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Sursassite Mineral Data |
General Sursassite Information |
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Mn++2Al3(SiO4)(Si2O7)(OH)3 | ||
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Molecular Weight = 502.09 gm | ||
Manganese 21.88 % Mn 28.26 % MnO | |||
Aluminum 16.12 % Al 30.46 % Al2O3 | |||
Silicon 16.78 % Si 35.90 % SiO2 | |||
Hydrogen 0.60 % H 5.38 % H2O | |||
Oxygen 44.61 % O | |||
______ ______ | |||
100.00 % 100.00 % = TOTAL OXIDE | |||
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Mn2+2Al3(SiO4)(Si2O7)(OH)3 | ||
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As vein fillings in manganese deposits in low-grade metasediments. | ||
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Valid Species (Pre-IMA) | ||
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Val d'Err, Oberhalbstein, Graub�unden, Switzerland. Link to MinDat.org Location Data. | ||
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Named from the Roman name for Oberhalbstein, Sursass, Switzerland. | ||
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Sursassite + Pronunciation ![]() |
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ICSD 40031 | ||
PDF 37-479 | |||
Sursassite Image | |||
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Sursassite Crystallography |
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a:b:c =1.5025:1:1.5164 | ||
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a = 8.7, b = 5.79, c = 8.78, Z = 2; beta = 108.9° V = 418.43 Den(Calc)= 3.98 | ||
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Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/m | ||
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By Intensity(I/Io): 2.82(1), 2.57(0.7), 2.88(0.7), | ||
Physical Properties of Sursassite |
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{101} Distinct | ||
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Deep reddish brown, Copper red. | ||
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3.256 | ||
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Transparent to translucent | ||
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Botryoidal - "Grape-like" rounded forms (e.g.. malachite). | ||
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Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite) | ||
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Vitreous (Glassy) | ||
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yellowish brown | ||
Optical Properties of Sursassite |
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CI meas= -0.091 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= 0.107 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.189,KPDmeas= 0.2311,KC= 0.2117 Ncalc = 1.69 - 1.84 |
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Biaxial (-), a=1.736, b=1.755, g=1.766, bire=0.0300, 2V(Calc)=72, 2V(Meas)=medium. | ||
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light yellow. | ||
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reddish brown. | ||
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light yellow. | ||
Calculated Properties of Sursassite |
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Bulk Density (Electron Density)=3.19 gm/cc note: Specific Gravity of Sursassite =3.26 gm/cc. |
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Fermion Index = 0.0080517972 Boson Index = 0.9919482028 |
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PESursassite = 6.66 barns/electron U=PESursassite x rElectron Density= 21.24 barns/cc. |
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GRapi = 0 (Gamma Ray American Petroleum Institute Units) Sursassite is Not Radioactive |
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Sursassite Classification |
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58.02.03.01 (58)Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups | ||
(58.02)with cations in [6] and higher coordination; single and double groups (n=1,2) | |||
(58.02.03)Sursassite and related species | |||
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09.BG.15 09 - SILICATES (Germanates) | ||
09.B - Sorosilicates | |||
09.BG -Sorosilicates with mixed SiO4 and Si2O7 groups; | |||
Other Sursassite 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 Sursassite : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - GeoScienceWorld 6 - Google Images 7 - Google Scholar 8 - Handbook of Mineralogy (MinSocAm) 9 - Handbook of Mineralogy (UofA) 10 - MinDAT 11 - Mineralienatlas (Deutsch) 12 - Online Mineral Museum 13 - QUT Mineral Atlas 14 - Ruff.Info 15 - WWW-MINCRYST Search for Sursassite using: Visit our Advertisers for Sursassite : Ask about Sursassite here : Print or Cut-and-Paste your Sursassite Specimen Label here :
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