| Eveslogite Mineral Data |
General Eveslogite Information |
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| (Ca,K,Na,Sr,Ba)48[(Ti,Nb,Fe,Mn)12(OH)12Si48O144](F,OH,Cl)14 | |||
| Molecular Weight = 6,800.28 gm | |||
| Potassium 7.05 % K 8.50 % K2O | |||
| Rubidium 0.18 % Rb 0.19 % Rb2O | |||
| Barium 2.52 % Ba 2.82 % BaO | |||
| Sodium 3.48 % Na 4.69 % Na2O | |||
| Strontium 2.32 % Sr 2.74 % SrO | |||
| Calcium 13.24 % Ca 18.52 % CaO | |||
| Zirconium 0.25 % Zr 0.34 % ZrO2 | |||
| Tantalum 0.21 % Ta 0.26 % Ta2O5 | |||
| Titanium 3.89 % Ti 6.50 % TiO2 | |||
| Manganese 0.77 % Mn 1.10 % Mn2O3 | |||
| Niobium 4.56 % Nb 6.53 % Nb2O5 | |||
| Aluminum 0.16 % Al 0.31 % Al2O3 | |||
| Iron 0.85 % Fe 0.88 % FeO / 0.23 % Fe2O3 | |||
| Silicon 19.54 % Si 41.79 % SiO2 | |||
| Hydrogen 0.32 % H 2.84 % H2O | |||
| Chlorine 0.42 % Cl 0.42 % Cl | |||
| - % Cl -0.09 % -O=Cl2 | |||
| Oxygen 37.53 % O | |||
| Fluorine 2.71 % F 2.71 % F | |||
| - % F -1.14 % -O=F2 | |||
| ______ ______ | |||
| 100.00 % 100.14 % = TOTAL OXIDE | |||
| Ca22.46K12.27Na10.3Sr1.8Ba1.25Ti5.53Nb3.34Mn3+0.95Fe2+0.83Fe3+0.2Zr0.19Rb0.14Ta0.08 (OH)12Si47.3Al0.41O138.08(OH)9.42Cl0.8 | |||
| Veins cutting nephneline syenite. (close to astrophyllite) | |||
| Approved IMA 2004 (Dana # Added) | |||
| Mt. Eveslogchorr, Khibiny alkaline massif, Kola Peninsula, Russia. Link to MinDat.org Location Data. | |||
| Named for the locality | |||
| IMA2001-023 | |||
Search for Eveslogite Images | |||
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Eveslogite Crystallography |
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| a:b:c =0.5641:1:1.7768 | |||
| a = 14.069, b = 24.937, c = 44.31, Z = 4; beta = 95.02° V = 15,486.03 Den(Calc)= 2.92 | |||
| Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2/m | |||
| By Intensity(I/Io): 2.853(1)(428), 3.127(0.65)(426), 2.99(0.59)(2.3.12),3.11(0.52)(364), 12.33(0.51)(020), 2.94(0.45)(24.1.2), 6.199(0.42)(040), | |||
Physical Properties of Eveslogite |
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| [001] Perfect, [010] Perfect | |||
| Light brown, Yellow brown. | |||
| 2.85 | |||
| Semitransparent | |||
| Brittle - Splintery - Brittle fracture leaving splintery fragments. | |||
| Aggregates - Made of numerous individual crystals or clusters. | |||
| Fibrous - Crystals made up of fibers. | |||
| 5 - Apatite | |||
| Vitreous - Silky | |||
| white | |||
Optical Properties of Eveslogite |
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| CI meas= -0.019 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.006 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2191,KPDmeas= 0.2244,KC= 0.2203 |
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| Biaxial (-), a=1.631, b=1.641, g=1.647, bire=0.0160 | |||
Calculated Properties of Eveslogite |
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relectron=2.86 gm/cc |
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| Fermion Index = 0.02111 Boson Index = 0.97889 |
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PEEveslogite = 26.49 barns/electron |
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| GRapi = 172.67 (Gamma Ray American Petroleum Institute Units) Estimated Radioactivity from Eveslogite |
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Eveslogite Classification |
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| 56.2.6c.7 (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O | |||
| (56.2)with cations in [4] and/or >[4] coordination | |||
| (56.2.6c)Seidozerite - Lamprophyllite group (Lamprophyllite subgroup) | |||
| VIII/F.35-60 VIII - Silicates | |||
| VIII/F - Inosilicates (chain and band) complex chain structure. Cylindric chains and others | |||
| VIII/F.35 - Ashcroftine-(Y) series | |||
Other Eveslogite Information |
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| NAME( AmMin, 89:249) PHYS. PROP.(AmMin, 89:249) OPTIC PROP.(AmMin, 89:249) | |||
| Links to other databases for Eveslogite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas Search for Eveslogite using: Visit our Advertisers for Eveslogite : Translate Eveslogite Mineral Data : Ask about Eveslogite here : Print or Cut-and-Paste your Eveslogite Specimen Label here :
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