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Boromuscovite Mineral Data

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General Boromuscovite Information

Help on Chemical  Formula: Chemical Formula: KAl2(Si3B)O10(OH,F)2
Help on Composition: Composition: Molecular Weight = 383.13 gm
   Potassium  10.20 %  K    12.29 % K2O
   Aluminum   14.08 %  Al   26.61 % Al2O3
   Silicon    21.99 %  Si   47.05 % SiO2
   Boron       2.82 %  B     9.09 % B2O3
   Hydrogen    0.39 %  H     3.53 % H2O
   Oxygen     48.02 %  O
   Fluorine    2.48 %  F     2.48 % F
                -   %   F    -1.04 % -O=F2    
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: KAl2Si3BO10(OH)1.5F0.5
Help on Environment: Environment: Occurs as a coating on other minerals on the floor of a pegmatite pocket, hydrothermally deposited after rupture of the pocket.
Help on IMA Status: IMA Status: Approved IMA 1991
Help on Locality: Locality: From the Little Three mine, Ramona district, San Diego County, California, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Presumably for the BOROn content and relation to "muscovite."
Help on Name Pronunciation: Name Pronunciation: Boromuscovite + Pronunciation Say BOROMUSCOVITE
Help on Synonym: Synonym: IMA1989-027
 

Boromuscovite Image

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  Boromuscovite

Comments: Grayish-white coatings of boromuscovite on lavender lepidolite crystals.
Location: Little Three Mine, Ramona, San Diego County, Californi, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Boromuscovite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5785:1:1.1465
Help on Cell Dimensions: Cell Dimensions: a = 5.077, b = 8.775, c = 10.061, Z = 2; beta = 101.31° V = 439.52 Den(Calc)= 2.89
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.569(1), 2.505(0.8), 3.008(0.8),
 

Physical Properties of Boromuscovite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: White, Beige white.
Help on Density: Density: 2.81
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Crystalline - Fine - Occurs as well-formed fine sized crystals.
Help on Habit: Habit: Massive - Fibrous - Distinctly fibrous fine-grained forms.
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luster: Luster: Vitreous - Dull
Help on Streak: Streak: white
 

Optical Properties of Boromuscovite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.018 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.045 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2003,KPDmeas= 0.206,KC= 0.2097
Ncalc = 1.59 - 1.61
Help on Optical Data: Optical Data: Biaxial (-), a=1.557, b=1.587, g=1.593, bire=0.0360, 2V(Calc)=46, 2V(Meas)=44.
 

Calculated Properties of Boromuscovite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.79 gm/cc
note: Specific Gravity of Boromuscovite =2.81 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEBoromuscovite = 2.33 barns/electron
U=PEBoromuscovite x relectron= 6.48 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 146.03 (Gamma Ray American Petroleum Institute Units)
Concentration of Boromuscovite per GRapi unit = 0.68 (%)

Estimated Radioactivity from Boromuscovite - barely detectable

 

Boromuscovite Classification

Help on  Dana Class: Dana Class: 71.02.02a.09 (71)Phyllosilicate Sheets of Six-Membered Rings
  (71.02)with 2:1 Layers
  (71.02.02a)Mica Group (Muscovite subgroup)
 
71.02.02a.01 Muscovite KAl2(Si3Al)O10(OH,F)2 C 2/m 2/m
 
71.02.02a.02 Paragonite NaAl2(Si3Al)O10(OH)2 C 2/c,Cc Mono
 
71.02.02a.03 Chernykhite (Ba,Na)V,Al)2(Si,Al)4O10(OH)2 C 2/c 2/m
 
71.02.02a.04 Roscoelite K(V,Al,Mg)2AlSi3O10(OH)2 C 2/m 2/m
 
71.02.02a.05 Glauconite (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2 C 2/m 2/m
 
71.02.02a.06 Celadonite K(Mg,Fe)(Fe,Al)[Si4O10](OH)2 C 2/m 2/m
 
71.02.02a.06b Ferroceladonite! K2FeFeSi8O20(OH)4 C 2/m 2/m
 
71.02.02a.06c Ferroaluminoceladonite! K2Fe2Al2Si8O20(OH)4 C 2/m 2/m
 
71.02.02a.06d Aluminoceladonite! KAl(Mg,Fe)[]Si4O10(OH)2 2/m
 
71.02.02a.06e Chromceladonite! KCrMg(Si4O10)(OH)2 C 2 2
 
71.02.02a.07 Tobelite (NH4,K)Al2(Si3Al)O10(OH)2 C 2/m 2/m
 
71.02.02a.08 Nanpingite Cs(Al,Mg,Fe,Li)2(Si3Al)O10(OH,F)2 C 2/c 2/m
 
71.02.02a.09 Boromuscovite KAl2(Si3B)O10(OH,F)2 C 2/m 2/m
 
71.02.02a.10 Montdorite (K,Na)(Fe,Mn,Mg)2.5[Si4O10](F,OH)2 C 2/c 2/m
 
71.02.02a.11 Chromphyllite! (K,Ba)(Cr,Al)2[AlSi3O10](OH,F)2 C 2c 2/m
 
71.02.02a.12 Shirokshinite! K(NaMg2)Si4O10F2 C 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.EC.15 09 - SILICATES (Germanates)
  09.E - Phyllosilicates
  09.EC -Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets
 
09.EC.15 Boromuscovite KAl2(Si3B)O10(OH,F)2 C 2/m 2/m
 
09.EC.15 Celadonite K(Mg,Fe)(Fe,Al)[Si4O10](OH)2 C 2/m 2/m
 
09.EC.15 Chernykhite (Ba,Na)V,Al)2(Si,Al)4O10(OH)2 C 2/c 2/m
 
09.EC.15 Chromphyllite! (K,Ba)(Cr,Al)2[AlSi3O10](OH,F)2 C 2c 2/m
 
09.EC.15 Glauconite (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2 C 2/m 2/m
 
09.EC.15 Aluminoceladonite! KAl(Mg,Fe)[]Si4O10(OH)2 2/m
 
09.EC.15 Ferroaluminoceladonite! K2Fe2Al2Si8O20(OH)4 C 2/m 2/m
 
09.EC.15 Ferroceladonite! K2FeFeSi8O20(OH)4 C 2/m 2/m
 
09.EC.15 Montdorite (K,Na)(Fe,Mn,Mg)2.5[Si4O10](F,OH)2 C 2/c 2/m
 
09.EC.15 Nanpingite Cs(Al,Mg,Fe,Li)2(Si3Al)O10(OH,F)2 C 2/c 2/m
 
09.EC.15 Tobelite (NH4,K)Al2(Si3Al)O10(OH)2 C 2/m 2/m
 
09.EC.15 Roscoelite K(V,Al,Mg)2AlSi3O10(OH)2 C 2/m 2/m
 
09.EC.15 Muscovite KAl2(Si3Al)O10(OH,F)2 C 2/m 2/m
 
09.EC.15 Paragonite NaAl2(Si3Al)O10(OH)2 C 2/c,Cc Mono
 
09.EC.15 Tainiolite KLiMg2Si4O10F2 C 2/m 2/m
 
09.EC.15 Chromceladonite! KCrMg(Si4O10)(OH)2 C 2 2
 
09.EC.15 Ganterite! [Ba0.5(Na,K)0.5]Al2(Si2.5Al1.5O10)(OH)2 C 2/c 2/m
 

Other Boromuscovite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Am.Min.,Vol.76,p1998-2002,1991) OPTIC PROP.(Am.Min.,Vol.76,p1998-2002,1991)
Help on See Also: See Also: Links to other databases for Boromuscovite :
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

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Print or Cut-and-Paste your Boromuscovite Specimen Label here :

Boromuscovite

KAl2(Si3B)O10(OH,F)2
Dana No: 71.02.02a.09 Strunz No: 09.EC.15
Locality:

 

Notes:

 

 
   
 


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