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Rosenbuschite Mineral Data |
General Rosenbuschite Information |
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(Ca,Na)3(Zr,Ti)Si2O8F | ||
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Molecular Weight = 390.97 gm | ||
Sodium 4.41 % Na 5.94 % Na2O | |||
Calcium 23.06 % Ca 32.27 % CaO | |||
Zirconium 17.50 % Zr 23.64 % ZrO2 | |||
Titanium 3.06 % Ti 5.11 % TiO2 | |||
Silicon 14.37 % Si 30.74 % SiO2 | |||
Oxygen 32.74 % O | |||
Fluorine 4.86 % F 4.86 % F | |||
- % F -2.05 % -O=F2 | |||
______ ______ | |||
100.00 % 100.51 % = TOTAL OXIDE | |||
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Ca2.25Na0.75Zr0.75Ti0.25Si2O8F | ||
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In some nepheline syenites and related pegmatites. | ||
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Valid Species (Pre-IMA) 1887 | ||
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From Lille Aro Island and Skudesundskjaer, near Brevik, Langesundsfjord, and Bratthagen, north of Larvik, Norway. Link to MinDat.org Location Data. | ||
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Named for Carl Harry F. Rosenbusch (1836-1914), German geologist and mineralogist, Heidelberg, Germany. | ||
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Rosenbuschite + Pronunciation ![]() |
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ICSD 22334 | ||
PDF 14-447 | |||
Rosenbuschite Image | |||
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Rosenbuschite Crystallography |
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a:b:c =0.89:1:0.6467 | ||
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a = 10.126, b = 11.377, c = 7.358, Z = 4; alpha = 91.3°, beta = 101.15°, gamma = 112.02° V = 770.80 Den(Calc)= 3.37 | ||
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Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1 | ||
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By Intensity(I/Io): 2.94(1), 3.06(0.8), 1.89(0.6), | ||
Physical Properties of Rosenbuschite |
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{???} Perfect, {???} Distinct | ||
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Gray, Orange, Brownish. | ||
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3.3 | ||
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Transparent to Translucent | ||
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Brittle - Uneven - Very brittle fracture producing uneven fragments. | ||
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Acicular - Occurs as needle-like crystals. | ||
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5-6 - Between Apatite and Orthoclase | ||
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Non-fluorescent. | ||
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Vitreous - Silky | ||
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Nonmagnetic | ||
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white | ||
Optical Properties of Rosenbuschite |
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CI meas= 0.029 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= 0.054 (Good) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2035,KPDmeas= 0.2091,KC= 0.2152 Ncalc = 1.71 - 1.73 |
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Biaxial (+), a=1.678, b=1.687, g=1.705, bire=0.0270 | ||
Calculated Properties of Rosenbuschite |
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Bulk Density (Electron Density)=3.20 gm/cc note: Specific Gravity of Rosenbuschite =3.30 gm/cc. |
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Fermion Index = 0.03 Boson Index = 0.97 |
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PERosenbuschite = 27.23 barns/electron U=PERosenbuschite x rElectron Density= 87.22 barns/cc. |
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GRapi = 0 (Gamma Ray American Petroleum Institute Units) Rosenbuschite is Not Radioactive |
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Rosenbuschite Classification |
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56.02.04.08 (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O | ||
(56.02)with cations in [4] and/or >[4] coordination | |||
(56.02.04)Cuspidine - Wohlerite group | |||
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09.BE.22 09 - SILICATES (Germanates) | ||
09.B - Sorosilicates | |||
09.BE -Si2O7 groups with additional anions; | |||
Other Rosenbuschite Information |
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NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
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Links to other databases for Rosenbuschite : 1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 - Am. Min. Crystal Structure Database 4 - Athena 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 - Mineralienatlas (Deutsch) 14 - Online Mineral Museum 15 - QUT Mineral Atlas 16 - Ruff.Info 17 - WWW-MINCRYST Search for Rosenbuschite using: Visit our Advertisers for Rosenbuschite : Ask about Rosenbuschite here : Print or Cut-and-Paste your Rosenbuschite Specimen Label here :
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