Mineralogy Database

Bustamite Mineral Data

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General Bustamite Information

Help on Chemical  Formula: Chemical Formula: (Mn,Ca)3Si3O9
Help on Composition: Composition: Molecular Weight = 381.92 gm
   Calcium     7.87 %  Ca   11.01 % CaO
   Manganese  32.37 %  Mn   41.79 % MnO
   Silicon    22.06 %  Si   47.20 % SiO2
   Oxygen     37.70 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+2.25Ca0.75Si3O9
Help on Environment: Environment: In manganese ores formed by metamorphism of manganese-bearing sediments with attendant metasomatism.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1826
Help on Locality: Locality: "Type" material, from Tetela de Ocampo, Hidalgo, Mexico, is a mixture. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For General Anastasio Bustamente (1780-1853), of Mexico.
Help on Name Pronunciation: Name Pronunciation: Bustamite + Pronunciation Say BUSTAMITE
Help on Synonym: Synonym: ICSD 34164
  PDF 44-1455
 

Bustamite Image

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  Bustamite

Comments: Very course crystals of brownish red bustamite to 3cm in pink calcite.
Location: Zinc Corp mine, Broken Hill, NSW, Australia. Scale: 7 cm.
© John Attard

Bustamite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.1532:1:1.9275
Help on Cell Dimensions: Cell Dimensions: a = 15.46, b = 7.18, c = 13.84, Z = 8; alpha = 89.567°, beta = 94.883°, gamma = 102.783° V = 1,492.72 Den(Calc)= 3.40
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.872(1), 3.195(0.7), 2.982(0.6),
 

Physical Properties of Bustamite

Help on Cleavage: Cleavage: {100} Perfect, {110} Good, {110} Good
Help on Color: Color: Brown red, Light pink, Pink.
Help on Density: Density: 3.32 - 3.43, Average = 3.37
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Hardness: Hardness: 5.5-6.5 - Knife Blade-Pyrite
Help on Luminescence: Luminescence: Fluorescent, Long UV=pink red.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Bustamite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.016 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.023 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1989,KPDmeas= 0.2003,KC= 0.2036
Ncalc = 1.68 - 1.7
Help on Optical Data: Optical Data: Biaxial (-), a=1.64-1.695, b=1.651-1.708, g=1.653-1.71, bire=0.0130-0.0150
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.
 

Calculated Properties of Bustamite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.27 gm/cc
note: Specific Gravity of Bustamite =3.38 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEBustamite = 10.09 barns/electron
U=PEBustamite x rElectron Density= 33.04 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bustamite is Not Radioactive
 

Bustamite Classification

Help on  Dana Class: Dana Class: 65.02.01.02 (65)Inosilicate Single-Width Unbranched Chains, W=1
  (65.02)with chains P=3
  (65.02.01)Wollastonite group
 
65.02.01.01a Wollastonite-1A CaSiO3 P1 1
 
65.02.01.01b Wollastonite-2M* CaSiO3 P 21 2
 
65.02.01.01c Wollastonite-3A-4A-5A-7A* CaSiO3 P1 1
 
65.02.01.02 Bustamite (Mn,Ca)3Si3O9 P1 1
 
65.02.01.03 Ferrobustamite Ca(Fe,Ca,Mn)Si2O6 P1 1
 
65.02.01.04 Pectolite NaCa2Si3O8(OH) P1 1
 
65.02.01.05 Serandite Na(Mn,Ca)2Si3O8(OH) P1 1
 
65.02.01.06 Cascandite Ca(Sc,Fe)Si3O8(OH) C1 1
 
65.02.01.07 Denisovite (K,Na)Ca2Si3O8(F,OH) Mono
 
65.02.01.08 Tanohataite! LiMn2Si3O8(OH) P1 1
Help on  Strunz Class: Strunz Class: 09.DG.05 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DG -Inosilicates with 3-periodic single and multiple chains
 
09.DG.05 Bustamite (Mn,Ca)3Si3O9 P1 1
 
09.DG.05 Ferrobustamite Ca(Fe,Ca,Mn)Si2O6 P1 1
 
09.DG.05 Pectolite NaCa2Si3O8(OH) P1 1
 
09.DG.05 Wollastonite-3A-4A-5A-7A* CaSiO3 P1 1
 
09.DG.05 Wollastonite-1A CaSiO3 P1 1
 
09.DG.05 Wollastonite-2M* CaSiO3 P 21 2
 
09.DG.05 Serandite Na(Mn,Ca)2Si3O8(OH) P1 1
 

Other Bustamite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Bustamite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Franklin Minerals(Dunn)
6 - Franklin Minerals(Palache)
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineral and Gemstone Kingdom
14 - Mineralienatlas (Deutsch)
15 - Online Mineral Museum
16 - QUT Mineral Atlas
17 - Ruff.Info
18 - University of Colorado - Mineral Structure Data
19 - WWW-MINCRYST

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Bustamite

(Mn,Ca)3Si3O9
Dana No: 65.02.01.02 Strunz No: 09.DG.05
Locality:

 

Notes:

 

 
   
 


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