Si,Al)4O10](F,OH)2 C 2/m 2/m |
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71.02.02b.13 Aspidolite NaMg3AlSi3O10(OH)2 C 2/m 2/m |
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71.02.02b.14 Wonesite (Na,K).5(Mg,Fe,Al)3(Si,Al)4O10(OH,F)2 C 2/m 2/m |
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71.02.02b.15 Preiswerkite NaMg2Al3Si2O10(OH)2 C 2/m 2/m |
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71.02.02b.16 Ephesite NaLiAl2(Al2Si2)O10(OH)2 C 2/c 2/m |
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71.02.02b.18 Suhailite! (NH4)Fe3(Si3Al)O10(OH)2 C 2/m? 2/m |
| Strunz Class: |
09.EC.20 09 - SILICATES (Germanates) |
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09.E - Phyllosilicates |
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09.EC -Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets |
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09.EC.20 Annite KFe3AlSi3O10(OH,F)2 C 2/m 2/m |
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09.EC.20 Biotite* K(Mg,Fe)3[AlSi3O10(OH,F)2 C 2/m 2/m |
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09.EC.20 Hendricksite K(Zn,Mg,Mn)3Si3AlO10(OH)2 C 2/m 2/m |
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09.EC.20 Ephesite NaLiAl2(Al2Si2)O10(OH)2 C 2/c 2/m |
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09.EC.20 Aspidolite NaMg3AlSi3O10(OH)2 C 2/m 2/m |
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09.EC.20 Lepidolite K(Li,Al)3(Si,Al)4O10(F,OH)2 C 2/m,Cm Mono |
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09.EC.20 Preiswerkite NaMg2Al3Si2O10(OH)2 C 2/m 2/m |
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09.EC.20 Masutomilite K(Li,Al,Mn)3[(Si,Al)4O10](F,OH)2 C 2/m 2/m |
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09.EC.20 Wonesite (Na,K).5(Mg,Fe,Al)3(Si,Al)4O10(OH,F)2 C 2/m 2/m |
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09.EC.20 Polylithionite KLi2AlSi4O10(F,OH)2 C 2/m 2/m |
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09.EC.20 Phlogopite KMg3(Si3Al)O10(F,OH)2 C 2/m 2/m |
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09.EC.20 Norrishite K(Mn2Li)Si4O10(O)2 C 2/m 2/m |
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09.EC.20 Siderophyllite KFe2Al(Al2Si2)O10(F,OH)2 C 2/m 2/m |
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09.EC.20 Fluorannite! KFe3AlSi3O10F2 C 2/m 2/m |
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09.EC.20 Shirokshinite! K(NaMg2)Si4O10F2 C 2/m 2/m |
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09.EC.20 Zinnwaldite KLiFeAl(AlSi3)O10(F,OH)2 C 2/m 2/m |
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09.EC.20 Eastonite! KMg2Al[Al2Si2O10](OH)2 2/m |
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09.EC.20 Tetraferriannite K(Fe,Mg)3(Fe,Al)Si3O10(OH)2 C 2/m 2/m |
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09.EC.20 Tetraferriphlogopite! KMg3FeSi3O10(OH)2 2/m |
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09.EC.20 Trilithionite! KLi1.5Al1.5AlSi3O10F2 C 2/m 2/m |
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09.EC.20 Sokolovaite! CsLi2AlSi4O10F2 C 2/m, C 2 or Cm Mono |
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09.EC.20 Shirozulite! KMn3(AlSi3)O10(OH,F)2 C 2/m 2/m |
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09.EC.20 Suhailite! (NH4)Fe3(Si3Al)O10(OH)2 C 2/m? 2/m |
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09.EC.20 Fluorophlogopite! KMg3(AlSi3)O10F2 C 2/m 2/m |
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Other Fluorophlogopite Information
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| References: |
NAME( AmMin, v92:1601) PHYS. PROP.(AmMin, v92:1601) OPTIC PROP.(AmMin, v92:1601) |
| See Also: |
Links to other databases for Fluorophlogopite :
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
11 - WWW-MINCRYST
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Fluorophlogopite
KMg3(AlSi3)O10F2
Dana No: 71.02.02b.01c Strunz No: 09.EC.20
Locality:
Notes:
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