General Ogdensburgite Information Chemical Formula: |
Ca2(Zn,Mn)Fe+++4(AsO4)4(OH)6•6(H2O) |
Composition: |
Molecular Weight = 1,132.66 gm |
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Calcium 7.08 % Ca 9.90 % CaO |
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Manganese 0.97 % Mn 1.25 % MnO |
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Zinc 4.62 % Zn 5.75 % ZnO |
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Iron 19.72 % Fe 28.20 % Fe2O3 |
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Arsenic 26.46 % As 40.58 % As2O5 |
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Hydrogen 1.60 % H 14.31 % H2O |
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Oxygen 39.55 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
Ca2Zn0.8Mn2+0.2Fe3+4(AsO4)4(OH)6•6(H2O) |
Environment: |
Secondary Fe arsenate. |
IMA Status: |
Approved IMA 1981 |
Locality: |
Sterling Hill mine, Ogdensburg, New Jersy, USA. Link to MinDat.org Location Data. |
Name Origin: |
Named for the locality. |
Name Pronunciation: |
Ogdensburgite + Pronunciation |
| | Ogdensburgite Image
Images:
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Ogdensburgite Crystallography Axial Ratios: |
a:b:c =0.765:1:0.4418 |
Cell Dimensions: |
a = 11.351, b = 14.837, c = 6.555, Z = 2; V = 1,103.96 Den(Calc)= 3.41 |
Crystal System: |
Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Bmmm |
X Ray Diffraction: |
By Intensity(I/Io): 14.8(1), 2.656(0.3), 4.52(0.3), |
| Physical Properties of Ogdensburgite Cleavage: |
{001} Perfect, {010} Fair, {100} Poor |
Color: |
Brownish red, Dark brown, Reddish orange. |
Density: |
2.92 - 3.11, Average = 3.01 |
Diaphaneity: |
Translucent |
Habit: |
Bladed - Aggregates of thin lath-like crystals (e.g. kyanite). |
Habit: |
Encrustations - Forms crust-like aggregates on matrix. |
Habit: |
Micaceous - Platy texture with "flexible" plates. |
Hardness: |
2 - Gypsum |
Luminescence: |
Non-fluorescent. |
Luster: |
Resinous |
Streak: |
brown yellow |
| Optical Properties of Ogdensburgite Gladstone-Dale: |
CI meas= -0.071 (Fair) - where the CI = (1-KPDmeas/KC) |
CI calc= 0.053 (Good) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2232,KPDmeas= 0.2524,KC= 0.2356 Ncalc = 1.69 - 1.8 Optical Data: |
Biaxial (-), a=1.715, b=1.783, g=1.785, bire=0.0700, 2V(Calc)=18, 2V(Meas)=5-10. |
Pleochroism (x): |
yellow. |
Pleochroism (y): |
reddish brown. |
Pleochroism (z): |
reddish brown. |
| Calculated Properties of Ogdensburgite Electron Density: |
Bulk Density (Electron Density)=3.29 gm/cc |
note: Specific Gravity of Ogdensburgite =3.41 gm/cc. Fermion Index: |
Fermion Index = 0.0063625503 |
Boson Index = 0.9936374497 Photoelectric: |
PEOgdensburgite = 27.16 barns/electron |
U=PEOgdensburgite x rElectron Density= 89.45 barns/cc. Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Ogdensburgite is Not Radioactive | Ogdensburgite Classification Dana Class: |
42.09.07.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen |
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(42.09)where (A)3 (XO4)2 Zq · x(H2O) |
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(42.09.07)Dana Group |
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Strunz Class: |
08.DC.57 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.D - Phosphates, etc |
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08.DC -With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1 |
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| Other Ogdensburgite Information References: |
NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) |
See Also: |
Links to other databases for Ogdensburgite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - Franklin Minerals(Dunn) 6 - GeoScienceWorld 7 - Google Images 8 - Google Scholar 9 - Handbook of Mineralogy (MinSocAm) 10 - Handbook of Mineralogy (UofA) 11 - MinDAT 12 - Mineralienatlas (Deutsch) 13 - Online Mineral Museum 14 - QUT Mineral Atlas 15 - Ruff.Info Search for Ogdensburgite using: Visit our Advertisers for Ogdensburgite : A Bijoux Google Search for OgdensburgiteAdam's Minerals Google Search for Ogdensburgite Cape Minerals Google Search for Ogdensburgite Dakota Matrix Minerals Google Search for Ogdensburgite Excalibur Mineral Corp. Google Search for Ogdensburgite Exceptional Minerals Google Search for Ogdensburgite John Betts Fine Minerals Search for Ogdensburgite McDougall Minerals Google Search for Ogdensburgite Mineral News Website Link Rock and Mineral Shows Google Search for Ogdensburgite Weinrich Minerals, Inc. Google Search for Ogdensburgite Ask about Ogdensburgite here : Print or Cut-and-Paste your Ogdensburgite Specimen Label here :
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