Bustamite Mineral Data + 
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- 65.2.1.1a Wollastonite-1A CaSiO3 P1 1
- 65.2.1.1b Wollastonite-2M* CaSiO3 P 21 2
- 65.2.1.1c Wollastonite-3A-4A-5A-7A* CaSiO3 P1 1
- 65.2.1.2 Bustamite (Mn,Ca)3Si3O9 P1 1
- 65.2.1.3 Ferrobustamite Ca(Fe,Ca,Mn)Si2O6 P1 1
- 65.2.1.4 Pectolite NaCa2Si3O8(OH) P1 1
- 65.2.1.5 Serandite Na(Mn,Ca)2Si3O8(OH) P1 1
- 65.2.1.6 Cascandite Ca(Sc,Fe)Si3O8(OH) C1 1
- 65.2.1.7 Denisovite (K,Na)Ca2Si3O8(F,OH) Mono
- VIII/F.18-10 Wollastonite-1A CaSiO3 P1 1
- VIII/F.18-10* Wollastonite-2M* CaSiO3 P 21 2
- VIII/F.18-10** Wollastonite-3A-4A-5A-7A* CaSiO3 P1 1
- VIII/F.18-30 Ferrobustamite Ca(Fe,Ca,Mn)Si2O6 P1 1
- VIII/F.18-40 Bustamite (Mn,Ca)3Si3O9 P1 1
- VIII/F.18-50 Cascandite Ca(Sc,Fe)Si3O8(OH) C1 1
- VIII/F.18-60 Pectolite NaCa2Si3O8(OH) P1 1
- VIII/F.18-70 Denisovite (K,Na)Ca2Si3O8(F,OH) Mono
- VIII/F.18-80 Serandite Na(Mn,Ca)2Si3O8(OH) P1 1
- VIII/F.18-90 Foshagite Ca4Si3O9(OH)2 P 21/m 2/m
- VIII/F.18-100 Hillebrandite Ca6Si3O9(OH)6 C mc21 mm2
General Bustamite Information |
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 Chemical Formula: |
(Mn,Ca)3Si3O9 | ||
| 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 | |||
| Empirical Formula: |
Mn2+2.25Ca0.75Si3O9 | ||
| Environment: |
In manganese ores formed by metamorphism of manganese-bearing sediments with attendant metasomatism. | ||
| IMA Status: |
Valid Species (Pre-IMA) 1826 | ||
| Locality: |
"Type" material, from Tetela de Ocampo, Hidalgo, Mexico, is a mixture. Link to MinDat.org Location Data. | ||
| Name Origin: |
For General Anastasio Bustamente (1780-1853), of Mexico. | ||
| Synonym: |
ICSD 34164 | ||
| PDF 44-1455 | |||
Bustamite Image | |||
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Images:
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Bustamite Crystallography |
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| Axial Ratios: |
a:b:c =2.1532:1:1.9275 | ||
| 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 | ||
| Crystal System: |
Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1 | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.872(1), 3.195(0.7), 2.982(0.6), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Bustamite |
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| Cleavage: |
[100] Perfect, [110] Good, [110] Good | ||
| Color: |
Brown red, Light pink, Pink. | ||
| Density: |
3.32 - 3.43, Average = 3.37 | ||
| Diaphaniety: |
Transparent to Translucent | ||
| Hardness: |
5.5-6.5 - Knife Blade-Pyrite | ||
| Luminescence: |
Fluorescent. | ||
| Luster: |
Vitreous (Glassy) | ||
| Streak: |
white | ||
Optical Properties of Bustamite |
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| 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 |
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| Optical Data: |
Biaxial (-), a=1.64-1.695, b=1.651-1.708, g=1.653-1.71, bire=0.0130-0.0150 | ||
| Pleochroism (x): |
colorless. | ||
| Pleochroism (y): |
colorless. | ||
| Pleochroism (z): |
colorless. | ||
Calculated Properties of Bustamite |
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| Electron Density: |
relectron=3.27 gm/cc |
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| Fermion Index |
Fermion Index = 0.01058 Boson Index = 0.98942 |
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| Photoelectric: |
PEBustamite = 10.09 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Bustamite is Not Radioactive |
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Bustamite Classification |
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| Dana Class: |
65.2.1.2 (65)Inosilicate Single-Width Unbranched Chains, W=1 | ||
| (65.2)with chains P=3 | |||
| (65.2.1)Wollastonite group | |||
| Strunz Class: |
VIII/F.18-40 VIII - Silicates | ||
| VIII/F - Inosilicates (chain and band) Triplet chains [Si3O9]6- | |||
| VIII/F.18 - Wollastonite-2M - Foshagite series | |||
Other Bustamite Information |
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| References: |
NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| 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 - Google Images 8 - Google Scholar 9 - Handbook of Mineralogy (MinSocAm) 10 - Handbook of Mineralogy (UofA) 11 - MinDAT 12 - MinMax(Deutsch) 13 - MinMax(English) 14 - Mineral and Gemstone Kingdom 15 - Mineralienatlas (Deutsch) 16 - QUT Mineral Atlas 17 - Ruff.Info 18 - University of Colorado - Mineral Structure Data 19 - WWW-MINCRYST Search for Bustamite using: Visit our Advertisers for Bustamite : AA Mineral SpecimensB & L Fine Minerals Dan Weinrich Fine Minerals Dan Weinrich Auctions Excalibur Minerals Exceptional Minerals Fabre Minerals Greenside Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club MineralsWeb Fine Minerals The GeoZone Wrights Rock Shop Translate Bustamite Mineral Data : Ask about Bustamite here : Print or Cut-and-Paste your Bustamite Specimen Label here :
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