General Ashcroftine-(Y) Information![]() K5Na5(Y,Ca)12Si28O70(OH)2(CO3)8•8(H2O) |
![]() Molecular Weight = 3,810.20 gm |
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Potassium 5.13 % K 6.18 % K2O |
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Sodium 3.02 % Na 4.07 % Na2O |
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Calcium 2.10 % Ca 2.94 % CaO |
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Yttrium 23.33 % Y 29.63 % Y2O3 |
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Silicon 20.64 % Si 44.15 % SiO2 |
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Hydrogen 0.42 % H 3.78 % H2O |
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Carbon 2.52 % C 9.24 % CO2 |
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Oxygen 42.83 % O |
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______ ______ |
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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. |
![]() Ashcroftine-(Y) + Pronunciation |
![]() ![]() ICSD 202506 |
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PDF 22-508 |
| | Search for Ashcroftine-(Y) Images
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| | Ashcroftine-(Y) Crystallography![]() 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)![]() {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)![]() 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 Ncalc = 1.5 - 1.52 ![]() Uniaxial (+), w=1.536-1.537, e=1.545-1.549, bire=0.0090-0.0120. |
| Calculated Properties of Ashcroftine-(Y)![]() Bulk Density (Electron Density)=2.54 gm/cc |
note: Specific Gravity of Ashcroftine-(Y) =2.61 gm/cc. ![]() Fermion Index = 0.01 |
Boson Index = 0.99 ![]() PEAshcroftine-(Y) = 29.86 barns/electron |
U=PEAshcroftine-(Y) x relectron= 75.75 barns/cc. ![]() |
GRapi = 71.98 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Ashcroftine-(Y) | Ashcroftine-(Y) Classification![]() 70.03.01.01 (70)Inosilicate Column or Tube Structures |
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(70.03)with balo-silicates |
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(70.03.01)Dana Group |
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![]() 09.DN.15 09 - SILICATES (Germanates) |
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09.D - Inosilicates* Structural terminology according to Liebau (1985) |
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09.DN -Inosilicates with 6-periodic double chains |
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| Other Ashcroftine-(Y) Information![]() 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 - GeoScienceWorld 7 - Google Images 8 - Google Scholar 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 Ashcroftine-(Y) using: Visit our Advertisers for Ashcroftine-(Y) : A Bijoux Google Search for Ashcroftine-(Y)Adam's Minerals Google Search for Ashcroftine-(Y) Cape Minerals Google Search for Ashcroftine-(Y) Dakota Matrix Minerals Google Search for Ashcroftine-(Y) Excalibur Mineral Corp. Google Search for Ashcroftine-(Y) Exceptional Minerals Google Search for Ashcroftine-(Y) John Betts Fine Minerals Search for Ashcroftine-(Y) McDougall Minerals Google Search for Ashcroftine-(Y) Mineral News Website Link Rock and Mineral Shows Google Search for Ashcroftine-(Y) Weinrich Minerals, Inc. Google Search for Ashcroftine-(Y) Ask about Ashcroftine-(Y) here : Print or Cut-and-Paste your Ashcroftine-(Y) Specimen Label here :
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