General Nyboite Information
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Chemical Formula: |
NaNa2(Mg3Al2)Si7AlO22(OH)2 |
Composition: |
Molecular Weight = 826.37 gm |
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Potassium 0.14 % K 0.17 % K2O |
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Sodium 6.79 % Na 9.15 % Na2O |
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Calcium 1.70 % Ca 2.38 % CaO |
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Magnesium 8.79 % Mg 14.58 % MgO |
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Titanium 0.12 % Ti 0.19 % TiO2 |
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Aluminum 7.02 % Al 13.26 % Al2O3 |
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Iron 4.12 % Fe 3.56 % FeO / 1.93 % Fe2O3 |
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Silicon 24.54 % Si 52.50 % SiO2 |
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Nickel 0.07 % Ni 0.09 % NiO |
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Hydrogen 0.24 % H 2.18 % H2O |
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Oxygen 46.47 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
Na0.79K0.03Na1.65Ca0.35Mg2.99Fe2+0.41Fe3+0.2Al1.37Ti0.02Ni0.01Si7.22Al0.78O22(OH)2 |
Environment: |
Found in eclogite environments. Ultra-high pressure amphibole mineral. |
IMA Status: |
Approved IMA 1981 |
Locality: |
Nybo pod, Nordfjord, Norway. Link to MinDat.org Location Data. |
Name Origin: |
Named for the locality. |
Synonym: |
IMA2002-010 |
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Miyashiroite |
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Nyboite Crystallography
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Axial Ratios: |
a:b:c =0.5444:1:0.2987 |
Cell Dimensions: |
a = 9.665, b = 17.752, c = 5.303, Z = 2; beta = 104.11° V = 882.40 Den(Calc)= 3.11 |
Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m |
X Ray Diffraction: |
By Intensity(I/Io): 2.687(1)(151), 10.65(0.6)(110), 3.079(0.55)(310),2.564(0.36)(061), 2.931(0.32)(221), 4.439(0.31)(040), 2.144(0.28)(261), 1.509(0.26)(263), |
Crystal Structure:
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Raudsepp M , Turnock A C , Hawthorne F C , American Mineralogist , 72 (1987) p.959-964, Characterization of cation ordering in synthetic scandium-fluor-eckermannite,, indium-fluor-eckermannite, and scandium-fluor-nyboite by Rietveld structure, refinement, Sample: FScNY-A3
View Additional jPOWD Structure files for Nyboite
[1]
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Physical Properties of Nyboite
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Cleavage: |
[110] Good, [110] Good |
Color: |
Blue, Gray green. |
Density: |
3.12 |
Diaphaniety: |
Transparent to Translucent |
Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
Habit: |
Inclusions - Generally found as inclusions in other minerals. |
Hardness: |
6 - Orthoclase |
Luster: |
Vitreous (Glassy) |
Streak: |
white |
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Optical Properties of Nyboite
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Gladstone-Dale: |
CI meas= -0.042 (Good) - where the CI = (1-KPDmeas/KC) CI calc= -0.046 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2122,KPDmeas= 0.2115,KC= 0.2029 |
Optical Data: |
Biaxial (-), a=1.65, g=1.67, bire=0.0200 |
Pleochroism (x): |
colorless. |
Pleochroism (y): |
pale brownish pink. |
Pleochroism (z): |
pale bluish green. |
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Calculated Properties of Nyboite
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Electron Density: |
relectron=3.10 gm/cc note: rNyboite =3.12 gm/cc. |
Fermion Index |
Fermion Index = 0.02153 Boson Index = 0.97847 |
Photoelectric: |
PENyboite = 2.93 barns/electron U=PENyboite x relectron= 9.08 barns/cc. |
Radioactivity: |
GRapi = 2.03 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Nyboite - barely detectable
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Nyboite Classification
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Dana Class: |
66.1.3c.11 (66)Inosilicate Double-Width Unbranched Chains, W=2 |
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(66.1)Dana Type |
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(66.1.3c)Group 4, the sodic amphiboles |
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66.1.3c.1 Glaucophane []Na2(Mg3Al2)Si8O22(OH)2 C 2/m 2/m |
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66.1.3c.2 Ferroglaucophane []Na2(Fe3Al2)Si8O22(OH)2 C 2/m 2/m |
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66.1.3c.3 Crossite? Na2(Mg,Fe)3(Al,Fe)2Si8O22(OH)2 C 2/m 2/m |
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66.1.3c.4 Magnesioriebeckite []Na2(Mg3Fe2)Si8O22(OH)2 C 2/m 2/m |
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66.1.3c.5 Riebeckite []Na2(Fe3Fe2)Si8O22(OH)2 C 2/m 2/m |
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66.1.3c.6 Eckermannite NaNa2(Mg4Al)Si8O22(OH)2 C 2/m 2/m |
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66.1.3c.7 Ferro-eckermannite NaNa2(Fe4Al)Si8O22(OH)2 C 2/m 2/m |
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66.1.3c.8 Magnesio-arfvedsonite NaNa2(Mg4Fe)Si8O22(OH)2 C 2/m 2/m |
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66.1.3c.9 Arfvedsonite NaNa2(Fe4Fe)Si8O22(OH)2 C 2/m 2/m |
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66.1.3c.9a Fluoro-magnesio-arfvedsonite! NaNa2(Mg,Fe)4Fe[Si8O22](F,OH)2 C 2/m 2/m |
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66.1.3c.9b Potassicarfvedsonite! KNa2Fe4FeSi8O22(OH)2 C 2/m 2/m |
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66.1.3c.10 Kozulite NaNa2Mn4(Fe,Al)Si8O22(OH)2 C 2/m 2/m |
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66.1.3c.11 Nyboite NaNa2(Mg3Al2)Si7AlO22(OH)2 C 2/m 2/m |
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66.1.3c.11a Ferronyboite! NaNa2(Fe)3Al2(Si7Al)O22(OH)2 C 2/m 2/m |
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66.1.3c.11b Ferric-ferronyboite! NaNa2(Fe)3(Fe)2(Si7Al)O22(OH)2 C 2/m 2/m |
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66.1.3c.11c Fluoronyboite! NaNa2(Al2Mg3)(Si7Al)O22(F,OH)2 C 2/m 2/m |
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66.1.3c.12 Leakeite NaNa2(Mg2Fe2Li)Si8O22(OH)2 C 2/m 2/m |
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66.1.3c.12a Ferroleakeite! NaNa2(Fe)3(Fe)2Li(Si8O22)(OH)2 C 2/m 2/m |
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66.1.3c.12b Potassicleakeite! KNa2Mg2Fe2LiSi8O22(OH)2 C 2/m 2/m |
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66.1.3c.13 Kornite Na(CaNa)Fe4(Al,Fe)Si7AlO22(OH)2 C 2/m 2/m |
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66.1.3c.14 Ungarettiite NaNa2(Mn2Mn3)Si8O22O2 C 2/m 2/m |
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66.1.3c.15 Fluoro-ferroleakeite NaNa2(Fe2Fe2Li)Si8O22F2 C 2/m 2/m |
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66.1.3c.16 Obertiite! NaNa2(Mg3FeTi)Si8O22(O,F,OH)2 C 2/m 2/m |
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66.1.3c.17 Dellaventuraite! NaNa2(Mg2,Mn,Li,Ti)Si8O22O2 C 2/m 2/m |
Strunz Class: |
VIII/F.08-60 VIII - Silicates |
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VIII/F - Inosilicates (chain and band) double chains [Si4O11]6-, Alkali-Amphiboles |
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VIII/F.08 - Amphibole group, Glaucophane - Riebeckite - Kozulite series |
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VIII/F.08-10 Glaucophane []Na2(Mg3Al2)Si8O22(OH)2 C 2/m 2/m |
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VIII/F.08-20 Ferroglaucophane []Na2(Fe3Al2)Si8O22(OH)2 C 2/m 2/m |
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VIII/F.08-30 Crossite? Na2(Mg,Fe)3(Al,Fe)2Si8O22(OH)2 C 2/m 2/m |
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VIII/F.08-40 Magnesioriebeckite []Na2(Mg3Fe2)Si8O22(OH)2 C 2/m 2/m |
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VIII/F.08-50 Riebeckite []Na2(Fe3Fe2)Si8O22(OH)2 C 2/m 2/m |
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VIII/F.08-56 Fluoronyboite! NaNa2(Al2Mg3)(Si7Al)O22(F,OH)2 C 2/m 2/m |
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VIII/F.08-60 Nyboite NaNa2(Mg3Al2)Si7AlO22(OH)2 C 2/m 2/m |
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VIII/F.08-65 Ferronyboite! NaNa2(Fe)3Al2(Si7Al)O22(OH)2 C 2/m 2/m |
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VIII/F.08-67 Ferric-ferronyboite! NaNa2(Fe)3(Fe)2(Si7Al)O22(OH)2 C 2/m 2/m |
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VIII/F.08-70 Eckermannite NaNa2(Mg4Al)Si8O22(OH)2 C 2/m 2/m |
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VIII/F.08-80 Ferro-eckermannite NaNa2(Fe4Al)Si8O22(OH)2 C 2/m 2/m |
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VIII/F.08-81 Ferripedrizite! NaLi2(Fe2Mg2Li)Si8O22(OH)2 C 2/m 2/m |
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VIII/F.08-83 Sodic-ferripedrizite! Na(LiNa)(Fe2Mg2Li)Si8O22(OH,F)2 C 2/m 2/m |
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VIII/F.08-84 Ferroleakeite! NaNa2(Fe)3(Fe)2Li(Si8O22)(OH)2 C 2/m 2/m |
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VIII/F.08-85 Leakeite NaNa2(Mg2Fe2Li)Si8O22(OH)2 C 2/m 2/m |
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VIII/F.08-86 Fluoro-ferroleakeite NaNa2(Fe2Fe2Li)Si8O22F2 C 2/m 2/m |
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VIII/F.08-87 Kornite Na(CaNa)Fe4(Al,Fe)Si7AlO22(OH)2 C 2/m 2/m |
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VIII/F.08-88 Ungarettiite NaNa2(Mn2Mn3)Si8O22O2 C 2/m 2/m |
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VIII/F.08-89 Obertiite! NaNa2(Mg3FeTi)Si8O22(O,F,OH)2 C 2/m 2/m |
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VIII/F.08-90 Magnesio-arfvedsonite NaNa2(Mg4Fe)Si8O22(OH)2 C 2/m 2/m |
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VIII/F.08-92 Fluoro-magnesio-arfvedsonite! NaNa2(Mg,Fe)4Fe[Si8O22](F,OH)2 C 2/m 2/m |
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VIII/F.08-95 Sodic-ferri-ferropedrizite! NaLi2(Fe2Fe3)Si8O22(OH)2 C 2/m 2/m |
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VIII/F.08-100 Arfvedsonite NaNa2(Fe4Fe)Si8O22(OH)2 C 2/m 2/m |
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VIII/F.08-105 Ferriwhittakerite! Na(NaLi)(Mg2Fe2Li)Si8O22(OH)2 C 2/m 2/m |
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VIII/F.08-110 Kozulite NaNa2Mn4(Fe,Al)Si8O22(OH)2 C 2/m 2/m |
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VIII/F.08-112 Potassicleakeite! KNa2Mg2Fe2LiSi8O22(OH)2 C 2/m 2/m |
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VIII/F.08-125 Dellaventuraite! NaNa2(Mg2,Mn,Li,Ti)Si8O22O2 C 2/m 2/m |
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VIII/F.08-157 Potassicarfvedsonite! KNa2Fe4FeSi8O22(OH)2 C 2/m 2/m |
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Other Nyboite Information
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References: |
NAME( Dana8) PHYS. PROP.(MinMag, v 64, p 769) OPTIC PROP.(MinMag, v 64, p 769) |
See Also: |
Links to other databases for Nyboite :
1 -Am. Min. Crystal Structure Database
2 -Athena
3 - EUROmin Project
4 -Google Images
5 -Google Scholar
6 -Handbook of Mineralogy (MinSocAm)
7 -Handbook of Mineralogy (UofA)
8 -MinDAT
9 -MinMax(Deutsch)
10 -MinMax(English)
11 -Mineralienatlas (Deutsch)
12 -QUT Mineral Atlas
13 - WWW-MINCRYST
14 -École des Mines de Paris
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Print or Cut-and-Paste your Nyboite Specimen Label here :
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Nyboite
NaNa2(Mg3Al2)Si7AlO22(OH)2
Dana No: 66.1.3c.11 Strunz No: VIII/F.08-60
Locality:
Notes:
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