General Sursassite Information![]() Mn++2Al3(SiO4)(Si2O7)(OH)3 |
![]() Molecular Weight = 502.09 gm |
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Manganese 21.88 % Mn 28.26 % MnO |
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Aluminum 16.12 % Al 30.46 % Al2O3 |
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Silicon 16.78 % Si 35.90 % SiO2 |
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Hydrogen 0.60 % H 5.38 % H2O |
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Oxygen 44.61 % O |
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100.00 % 100.00 % = TOTAL OXIDE |
![]() Mn2+2Al3(SiO4)(Si2O7)(OH)3 |
![]() As vein fillings in manganese deposits in low-grade metasediments. |
![]() Valid Species (Pre-IMA) |
![]() Val d'Err, Oberhalbstein, GraubÄunden, Switzerland. Link to MinDat.org Location Data. |
![]() Named from the Roman name for Oberhalbstein, Sursass, Switzerland. |
![]() Sursassite + Pronunciation |
![]() ![]() ICSD 40031 |
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PDF 37-479 |
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Sursassite Crystallography![]() a:b:c =1.5025:1:1.5164 |
![]() a = 8.7, b = 5.79, c = 8.78, Z = 2; beta = 108.9° V = 418.43 Den(Calc)= 3.98 |
![]() Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/m |
![]() By Intensity(I/Io): 2.82(1), 2.57(0.7), 2.88(0.7), |
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| Physical Properties of Sursassite![]() {101} Distinct |
![]() Deep reddish brown, Copper red. |
![]() 3.256 |
![]() Transparent to translucent |
![]() Botryoidal - "Grape-like" rounded forms (e.g.. malachite). |
![]() Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite) |
![]() Vitreous (Glassy) |
![]() yellowish brown |
| Optical Properties of Sursassite![]() 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 ![]() Biaxial (-), a=1.736, b=1.755, g=1.766, bire=0.0300, 2V(Calc)=72, 2V(Meas)=medium. |
![]() light yellow. |
![]() reddish brown. |
![]() light yellow. |
| Calculated Properties of Sursassite![]() Bulk Density (Electron Density)=3.19 gm/cc |
note: Specific Gravity of Sursassite =3.26 gm/cc. ![]() Fermion Index = 0.0080517972 |
Boson Index = 0.9919482028 ![]() PESursassite = 6.66 barns/electron |
U=PESursassite x rElectron Density= 21.24 barns/cc. ![]() GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Sursassite is Not Radioactive | Sursassite Classification![]() 58.02.03.01 (58)Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups |
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(58.02)with cations in [6] and higher coordination; single and double groups (n=1,2) |
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(58.02.03)Sursassite and related species |
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![]() 09.BG.15 09 - SILICATES (Germanates) |
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09.B - Sorosilicates |
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09.BG -Sorosilicates with mixed SiO4 and Si2O7 groups; |
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| Other Sursassite Information![]() NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
![]() 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 : A Bijoux Google Search for SursassiteAdam's Minerals Google Search for Sursassite Cape Minerals Google Search for Sursassite Dakota Matrix Minerals Google Search for Sursassite Excalibur Mineral Corp. Google Search for Sursassite Exceptional Minerals Google Search for Sursassite John Betts Fine Minerals Search for Sursassite McDougall Minerals Google Search for Sursassite Mineral News Website Link Rock and Mineral Shows Google Search for Sursassite Weinrich Minerals, Inc. Google Search for Sursassite Ask about Sursassite here : Print or Cut-and-Paste your Sursassite Specimen Label here :
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