Hejtmanite Mineral Data + 
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- 56.2.6b.1 Bafertisite Ba(Fe,Mn)2TiSi2O7(O,OH)2 Cm m
- 56.2.6b.2 Hejtmanite Ba(Mn,Fe)2TiO(Si2O7)(OH,F)2 P 21/m 2/m
- 56.2.6b.3 Nafertisite! Na3(Fe,Fe)6(Ti2Si12O34)(O,OH)7·2(H2O) A2/m 2/m
- 56.2.6b.4 Surkhobite! (Ca,Na)(Ba,K)(Fe,Mn)4Ti2(Si4O14)O2(F,OH,O)3 C 2 2
- VIII/C.15-10 Fresnoite Ba2TiSi2O8 P 4bm 4mm
- VIII/C.15-20 Bafertisite Ba(Fe,Mn)2TiSi2O7(O,OH)2 Cm m
- VIII/C.15-30 Hejtmanite Ba(Mn,Fe)2TiO(Si2O7)(OH,F)2 P 21/m 2/m
- VIII/C.15-40 Delindeite Ba2(Na,K,[])3(Ti,Fe)[Ti2(O,OH)4Si4O14](H2O,OH)2 A2/m 2/m
General Hejtmanite Information |
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 Chemical Formula: |
Ba(Mn,Fe++)2TiO(Si2O7)(OH,F)2 | ||
| Composition: |
Molecular Weight = 514.71 gm | ||
| Barium 26.68 % Ba 29.79 % BaO | |||
| Titanium 9.30 % Ti 15.52 % TiO2 | |||
| Manganese 16.01 % Mn 20.67 % MnO | |||
| Iron 5.43 % Fe 6.98 % FeO | |||
| Silicon 10.91 % Si 23.35 % SiO2 | |||
| Hydrogen 0.29 % H 2.62 % H2O | |||
| Oxygen 29.53 % O | |||
| Fluorine 1.85 % F 1.85 % F | |||
| - % F -0.78 % -O=F2 | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
BaMn2+1.5Fe2+0.5TiO(Si2O7)(OH)1.5F0.5 | ||
| IMA Status: |
Approved IMA 1992 | ||
| Locality: |
Link to MinDat.org Location Data. | ||
| Synonym: |
ICSD 39402 | ||
| IMA1989-038 | |||
| PDF 44-1470 | |||
Hejtmanite Image | |||
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Images:
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Hejtmanite Crystallography |
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| Axial Ratios: |
a:b:c =0.8532:1:0.777 | ||
| Cell Dimensions: |
a = 11.748, b = 13.768, c = 10.698, Z = 8; beta = 112.27° V = 1,601.29 Den(Calc)= 4.27 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/m | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.726(1), 5.472(0.32), 3.455(0.17), | ||
Physical Properties of Hejtmanite |
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| Cleavage: |
[???] Perfect | ||
| Color: |
Golden yellow, Orange brown. | ||
| Density: |
4.016 | ||
| Diaphaniety: |
Translucent | ||
| Hardness: |
4.5 - Between Fluorite and Apatite | ||
| Luster: |
Vitreous (Glassy) | ||
| Streak: |
brown yellow | ||
Optical Properties of Hejtmanite |
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| Gladstone-Dale: |
CI meas= 0.007 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.066 (Fair) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1973,KPDmeas= 0.2097,KC= 0.2113 |
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| Optical Data: |
Biaxial (-), a=1.814, b=1.846, g=1.867, bire=0.0530, 2V(Calc)=76, 2V(Meas)=76-76.8. | ||
Calculated Properties of Hejtmanite |
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| Electron Density: |
relectron=3.72 gm/cc |
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| Fermion Index |
Fermion Index = 0.06596 Boson Index = 0.93404 |
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| Photoelectric: |
PEHejtmanite = 123.42 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Hejtmanite is Not Radioactive |
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Hejtmanite Classification |
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| Dana Class: |
56.2.6b.2 (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O | ||
| (56.2)with cations in [4] and/or >[4] coordination | |||
| (56.2.6b)Seidozerite - Lamprophyllite group (Bafertisite subgroup) | |||
| Strunz Class: |
VIII/C.15-30 VIII - Silicates | ||
| VIII/C - Sorosilicates with [Si2O7]6-, with anions unfamiliar to tetraheders [O,OH,F] | |||
| VIII/C.15 - Bafertisite series | |||
Other Hejtmanite Information |
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| References: |
PHYS. PROP.(37th List of New Min.,Min. Mag.,1996) OPTIC PROP.(37th List of New Min.,Min. Mag.,19) | ||
| See Also: |
Links to other databases for Hejtmanite : 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 -École des Mines de Paris Search for Hejtmanite using: Visit our Advertisers for Hejtmanite : AA Mineral SpecimensB & L Fine Minerals Crystal Vaults Dan Weinrich Fine Minerals Dan Weinrich Auctions e-Rocks 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 Rockshop.cz T G Fine Minerals Wrights Rock Shop Translate Hejtmanite Mineral Data : Ask about Hejtmanite here : Print or Cut-and-Paste your Hejtmanite Specimen Label here :
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