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Agrellite Mineral Data + |
General Agrellite Information |
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| NaCa2Si4O10F | |||
| Molecular Weight = 394.48 gm | |||
| Sodium 5.83 % Na 7.86 % Na2O | |||
| Calcium 20.32 % Ca 28.43 % CaO | |||
| Silicon 28.48 % Si 60.93 % SiO2 | |||
| Oxygen 40.56 % O | |||
| Fluorine 4.82 % F 4.82 % F | |||
| - % F -2.03 % -O=F2 | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| NaCa2(Si4O10)F | |||
| Alkalic igneous rocks of the Sheffield Lake complex. | |||
| Approved IMA 1976 | |||
| Kipawa River, Villieu Township, Temiscaming County, Quebec, Canada. Link to MinDat.org Location Data. | |||
| Named for Stuart O. Agrell, British mineralogist, Cambridge University. | |||
| ICSD 100376 | |||
| IMA1973-032 | |||
| PDF 41-1441 | |||
Agrellite Image | |||
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Agrellite Crystallography |
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| a:b:c =0.4095:1:0.3687 | |||
| a = 7.759, b = 18.946, c = 6.986, Z = 4; alpha = 89.88°, beta = 116.65°, gamma = 94.32° V = 915.25 Den(Calc)= 2.86 | |||
| Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1 | |||
| By Intensity(I/Io): 3.842(1), 3.203(0.84), 9.44(0.8), | |||
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Mouse |
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Physical Properties of Agrellite |
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| [110] Perfect, [110] Perfect, [010] Poor | |||
| White, Grayish white, Greenish white. | |||
| 2.88 - 2.9, Average = 2.88 | |||
| Translucent | |||
| Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape. | |||
| 5.5 - Knife Blade | |||
| Fluorescent. | |||
| Vitreous - Pearly | |||
| white | |||
Optical Properties of Agrellite |
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| CI meas= 0.022 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= 0.011 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2013,KPDmeas= 0.1992,KC= 0.2036 |
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| Biaxial (-), a=1.567, b=1.579, g=1.581, bire=0.0140 | |||
| colorless. | |||
| colorless. | |||
| colorless. | |||
Calculated Properties of Agrellite |
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relectron=2.84 gm/cc |
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| Fermion Index = 0.01376 Boson Index = 0.98624 |
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PEAgrellite = 3.71 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Agrellite is Not Radioactive |
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Agrellite Classification |
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| 70.1.1.4 (70)Inosilicate Column or Tube Structures | |||
| (70.1)with columnar silicate units | |||
| (70.1.1)Dana Group | |||
| VIII/H.15-10 VIII - Silicates | |||
| VIII/H - Phyllosilicates (layered) Mica like layered silicates with [Si4O10]4- and related groups | |||
| VIII/H.15 - Agrellite - Mountainite series | |||
Other Agrellite Information |
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| NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) | |||
| Links to other databases for Agrellite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (MinSocAm) 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 - Minerals of Wisconsin 12 -QUT Mineral Atlas 13 - WWW-MINCRYST Search for Agrellite using: Visit our Advertisers for Agrellite : Translate Agrellite Mineral Data : Ask about Agrellite here : Print or Cut-and-Paste your Agrellite Specimen Label here :
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