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Ashcroftine-(Y) Mineral Data + |
General Ashcroftine-(Y) Information |
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| K5Na5(Y,Ca)12Si28O70(OH)2(CO3)8·8(H2O) | |||
| Molecular Weight = 3,810.20 gm | |||
| Potassium 5.13 % K 6.18 % K2O | |||
| Sodium 3.02 % Na 4.07 % Na2O | |||
| Calcium 2.10 % Ca 2.94 % CaO | |||
| Yttrium 23.33 % Y 29.63 % Y2O3 | |||
| Silicon 20.64 % Si 44.15 % SiO2 | |||
| Hydrogen 0.42 % H 3.78 % H2O | |||
| Carbon 2.52 % C 9.24 % CO2 | |||
| Oxygen 42.83 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| K5Na5Y10Ca2Si28O70(CO3)8·8(H2O) | |||
| In nepheline syenites. | |||
| Valid Species (Pre-IMA) 1933 | |||
| From Narssarssuk, Greenland. Link to MinDat.org Location Data. | |||
| Named for Frederick Noel Ashcroft (1878-1949), benefactor to the British Museum (Natural History), London, England. | |||
| ICSD 202506 | |||
| PDF 22-508 | |||
Search for Ashcroftine-(Y) Images | |||
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Ashcroftine-(Y) Crystallography |
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| a:c = 1:0.72984 | |||
| a = 23.994, c = 17.512, Z = 4; V = 10,081.87 Den(Calc)= 2.51 | |||
| Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: I 4/mmm | |||
| By Intensity(I/Io): 17.1(1), 12.043(0.8), 7.615(0.6),2.687(0.5), 3.114(0.5), 5.379(0.35), 6.014(0.3), | |||
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Physical Properties of Ashcroftine-(Y) |
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| [100] Perfect, [001] Distinct | |||
| Light violet, Pink, Pinkish brown, Deep violet. | |||
| 2.61 | |||
| Transparent to Translucent | |||
| Flexible - Flexible fragments. | |||
| Fibrous - Crystals made up of fibers. | |||
| Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). | |||
| 5 - Apatite | |||
| Vitreous - Silky | |||
| white | |||
Optical Properties of Ashcroftine-(Y) |
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| CI meas= -0.035 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= -0.076 (Fair) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2158,KPDmeas= 0.2076,KC= 0.2006 |
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| Uniaxial (+), w=1.536-1.537, e=1.545-1.549, bire=0.0090-0.0120. | |||
Calculated Properties of Ashcroftine-(Y) |
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relectron=2.54 gm/cc |
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| Fermion Index = 0.01015 Boson Index = 0.98985 |
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PEAshcroftine-(Y) = 29.86 barns/electron |
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| GRapi = 71.98 (Gamma Ray American Petroleum Institute Units) Estimated Radioactivity from Ashcroftine-(Y) |
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Ashcroftine-(Y) Classification |
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| 70.3.1.1 (70)Inosilicate Column or Tube Structures | |||
| (70.3)with balo-silicates | |||
| (70.3.1)Dana Group | |||
| VIII/F.36-60 VIII - Silicates | |||
| VIII/F - Inosilicates (chain and band) complex chain structure. Cylindric chains and others | |||
| VIII/F.36 - Caysichite-(Y) - Tadzhikite-(Ce) series | |||
Other Ashcroftine-(Y) Information |
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| NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | |||
| Links to other databases for Ashcroftine-(Y) : 1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 -Am. Min. Crystal Structure Database 4 -Athena 5 - EUROmin Project 6 -Google Images 7 -Google Scholar 8 -Handbook of Mineralogy (UofA) 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 -Mineralienatlas (Deutsch) 13 -QUT Mineral Atlas 14 - WWW-MINCRYST Search for Ashcroftine-(Y) using: Visit our Advertisers for Ashcroftine-(Y) : Translate Ashcroftine-(Y) Mineral Data : Ask about Ashcroftine-(Y) here : Print or Cut-and-Paste your Ashcroftine-(Y) Specimen Label here :
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