[Newest Minerals] [Equipment] [Analytical Services] [About Us] [Mineral Gallery] [eBay Store] See Also: [Diamond Crystals] [Mineral News] [Hudson Institute] [Minerals on CDROM] Rare Minerals, Meteorites, Equipment and Analytical Services Excalibur Mineral Company, World leaders in the supply of rare species Serving the scientific and collector communities since 1974 General Werdingite Information(Mg,Fe)2Al14B4Si4O37 |
Molecular Weight = 1,209.06 gm |
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Magnesium 2.81 % Mg 4.67 % MgO |
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Aluminum 31.69 % Al 59.87 % Al2O3 |
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Iron 4.16 % Fe 5.35 % FeO |
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Silicon 9.29 % Si 19.88 % SiO2 |
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Boron 3.22 % B 10.36 % B2O3 |
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Oxygen 48.83 % O |
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______ ______ |
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100.00 % 100.13 % = TOTAL OXIDE |
Mg1.4Fe2+0.9Al14.2B3.6Si4O36.9 |
Granitic pegmatites cutting granulite-facies metapelitic rocks |
Approved IMA 1990 |
Cap Andrahomana, near Fort Dauphin, southeastern Madagascar (type locality of grandidierite), and at Almgjotheii, in the aureole of the Rogaland anorthosite complex, southwestern Norwa
Link to MinDat.org Location Data. |
Named for Gunter Werding, of the Mineralogical Institute, Ruhr University, Bochum, Germany. |
Werdingite + Pronunciation |
ICSD 69604 |
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IMA1988-023 |
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PDF 46-1359 |
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Werdingite Crystallographya:b:c =0.9807:1:1.3991 |
a = 7.995, b = 8.152, c = 11.406, Z = 1; alpha = 110.45°, beta = 110.85°, gamma = 84.66° V = 648.10 Den(Calc)= 3.10 |
Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1 |
By Intensity(I/Io): 5.23(1), 5.43(0.8), 4.98(0.75), |
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Mouse
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| Physical Properties of Werdingite{???} Indistinct |
Brownish yellow. |
3.04 |
Translucent |
Anhedral Grains - Granular minerals without the expression of crystal shapes |
7 - Quartz |
Vitreous (Glassy) |
white |
| Optical Properties of WerdingiteCI meas= -0.012 (Superior) - where the CI = (1-KPDmeas/KC) |
CI calc= 0.004 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2061,KPDmeas= 0.2095,KC= 0.207 Ncalc = 1.63 - 1.64 Biaxial (-), a=1.614, b=1.646, g=1.651, bire=0.0370, 2V(Calc)=42, 2V(Meas)=33-42. Dispersion r > v moderately strong. |
colorless. |
yellow. |
colorless. |
| Calculated Properties of WerdingiteBulk Density (Electron Density)=3.04 gm/cc |
note: Specific Gravity of Werdingite =3.09 gm/cc. Fermion Index = 0.01 |
Boson Index = 0.99 PEWerdingite = 2.61 barns/electron |
U=PEWerdingite x rElectron Density= 7.93 barns/cc. GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Werdingite is Not Radioactive | Werdingite Classification56.03.02.01 (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O |
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(56.03)with [Si2O7] with borate groups |
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(56.03.02)Dana Group |
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09.BD.35 09 - SILICATES (Germanates) |
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09.B - Sorosilicates |
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09.BD -Si2O7 groups with additional anions; |
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| Other Werdingite InformationNAME( AntBidBlaNic2) PHYS. PROP.(Am.Min.,Vol.75,p415-420,1990) OPTIC PROP.(AntBidBlaNic2) |
Links to other databases for Werdingite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - Google Images 6 - Google Scholar 7 - Handbook of Mineralogy (MinSocAm) 8 - Handbook of Mineralogy (UofA) 9 - MinDAT 10 - MinMax(Deutsch) 11 - MinMax(English) 12 - Mineralienatlas (Deutsch) 13 - QUT Mineral Atlas 14 - Ruff.Info 15 - WWW-MINCRYST Search for Werdingite using: Visit our Advertisers for Werdingite : AA Mineral SpecimensB & L Fine Minerals Crystalarium.com Dan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Diamond Dan Publications e-Rocks Auctions Excalibur Minerals Exceptional Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club Wrights Rock Shop Translate Werdingite Mineral Data : Ask about Werdingite here : Print or Cut-and-Paste your Werdingite Specimen Label here :
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