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Segelerite Mineral Data + |
General Segelerite Information |
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| CaMgFe+++(PO4)2(OH)·4(H2O) | |||
| Molecular Weight = 399.24 gm | |||
| Calcium 10.04 % Ca 14.05 % CaO | |||
| Magnesium 6.09 % Mg 10.10 % MgO | |||
| Iron 13.99 % Fe 20.00 % Fe2O3 | |||
| Phosphorus 15.52 % P 35.55 % P2O5 | |||
| Hydrogen 2.27 % H 20.31 % H2O | |||
| Oxygen 52.10 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| CaMgFe3+(PO4)2(OH)·4(H2O) | |||
| Grainitc pegmatites. Fe analog of overite. | |||
| Approved IMA 1974 | |||
| Tip Top pegmatite, near Custer, Custer County, South Dakota, USA. Link to MinDat.org Location Data. | |||
| Named for Curt G. Segeler (1901-1989), amateur mineralogist, New York City. | |||
| ICSD 10407 | |||
| PDF 27-1061 | |||
Segelerite Image | |||
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Segelerite Crystallography |
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| a:b:c =0.7906:1:0.3896 | |||
| a = 14.826, b = 18.751, c = 7.307, Z = 8; V = 2,031.36 Den(Calc)= 2.61 | |||
| Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pcca | |||
| By Intensity(I/Io): 2.828(1), 9.31(0.9), 5.34(0.6), | |||
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Mouse |
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Physical Properties of Segelerite |
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| [010] Perfect | |||
| Green, Chartreuse, Colorless. | |||
| 2.67 | |||
| Transparent to Translucent | |||
| Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). | |||
| Striated - Parallel lines on crystal surface or cleavage face. | |||
| 4 - Fluorite | |||
| Vitreous - Adamantine | |||
| white | |||
Optical Properties of Segelerite |
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| CI meas= 0.037 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= 0.015 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.243,KPDmeas= 0.2376,KC= 0.2468 |
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| Biaxial (-), a=1.618, b=1.635, g=1.65, bire=0.0320, 2V(Calc)=84, 2V(Meas)=45-70. | |||
| colorless. | |||
| colorless. | |||
| yellow. | |||
Calculated Properties of Segelerite |
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relectron=2.63 gm/cc |
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| Fermion Index = 0.00944 Boson Index = 0.99056 |
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PESegelerite = 6.20 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Segelerite is Not Radioactive |
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Segelerite Classification |
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| 42.11.1.2 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen | |||
| (42.11)where (AB)4 (XO4)3 Zq · x(H2O) | |||
| (42.11.1)Dana Group | |||
| VII/D.28-20 VII - Phosphates, Arsenates and Vanadates | |||
| VII/D - Water-bearing phosphates with unfamiliar anions, cations of very big and medium size: Al, Mg and Ca, Na, K | |||
| VII/D.28 - Overite- Segelerite group | |||
Other Segelerite Information |
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| NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) | |||
| Links to other databases for Segelerite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris Search for Segelerite using: Visit our Advertisers for Segelerite : Translate Segelerite Mineral Data : Ask about Segelerite here : Print or Cut-and-Paste your Segelerite Specimen Label here :
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