Masutomilite Mineral Data (original) (raw)

General Masutomilite Information

Help on Chemical Formula: Chemical Formula:

K(Li,Al,Mn++)3[(Si,Al)4O10](F,OH)2

Help on Composition: Composition:

Molecular Weight = 402.17 gm

Potassium 9.72 % K 11.71 % K2O

Lithium 3.45 % Li 7.43 % Li2O

Manganese 6.83 % Mn 8.82 % MnO

Aluminum 10.06 % Al 19.01 % Al2O3

Silicon 20.95 % Si 44.82 % SiO2

Hydrogen 0.13 % H 1.12 % H2O

Oxygen 41.77 % O

Fluorine 7.09 % F 7.09 % F

- % F -2.98 % -O=F2

______ ______

100.00 % 97.02 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

KLi2Al0.5Mn2+0.5Si3AlO10F1.5(OH)0.5

Help on Environment: Environment:

Li pegmatites.

Help on IMA Status: IMA Status:

Approved IMA 1975

Help on Locality: Locality:

Tanakamiyama district, Shiga Prefecture, Honshu, Japan. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for Kazunosuke Masutomi, Japanese pharmacist and prominent amateur mineralogist and mineral collector.

Help on Name Pronunciation: Name Pronunciation:

Masutomilite + Pronunciation Say MASUTOMILITE

Masutomilite Image

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

Masutomilite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =0.5781:1:1.1089

Help on Cell Dimensions: Cell Dimensions:

a = 5.262, b = 9.102, c = 10.094, Z = 2; beta = 100.83° V = 474.84 Den(Calc)= 2.81

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): 3.32(1), 10.1(0.72), 3.35(0.65),

Click Here for Large Masutomilite 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

| | Brigatti M F , Mottana A , Malferrari D , Cibin G , American Mineralogist , 92 (2007) p.1395-1400, Crystal structure and chemical composition of Li-, Fe-, and Mn-rich micas, Locality: Sawtooth Mountains, Boise county, Idaho, USA, Sample: Boise | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |

Physical Properties of Masutomilite

Help on Cleavage: Cleavage:

{001} Perfect

Help on Color: Color:

Purple pink.

Help on Density: Density:

2.94

Help on Diaphaneity: Diaphaneity:

Transparent to Translucent

Help on Habit: Habit:

Pseudo Hexagonal - Crystals show a hexagonal outline.

Help on Hardness: Hardness:

2.5 - Finger Nail

Help on Luster: Luster:

Vitreous - Pearly

Help on Streak: Streak:

white

Optical Properties of Masutomilite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= 0.065 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.022 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1985,KPDmeas= 0.1897,KC= 0.2029
Ncalc = 1.57 - 1.6

Help on Optical Data: Optical Data:

Biaxial (-), a=1.534, b=1.569, g=1.57, bire=0.0360, 2V(Calc)=18, 2V(Meas)=29-31. Dispersion r > v weak.

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

pale purple.

Help on Pleochroism (z): Pleochroism (z):

colorless.

Calculated Properties of Masutomilite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=2.75 gm/cc
note: Specific Gravity of Masutomilite =2.81 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Help on Photoelectric: Photoelectric:

PEMasutomilite = 3.88 barns/electron
U=PEMasutomilite x relectron= 10.68 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 137.43 (Gamma Ray American Petroleum Institute Units)
Concentration of Masutomilite per GRapi unit = 0.73 (%)

Estimated Radioactivity from Masutomilite - barely detectable

Masutomilite Classification

Help on Dana Class: Dana Class:

71.02.02b.12 (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 Masutomilite Information

Help on References: References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)

Help on See Also: See Also:

Links to other databases for Masutomilite :
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
15 - WWW-MINCRYST

Search for Masutomilite using:

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

Visit our Advertisers for Masutomilite :

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

Ask about Masutomilite 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 Masutomilite Specimen Label here :

Masutomilite

K(Li,Al,Mn++)3[(Si,Al)4O10](F,OH)2
Dana No: 71.02.02b.12 Strunz No: 09.EC.20
Locality:

Notes: