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Hiortdahlite Mineral Data + |
General Hiortdahlite Information |
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| (Ca,Na,Y)3(Zr,Ti)Si2O7(F,O,OH)2 | |||
| Molecular Weight = 371.93 gm | |||
| Sodium 5.56 % Na 7.50 % Na2O | |||
| Calcium 21.55 % Ca 30.16 % CaO | |||
| Yttrium 2.39 % Y 3.04 % Y2O3 | |||
| Zirconium 14.72 % Zr 19.88 % ZrO2 | |||
| Titanium 1.29 % Ti 2.15 % TiO2 | |||
| Silicon 15.10 % Si 32.31 % SiO2 | |||
| Hydrogen 0.05 % H 0.48 % H2O | |||
| Oxygen 32.69 % O | |||
| Fluorine 6.64 % F 6.64 % F | |||
| - % F -2.80 % -O=F2 | |||
| ______ ______ | |||
| 100.00 % 99.35 % = TOTAL OXIDE | |||
| Ca2Na0.9Y0.1Zr0.6Ti0.1(Si2O7)F1.3O0.4(OH)0.2 | |||
| Rare mineral in alkalic rocks, their pegmatites and metamorphosed equivalents and miarolitic cavities in sanidinites. | |||
| Valid Species (Pre-IMA) 1889 | |||
| Mittel Aro, Lille Aro, and Stokko Islands, Norway. Link to MinDat.org Location Data. | |||
| Named for prof. Thorstein Hallager Hiortdahl (1839-1925), Mineralogist of Christiania (now Olso), Norway. | |||
Hiortdahlite Image | |||
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Hiortdahlite Crystallography |
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| a:b:c =1.0601:1:0.7109 | |||
| a = 10.93, b = 10.31, c = 7.33, Z = 4; alpha = 90.32°, beta = 109.03°, gamma = 90.08° V = 780.85 Den(Calc)= 3.16 | |||
| Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1 | |||
| By Intensity(I/Io): 2.87(1), 3(0.9), 3.28(0.45), | |||
Physical Properties of Hiortdahlite |
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| [110] Distinct, [110] Distinct | |||
| Brown, Colorless, Yellow brown, Honey yellow, Light yellow. | |||
| 3.267 | |||
| Transparent to Translucent | |||
| Brittle - Generally displayed by glasses and most non-metallic minerals. | |||
| Tabular - Form dimensions are thin in one direction. | |||
| 5.5 - Knife Blade | |||
| Vitreous - Greasy | |||
| white | |||
Optical Properties of Hiortdahlite |
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| CI meas= 0.025 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= -0.008 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2068,KPDmeas= 0.2,KC= 0.2051 |
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| Biaxial (+), a=1.639-1.658, b=1.643-1.664, g=1.646-1.671, bire=0.0070-0.0130, 2V(Calc)=80-86, 2V(Meas)=80. Dispersion r < v strong. | |||
| nearly colorless. | |||
| bright yellow. | |||
| wine yellow. | |||
Calculated Properties of Hiortdahlite |
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relectron=3.07 gm/cc |
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| Fermion Index = 0.02567 Boson Index = 0.97433 |
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PEHiortdahlite = 25.99 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Hiortdahlite is Not Radioactive |
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Hiortdahlite Classification |
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| 56.2.4.7 (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O | |||
| (56.2)with cations in [4] and/or >[4] coordination | |||
| (56.2.4)Cuspidine - Wohlerite group | |||
| VIII/C.11-50 VIII - Silicates | |||
| VIII/C - Sorosilicates with [Si2O7]6-, with anions unfamiliar to tetraheders [O,OH,F] | |||
| VIII/C.11 - Wöhlerite - Lavenite series | |||
Other Hiortdahlite Information |
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| NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic2) | |||
| Links to other databases for Hiortdahlite : 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 (MinSocAm) 9 -Handbook of Mineralogy (UofA) 10 -MinDAT 11 -MinMax(Deutsch) 12 -MinMax(English) 13 -Mineralienatlas (Deutsch) 14 -QUT Mineral Atlas 15 - WWW-MINCRYST 16 -École des Mines de Paris Search for Hiortdahlite using: Visit our Advertisers for Hiortdahlite : Translate Hiortdahlite Mineral Data : Ask about Hiortdahlite here : Print or Cut-and-Paste your Hiortdahlite Specimen Label here :
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