Phlogopite Mineral Data (original) (raw)

General Phlogopite Information

Help on Chemical Formula: Chemical Formula:

KMg3(Si3Al)O10(F,OH)2

Help on Composition: Composition:

Molecular Weight = 419.25 gm

Potassium 9.33 % K 11.23 % K2O

Magnesium 17.39 % Mg 28.84 % MgO

Aluminum 6.44 % Al 12.16 % Al2O3

Silicon 20.10 % Si 42.99 % SiO2

Hydrogen 0.24 % H 2.15 % H2O

Oxygen 41.98 % O

Fluorine 4.53 % F 4.53 % F

- % F -1.91 % -O=F2

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

KMg3AlSi3O10F(OH)

Help on Environment: Environment:

Contact and regional metamorphic limestones and dolomites. Ultramafic igneous rocks.

Help on IMA Status: IMA Status:

Valid Species (Pre-IMA) 1841

Help on Locality: Locality:

St. Lawrence Co., at Edwards, New York, USA. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

From the Greek flogopos - "resembling fire."

Help on Name Pronunciation: Name Pronunciation:

Phlogopite + Pronunciation Say PHLOGOPITE

Help on Synonym: Synonym:

Magnesium Mica

Phlogopite Image

Click Here for Larger Phlogopite Image in a New Browser Window Images:

Click Here for Larger Phlogopite Image Phlogopite Comments: Exceptionally well-crystallized wine-colored pseudo-hexagonal crystal of phlogopite on white calcite. Location: Kalu Khan, Badakhshan, Afghanistan.Scale: 6 x 5.5 cm. © Fabre Minerals

Click Here for Larger Phlogopite Image in a New Browser Window Images:

Click Here for Larger Phlogopite Image in a New Browser Window Images:

Click Here for Larger Phlogopite Image Phlogopite Lazurite Comments: Gemmy brownish phlogopite crystals on blue lazurite (lapis) matrix with minor pyrite. Location: Koksha Valley, Badakhshan Province, Afghanistan.Scale: 10 x 11.5 cm. © Kevin Ward

Phlogopite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =0.5752:1:2.2058

Help on Cell Dimensions: Cell Dimensions:

a = 5.31, b = 9.23, c = 20.36, Z = 4; beta = 99.3° V = 984.75 Den(Calc)= 2.83

Help on Crystal System: Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 9.998(1), 2.613(0.53), 3.382(0.33),

Help on Forms: Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
- Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above

| | Forms:( 1 1 2) ( 2 2 1) ( 0 1 0) ( 0 0 1) Warning: this large pop-up is very compute intensive and may not work well with some computers. | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Click Here for Large Phlogopite Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Physical Properties of Phlogopite

Help on Cleavage: Cleavage:

{001} Perfect

Help on Color: Color:

Brown, Gray, Green, Yellow, Reddish brown.

Help on Density: Density:

2.7 - 2.9, Average = 2.8

Help on Diaphaneity: Diaphaneity:

Transparent to translucent

Help on Fracture: Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Help on Habit: Habit:

Lamellar - Thin laminae producing a lamellar structure.

Help on Habit: Habit:

Micaceous - Platy texture with "flexible" plates.

Help on Habit: Habit:

Scaly - Morphology like fish scales.

Help on Hardness: Hardness:

2-2.5 - Gypsum-Finger Nail

Help on Luminescence: Luminescence:

Fluorescent, Short UV=Straw to Lemon Yellow, Long UV=Weak Blue-white to blue-gray.

Help on Luster: Luster:

Vitreous - Pearly

Help on Streak: Streak:

white

Optical Properties of Phlogopite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= -0.009 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.002 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2034,KPDmeas= 0.2055,KC= 0.2037
Ncalc = 1.55 - 1.59

Help on Optical Data: Optical Data:

Biaxial (-), a=1.53-1.573, b=1.557-1.617, g=1.558-1.618, bire=0.0280-0.0450, 2V(Calc)=16-20, 2V(Meas)=0-12. Dispersion weak to distinct, r < v.

Help on Pleochroism (x): Pleochroism (x):

colorless, pale yellow, orange, salmon pink, or brown. red brown.

Help on Pleochroism (y): Pleochroism (y):

brownish yellow, buff, reddish orange, pale reddish brown, or colorless.

Calculated Properties of Phlogopite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=2.81 gm/cc
note: Specific Gravity of Phlogopite =2.83 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Help on Photoelectric: Photoelectric:

PEPhlogopite = 2.30 barns/electron
U=PEPhlogopite x relectron= 6.46 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 133.53 (Gamma Ray American Petroleum Institute Units)
Concentration of Phlogopite per GRapi unit = 0.75 (%)

Estimated Radioactivity from Phlogopite - barely detectable

Phlogopite Classification

Help on Dana Class: Dana Class:

71.02.02b.01 (71)Phyllosilicate Sheets of Six-Membered Rings

(71.02)with 2:1 Layers

(71.02.02b)Mica Group (Biotite subgroup)

71.02.02b.01 Phlogopite KMg3(Si3Al)O10(F,OH)2 C 2/m 2/m

71.02.02b.01a Tetraferriphlogopite! KMg3FeSi3O10(OH)2 2/m

71.02.02b.01b Shirozulite! KMn3(AlSi3)O10(OH,F)2 C 2/m 2/m

71.02.02b.01c Fluorophlogopite! KMg3(AlSi3)O10F2 C 2/m 2/m

71.02.02b.02 Biotite* K(Mg,Fe)3[AlSi3O10(OH,F)2 C 2/m 2/m

71.02.02b.03 Annite KFe3AlSi3O10(OH,F)2 C 2/m 2/m

71.02.02b.03a Fluorannite! KFe3AlSi3O10F2 C 2/m 2/m

71.02.02b.04 Tetraferriannite K(Fe,Mg)3(Fe,Al)Si3O10(OH)2 C 2/m 2/m

71.02.02b.05 Siderophyllite KFe2Al(Al2Si2)O10(F,OH)2 C 2/m 2/m

71.02.02b.05a Eastonite! KMg2Al[Al2Si2O10](OH)2 2/m

71.02.02b.06 Hendricksite K(Zn,Mg,Mn)3Si3AlO10(OH)2 C 2/m 2/m

71.02.02b.07 Lepidolite K(Li,Al)3(Si,Al)4O10(F,OH)2 C 2/m,Cm Mono

71.02.02b.08 Polylithionite KLi2AlSi4O10(F,OH)2 C 2/m 2/m

71.02.02b.08a Trilithionite! KLi1.5Al1.5AlSi3O10F2 C 2/m 2/m

71.02.02b.08b Sokolovaite! CsLi2AlSi4O10F2 C 2/m, C 2 or Cm Mono

71.02.02b.09 Tainiolite KLiMg2Si4O10F2 C 2/m 2/m

71.02.02b.10 Zinnwaldite KLiFeAl(AlSi3)O10(F,OH)2 C 2/m 2/m

71.02.02b.11 Norrishite K(Mn2Li)Si4O10(O)2 C 2/m 2/m

71.02.02b.12 Masutomilite K(Li,Al,Mn)3[(Si,Al)4O10](F,OH)2 C 2/m 2/m

71.02.02b.13 Aspidolite NaMg3AlSi3O10(OH)2 C 2/m 2/m

71.02.02b.14 Wonesite (Na,K).5(Mg,Fe,Al)3(Si,Al)4O10(OH,F)2 C 2/m 2/m

71.02.02b.15 Preiswerkite NaMg2Al3Si2O10(OH)2 C 2/m 2/m

71.02.02b.16 Ephesite NaLiAl2(Al2Si2)O10(OH)2 C 2/c 2/m

71.02.02b.18 Suhailite! (NH4)Fe3(Si3Al)O10(OH)2 C 2/m? 2/m

Help on Strunz Class: Strunz Class:

09.EC.20 09 - SILICATES (Germanates)

09.E - Phyllosilicates

09.EC -Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets

09.EC.20 Annite KFe3AlSi3O10(OH,F)2 C 2/m 2/m

09.EC.20 Biotite* K(Mg,Fe)3[AlSi3O10(OH,F)2 C 2/m 2/m

09.EC.20 Hendricksite K(Zn,Mg,Mn)3Si3AlO10(OH)2 C 2/m 2/m

09.EC.20 Ephesite NaLiAl2(Al2Si2)O10(OH)2 C 2/c 2/m

09.EC.20 Aspidolite NaMg3AlSi3O10(OH)2 C 2/m 2/m

09.EC.20 Lepidolite K(Li,Al)3(Si,Al)4O10(F,OH)2 C 2/m,Cm Mono

09.EC.20 Preiswerkite NaMg2Al3Si2O10(OH)2 C 2/m 2/m

09.EC.20 Masutomilite K(Li,Al,Mn)3[(Si,Al)4O10](F,OH)2 C 2/m 2/m

09.EC.20 Wonesite (Na,K).5(Mg,Fe,Al)3(Si,Al)4O10(OH,F)2 C 2/m 2/m

09.EC.20 Polylithionite KLi2AlSi4O10(F,OH)2 C 2/m 2/m

09.EC.20 Phlogopite KMg3(Si3Al)O10(F,OH)2 C 2/m 2/m

09.EC.20 Norrishite K(Mn2Li)Si4O10(O)2 C 2/m 2/m

09.EC.20 Siderophyllite KFe2Al(Al2Si2)O10(F,OH)2 C 2/m 2/m

09.EC.20 Fluorannite! KFe3AlSi3O10F2 C 2/m 2/m

09.EC.20 Shirokshinite! K(NaMg2)Si4O10F2 C 2/m 2/m

09.EC.20 Zinnwaldite KLiFeAl(AlSi3)O10(F,OH)2 C 2/m 2/m

09.EC.20 Eastonite! KMg2Al[Al2Si2O10](OH)2 2/m

09.EC.20 Tetraferriannite K(Fe,Mg)3(Fe,Al)Si3O10(OH)2 C 2/m 2/m

09.EC.20 Tetraferriphlogopite! KMg3FeSi3O10(OH)2 2/m

09.EC.20 Trilithionite! KLi1.5Al1.5AlSi3O10F2 C 2/m 2/m

09.EC.20 Sokolovaite! CsLi2AlSi4O10F2 C 2/m, C 2 or Cm Mono

09.EC.20 Shirozulite! KMn3(AlSi3)O10(OH,F)2 C 2/m 2/m

09.EC.20 Suhailite! (NH4)Fe3(Si3Al)O10(OH)2 C 2/m? 2/m

09.EC.20 Fluorophlogopite! KMg3(AlSi3)O10F2 C 2/m 2/m

Other Phlogopite Information

Help on See Also: See Also:

Links to other databases for Phlogopite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Amethyst Galleries' Mineral Gallery
5 - Athena
6 - CalTech Mineral Spectroscopy
7 - EUROmin Project
8 - Ecole des Mines de Paris
9 - Franklin Minerals(Palache)
10 - GeoScienceWorld
11 - Google Images
12 - Google Scholar
13 - Handbook of Mineralogy (MinSocAm)
14 - Handbook of Mineralogy (UofA)
15 - MinDAT
16 - Mineral and Gemstone Kingdom
17 - Mineralienatlas (Deutsch)
18 - Online Mineral Museum
19 - QUT Mineral Atlas
20 - Ruff.Info
21 - Scandinavian mineral gallery
22 - UCLA - Petrography Thin-Sections
23 - WWW-MINCRYST

Search for Phlogopite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Phlogopite :

A Bijoux Google Search for Phlogopite
Adam's Minerals Google Search for Phlogopite
Cape Minerals Google Search for Phlogopite
Dakota Matrix Minerals Google Search for Phlogopite
Excalibur Mineral Corp. Google Search for Phlogopite
Exceptional Minerals Google Search for Phlogopite
John Betts Fine Minerals Search for Phlogopite
McDougall Minerals Google Search for Phlogopite
Mineral News Website Link
Rock and Mineral Shows Google Search for Phlogopite
Weinrich Minerals, Inc. Google Search for Phlogopite

Ask about Phlogopite 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 Phlogopite Specimen Label here :

Phlogopite

KMg3(Si3Al)O10(F,OH)2
Dana No: 71.02.02b.01 Strunz No: 09.EC.20
Locality:

Notes: