General Gugiaite Information![]() Ca2BeSi2O7 |
![]() Molecular Weight = 257.33 gm |
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Calcium 31.15 % Ca 43.58 % CaO |
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Beryllium 3.50 % Be 9.72 % BeO |
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Silicon 21.83 % Si 46.70 % SiO2 |
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Oxygen 43.52 % O |
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100.00 % 100.00 % = TOTAL OXIDE |
![]() Ca2Be(Si2O7) |
![]() In cavities in skarns and melanite adjacent to an alkalic syenite. |
![]() Approved IMA 1962 |
![]() Near the village of Gugia, otherwise unlocated in China. Link to MinDat.org Location Data. |
![]() Named for the locality. |
![]() Gugiaite |
![]() ![]() ICSD 31234 |
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PDF 15-199 |
| | Search for Gugiaite Images
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| | Gugiaite Crystallography![]() a:c = 1:0.67617 |
![]() a = 7.43, c = 5.024, Z = 2; V = 277.35 Den(Calc)= 3.08 |
![]() Tetragonal - ScalenohedralH-M Symbol (4 2m) Space Group: P 421m |
![]() By Intensity(I/Io): 2.765(1), 1.485(0.7), 1.709(0.7), |
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| Physical Properties of Gugiaite![]() {010} Perfect, {001} Distinct, {110} Indistinct |
![]() Colorless. |
![]() 3.03 |
![]() Transparent |
![]() Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. |
![]() 3-4 - Calcite-Fluorite |
![]() Vitreous (Glassy) |
![]() white |
| Optical Properties of Gugiaite![]() CI meas= -0.04 (Good) - where the CI = (1-KPDmeas/KC) |
CI calc= -0.023 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2169,KPDmeas= 0.2205,KC= 0.212 Ncalc = 1.64 - 1.65 ![]() Uniaxial (+), w=1.664, e=1.672, bire=0.0080. |
| Calculated Properties of Gugiaite![]() Bulk Density (Electron Density)=3.06 gm/cc |
note: Specific Gravity of Gugiaite =3.08 gm/cc. ![]() Fermion Index = 0.04 |
Boson Index = 0.96 ![]() PEGugiaite = 4.70 barns/electron |
U=PEGugiaite x rElectron Density= 14.40 barns/cc. ![]() GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Gugiaite is Not Radioactive | Gugiaite Classification![]() 55.04.02.06 (55)Sorosilicate Si2O7 Groups, Generally with No Additional Anions |
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(55.04)with cations in [8] and lower coordination |
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(55.04.02)Fresnoite group |
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![]() 09.BB.10 09 - SILICATES (Germanates) |
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09.B - Sorosilicates |
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09.BB -Si2O7 groups, without non-tetrahedral anions; |
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| Other Gugiaite Information![]() PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
![]() Links to other databases for Gugiaite : |
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 Gugiaite using: Visit our Advertisers for Gugiaite : A Bijoux Google Search for GugiaiteAdam's Minerals Google Search for Gugiaite Cape Minerals Google Search for Gugiaite Dakota Matrix Minerals Google Search for Gugiaite Excalibur Mineral Corp. Google Search for Gugiaite Exceptional Minerals Google Search for Gugiaite John Betts Fine Minerals Search for Gugiaite McDougall Minerals Google Search for Gugiaite Mineral News Website Link Rock and Mineral Shows Google Search for Gugiaite Weinrich Minerals, Inc. Google Search for Gugiaite Ask about Gugiaite here : Print or Cut-and-Paste your Gugiaite Specimen Label here :
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