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Hornesite Mineral Data |
General Hornesite Information |
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Mg3(AsO4)2•8(H2O) | ||
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Molecular Weight = 494.88 gm | ||
Magnesium 14.73 % Mg 24.43 % MgO | |||
Arsenic 30.28 % As 46.44 % As2O5 | |||
Hydrogen 3.26 % H 29.12 % H2O | |||
Oxygen 51.73 % O | |||
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100.00 % 100.00 % = TOTAL OXIDE | |||
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Mg3(AsO4)2•8(H2O) | ||
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Lmestone blocks, thermally metamorphosed, in a volcanic tuff (Fiano, Italy). | ||
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Valid Species (Pre-IMA) 1860 | ||
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Banat, Hungary [probably Oravi�ta or Csiklova, Romania]. Link to MinDat.org Location Data. | ||
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Named for Moritz Hornes (1815-1868), Curator of the Imperial Cabinet, Vienna, Austria. | ||
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Hornesite + Pronunciation ![]() |
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Hoernesite | ||
Hornesite Image | |||
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Hornesite Crystallography |
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a:b:c =0.7633:1:0.3526 | ||
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a = 10.26, b = 13.44, c = 4.74, Z = 2; beta = 104.9° V = 631.64 Den(Calc)= 2.60 | ||
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Monoclinic - Prismatic H-M Symbol (2/m) Space Group: I2/m | ||
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By Intensity(I/Io): 6.692(1), 2.712(0.5), 3.005(0.5), | ||
Physical Properties of Hornesite |
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White. | ||
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2.57 | ||
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Transparent | ||
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1 - Talc | ||
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Pearly | ||
Optical Properties of Hornesite |
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CI meas= -0.006 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.006 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2218,KPDmeas= 0.2244,KC= 0.2231 Ncalc = 1.57 - 1.58 |
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Biaxial (+), a=1.563, b=1.571, g=1.596, bire=0.0330, 2V(Calc)=60, 2V(Meas)=60. | ||
Calculated Properties of Hornesite |
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Bulk Density (Electron Density)=2.58 gm/cc note: Specific Gravity of Hornesite =2.60 gm/cc. |
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Fermion Index = 0.01 Boson Index = 0.99 |
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PEHornesite = 20.16 barns/electron U=PEHornesite x rElectron Density= 52.10 barns/cc. |
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GRapi = 0 (Gamma Ray American Petroleum Institute Units) Hornesite is Not Radioactive |
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Hornesite Classification |
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40.03.06.07 (40)Hydrated Phosphates, etc | ||
(40.03)where (A++)3 (XO4)2 � x(H2O) | |||
(40.03.06)Vivianite Group | |||
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08.CE.40 08 - PHOSPHATES, ARSENATES, VANADATES | ||
08.C - Phosphates without Additional Anions, with H2O | |||
08.CE -With only medium-sized cations, RO4:H2O � 1:2.5 | |||
Other Hornesite Information |
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NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
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Links to other databases for Hornesite : 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 Search for Hornesite using: Visit our Advertisers for Hornesite : Ask about Hornesite here : Print or Cut-and-Paste your Hornesite Specimen Label here :
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