Ohmilite Mineral Data + 
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- 65.3.4.1 Batisite BaNaNaTi2O2[Si4O12] Ima2 mm2
- 65.3.4.2 Shcherbakovite KKNaTi2O(OH)[Si4O12] I mma 2/m 2/m 2/m
- 65.3.4.3 Ohmilite Sr3(Ti,Fe)(Si2O6)2(O,OH)·2-3(H2O) P 21/m 2/m
- VIII/F.25-10 Batisite BaNaNaTi2O2[Si4O12] Ima2 mm2
- VIII/F.25-20 Shcherbakovite KKNaTi2O(OH)[Si4O12] I mma 2/m 2/m 2/m
- VIII/F.25-30 Taikanite (Ba,Sr)2Mn2Si4O12 C 2 2
- VIII/F.25-40 Krauskopfite BaSi2O4(OH)2·2(H2O) P 21/a 2/m
- VIII/F.25-50 Ohmilite Sr3(Ti,Fe)(Si2O6)2(O,OH)·2-3(H2O) P 21/m 2/m
General Ohmilite Information |
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 Chemical Formula: |
Sr3(Ti,Fe+++)(Si2O6)2(O,OH)·2-3(H2O) | ||
| Composition: |
Molecular Weight = 678.36 gm | ||
| Strontium 38.75 % Sr 45.83 % SrO | |||
| Titanium 5.29 % Ti 8.83 % TiO2 | |||
| Iron 2.06 % Fe 2.94 % Fe2O3 | |||
| Silicon 16.56 % Si 35.43 % SiO2 | |||
| Hydrogen 0.78 % H 6.97 % H2O | |||
| Oxygen 36.56 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Sr3Ti0.75Fe3+0.25Si4O12.75(OH)0.25·2.5(H2O) | ||
| IMA Status: |
Approved IMA 1973 | ||
| Locality: |
Link to MinDat.org Location Data. | ||
| Synonym: |
ICSD 31213 | ||
| PDF 26-1388 | |||
Ohmilite Image | |||
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Images:
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Ohmilite Crystallography |
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| Axial Ratios: |
a:b:c =1.4077:1:1.0024 | ||
| Cell Dimensions: |
a = 10.979, b = 7.799, c = 7.818, Z = 2; beta = 100.9° V = 657.34 Den(Calc)= 3.43 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/m | ||
| X Ray Diffraction: |
By Intensity(I/Io): 4.62(1), 3.83(0.9), 3.26(0.85), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Ohmilite |
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| Color: |
Light pink. | ||
| Density: |
3.38 | ||
| Hardness: |
3.5 - Copper Penny | ||
| Streak: |
white | ||
Optical Properties of Ohmilite |
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| Gladstone-Dale: |
CI meas= 0.029 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= 0.043 (Good) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1988,KPDmeas= 0.2018,KC= 0.2078 |
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| Optical Data: |
Biaxial (?), a=1.649, g=1.715, bire=0.0660 | ||
Calculated Properties of Ohmilite |
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| Electron Density: |
relectron=3.21 gm/cc |
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| Fermion Index |
Fermion Index = 0.04231 Boson Index = 0.95769 |
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| Photoelectric: |
PEOhmilite = 45.29 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Ohmilite is Not Radioactive |
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Ohmilite Classification |
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| Dana Class: |
65.3.4.3 (65)Inosilicate Single-Width Unbranched Chains, W=1 | ||
| (65.3)with chains P=4 | |||
| (65.3.4)Batisite group | |||
| Strunz Class: |
VIII/F.25-50 VIII - Silicates | ||
| VIII/F - Inosilicates (chain and band) Quadruplet chains [Si4O12]8- | |||
| VIII/F.25 - Batisite - Ohmilite series | |||
Other Ohmilite Information |
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| References: |
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Ohmilite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (MinSocAm) 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris Search for Ohmilite using: Visit our Advertisers for Ohmilite : Translate Ohmilite Mineral Data : Ask about Ohmilite here : Print or Cut-and-Paste your Ohmilite Specimen Label here :
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