General Babingtonite Information Chemical Formula: |
Ca2(Fe++,Mn)Fe+++Si5O14(OH) |
Composition: |
Molecular Weight = 573.05 gm |
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Calcium 13.99 % Ca 19.57 % CaO |
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Manganese 2.40 % Mn 3.09 % MnO |
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Iron 17.05 % Fe 21.94 % FeO |
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Silicon 24.51 % Si 52.43 % SiO2 |
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Hydrogen 0.18 % H 1.57 % H2O |
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Oxygen 41.88 % O |
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100.00 % 98.60 % = TOTAL OXIDE |
Empirical Formula: |
Ca2Fe2+0.75Mn2+0.25Fe2+Si5O14(OH) |
IMA Status: |
Valid Species (Pre-IMA) 1824 |
Locality: |
Link to MinDat.org Location Data. |
Name Origin: |
Named after the Irish physicist and mineralogist, W. Babington (1757-1833). |
Name Pronunciation: |
Babingtonite + Pronunciation |
Synonym: |
ICSD 2932 |
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PDF 45-1385 |
| | Babingtonite Image
Images:
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Babingtonite Crystallography Axial Ratios: |
a:b:c =0.6388:1:0.5711 |
Cell Dimensions: |
a = 7.36, b = 11.52, c = 6.58, Z = 2; alpha = 91.516°, beta = 93.85°, gamma = 104.067° V = 539.76 Den(Calc)= 3.53 |
Crystal System: |
Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1 |
X Ray Diffraction: |
By Intensity(I/Io): 2.75(1), 2.87(0.8), 3.12(0.7), |
Crystal Structure:
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Mouse
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| Physical Properties of Babingtonite Cleavage: |
{100} Perfect, {001} Perfect |
Color: |
Brownish black, Greenish black, Black. |
Density: |
3.4 |
Diaphaneity: |
Transparent to Translucent |
Fracture: |
Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). |
Habit: |
Druse - Crystal growth in a cavity which results in numerous crystal tipped surfaces. |
Habit: |
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite) |
Hardness: |
5.5-6 - Knife Blade-Orthoclase |
Luminescence: |
Non-fluorescent. |
Luster: |
Vitreous (Glassy) |
Streak: |
brown |
| Optical Properties of Babingtonite Gladstone-Dale: |
CI meas= -0.063 (Fair) - where the CI = (1-KPDmeas/KC) |
CI calc= -0.024 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2076,KPDmeas= 0.2156,KC= 0.2028 Ncalc = 1.69 - 1.72 Optical Data: |
Biaxial (+), a=1.717, b=1.73, g=1.752, bire=0.0350, 2V(Calc)=76, 2V(Meas)=60-65. Dispersion relatively strong. |
Pleochroism (x): |
none. |
Pleochroism (y): |
none. |
Pleochroism (z): |
non. |
| Calculated Properties of Babingtonite Electron Density: |
Bulk Density (Electron Density)=3.48 gm/cc |
note: Specific Gravity of Babingtonite =3.53 gm/cc. Fermion Index: |
Fermion Index = 0.01 |
Boson Index = 0.99 Photoelectric: |
PEBabingtonite = 8.31 barns/electron |
U=PEBabingtonite x rElectron Density= 28.96 barns/cc. Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Babingtonite is Not Radioactive | Babingtonite Classification Dana Class: |
65.04.01.02 (65)Inosilicate Single-Width Unbranched Chains, W=1 |
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(65.04)with chains P=5 |
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(65.04.01)Rhodonite group |
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Strunz Class: |
09.DK.05 09 - SILICATES (Germanates) |
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09.D - Inosilicates* Structural terminology according to Liebau (1985) |
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09.DK -Inosilicates with 5-periodic single chains |
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| Other Babingtonite Information References: |
NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32) |
See Also: |
Links to other databases for Babingtonite : |
1 - Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Athena 4 - CalTech Mineral Spectroscopy 5 - EUROmin Project 6 - Ecole des Mines de Paris 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 - WWW-MINCRYST Search for Babingtonite using: Visit our Advertisers for Babingtonite : A Bijoux Google Search for BabingtoniteAdam's Minerals Google Search for Babingtonite Cape Minerals Google Search for Babingtonite Dakota Matrix Minerals Google Search for Babingtonite Excalibur Mineral Corp. Google Search for Babingtonite Exceptional Minerals Google Search for Babingtonite John Betts Fine Minerals Search for Babingtonite McDougall Minerals Google Search for Babingtonite Mineral News Website Link Rock and Mineral Shows Google Search for Babingtonite Weinrich Minerals, Inc. Google Search for Babingtonite Ask about Babingtonite here : Print or Cut-and-Paste your Babingtonite Specimen Label here :
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