General Englishite Information![]() K3Na2Ca10Al15(PO4)21(OH)7•26(H2O) |
![]() Molecular Weight = 3,550.62 gm |
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Potassium 3.30 % K 3.98 % K2O |
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Sodium 1.29 % Na 1.75 % Na2O |
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Calcium 11.29 % Ca 15.79 % CaO |
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Aluminum 11.40 % Al 21.54 % Al2O3 |
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Phosphorus 18.32 % P 41.98 % P2O5 |
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Hydrogen 1.67 % H 14.97 % H2O |
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Oxygen 52.72 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
![]() K3Na2Ca10Al15(PO4)21(OH)7•26(H2O) |
![]() In variscite nodules. |
![]() Valid Species (Pre-IMA) 1930 |
![]() Clay Canyon, Fairfield, Utah County, Utah, USA. Link to MinDat.org Location Data. |
![]() Named for George L. English (1864-1944), American mineral dealer and collector. |
![]() Englishite + Pronunciation |
![]() | | Englishite Image
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Englishite Crystallography![]() a:b:c =3.2403:1:1.7428 |
![]() a = 38.43, b = 11.86, c = 20.67, Z = 4; beta = 111.27° V = 8,779.22 Den(Calc)= 2.69 |
![]() Monoclinic - SphenoidalH-M Symbol (2) Space Group: A2 or Aa |
![]() By Intensity(I/Io): 9.3(1), 2.86(0.7), 1.72(0.6), |
| Physical Properties of Englishite![]() {001} Perfect |
![]() Colorless, White. |
![]() 2.68 |
![]() Transparent to Translucent |
![]() Aggregates - Made of numerous individual crystals or clusters. |
![]() Friable - Loosley cohesive material that granulates with your fingers. |
![]() Micaceous - Platy texture with "flexible" plates. |
![]() 3 - Calcite |
![]() Non-fluorescent. |
![]() Vitreous - Pearly |
![]() Nonmagnetic |
![]() white |
| Optical Properties of Englishite![]() CI meas= 0.016 (Superior) - where the CI = (1-KPDmeas/KC) |
CI calc= 0.02 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2123,KPDmeas= 0.2131,KC= 0.2166 Ncalc = 1.58 ![]() Biaxial (-), a=1.57, g=1.572, bire=0.0020 |
| Calculated Properties of Englishite![]() Bulk Density (Electron Density)=2.69 gm/cc |
note: Specific Gravity of Englishite =2.68 gm/cc. ![]() Fermion Index = 0.0004119204 |
Boson Index = 0.9995880796 ![]() PEEnglishite = 2.96 barns/electron |
U=PEEnglishite x relectron= 7.97 barns/cc. ![]() |
GRapi = 47.90 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Englishite | Englishite Classification![]() 42.13.08.01 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen |
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(42.13)Dana Type |
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(42.13.08)Dana Group |
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![]() 08.DH.55 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.D - Phosphates, etc |
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08.DH -With large and medium-sized cations, (OH, etc.):RO4 < 1:1 |
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| Other Englishite Information![]() NAME( Dana8) PHYS. PROP.(Dana) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
![]() Links to other databases for Englishite : |
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 Englishite using: Visit our Advertisers for Englishite : A Bijoux Google Search for EnglishiteAdam's Minerals Google Search for Englishite Cape Minerals Google Search for Englishite Dakota Matrix Minerals Google Search for Englishite Excalibur Mineral Corp. Google Search for Englishite Exceptional Minerals Google Search for Englishite John Betts Fine Minerals Search for Englishite McDougall Minerals Google Search for Englishite Mineral News Website Link Rock and Mineral Shows Google Search for Englishite Weinrich Minerals, Inc. Google Search for Englishite Ask about Englishite here : Print or Cut-and-Paste your Englishite Specimen Label here :
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