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Gatehouseite Mineral Data |
General Gatehouseite Information |
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Mn++5(PO4)2(OH)4 | |
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Molecular Weight = 532.66 gm | |
Manganese 51.57 % Mn 66.59 % MnO | ||
Phosphorus 11.63 % P 26.65 % P2O5 | ||
Hydrogen 0.76 % H 6.76 % H2O | ||
Oxygen 36.04 % O | ||
______ ______ | ||
100.00 % 100.00 % = TOTAL OXIDE | ||
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Mn2+5(PO4)2(OH)4 | |
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Secondary mineral in cavities in a sedimentary Fe�Mn deposit, probably formed by reaction of phosphorus-rich fluids with hausmannite at low temperature. | |
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Approved IMA 1993 | |
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Iron Monarch quarry, Iron Knob, South Australia. Link to MinDat.org Location Data. | |
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Named for Bryan Michael Kenneth Cummings Gatehouse (1932- ), crystal chemist, Monash University, Melbourne, Australia. | |
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Gatehouseite + Pronunciation ![]() |
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ICSD 1198 | |
IMA1992-016 | ||
PDF 47-1822 | ||
Gatehouseite Crystallography |
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By Intensity(I/Io): 2.9(1), 2.702(0.8), 2.853(0.7), | |
Physical Properties of Gatehouseite |
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Yellow, Yellow, Pale orange. | |
Optical Properties of Gatehouseite |
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CI meas= 0.012 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.025 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1979,KPDmeas= 0.2005,KC= 0.2029 Ncalc = 1.76 - 1.77 |
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Calculated Properties of Gatehouseite |
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Bulk Density (Electron Density)=3.58 gm/cc note: Specific Gravity of Gatehouseite =3.74 gm/cc. |
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Fermion Index = 0.0001741466 Boson Index = 0.9998258534 |
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PEGatehouseite = 13.88 barns/electron U=PEGatehouseite x rElectron Density= 49.71 barns/cc. |
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GRapi = 0 (Gamma Ray American Petroleum Institute Units) Gatehouseite is Not Radioactive |
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Gatehouseite Classification |
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41.04.01.02 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen | |
(41.04)where (A B)5 (XO4)2 Zq | ||
(41.04.01)Dana Group | ||
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08.BD.10 08 - PHOSPHATES, ARSENATES, VANADATES | |
08.B - Phosphates, etc. with Additional Anions, without H2O | ||
08.BD -With only medium-sized cations, (OH, etc.):RO4 = 2:1 | ||
Other Gatehouseite Information |
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Links to other databases for Gatehouseite : 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 Gatehouseite using: Visit our Advertisers for Gatehouseite :
Dakota Matrix Google Search for Gatehouseite Ask about Gatehouseite here : Print or Cut-and-Paste your Gatehouseite Specimen Label here :
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