General Potassic-magnesiosadanagaite Information
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Chemical Formula: |
(K,Na)Ca2(Mg,Fe++,Al,Ti)5[(Si,Al)8O22](OH)2 |
Composition: |
Molecular Weight = 900.44 gm |
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Potassium 3.26 % K 3.92 % K2O |
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Sodium 0.64 % Na 0.86 % Na2O |
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Calcium 8.90 % Ca 12.46 % CaO |
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Magnesium 6.75 % Mg 11.19 % MgO |
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Titanium 1.33 % Ti 2.22 % TiO2 |
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Aluminum 8.24 % Al 15.57 % Al2O3 |
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Iron 9.30 % Fe 11.97 % FeO |
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Silicon 18.71 % Si 40.04 % SiO2 |
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Hydrogen 0.22 % H 2.00 % H2O |
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Oxygen 42.64 % O |
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______ ______ |
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100.00 % 100.22 % = TOTAL OXIDE |
Empirical Formula: |
K0.75Na0.25Ca2Mg2.5Fe2+1.5Al0.75Ti0.25(Si6Al2O22)(OH)2 |
Environment: |
Banded skarns and recrystallized limestones. Original magnesiosadanagaite (IMA1982-102) was ranamed potassic-magnesiosadanagaite by IMA amphibole nomenclature committee. |
IMA Status: |
Approved IMA 1984 |
Locality: |
Myojin Island, Ehime Prefecture, Japan. Link to MinDat.org Location Data. |
Name Origin: |
Named for the composition and for Ryoichi Sadanaga (1920-), professor emeritus, University of Tokyo. |
Synonym: |
IMA1982-102 |
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Magnesiosadanagaite - 1982 |
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Search for Potassic-magnesiosadanagaite Images |
Images:
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Potassic-magnesiosadanagaite Crystallography
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Axial Ratios: |
a:b:c =0.5537:1:0.2965 |
Cell Dimensions: |
a = 10, b = 18.06, c = 5.355, Z = 2; beta = 105.55° V = 931.71 Den(Calc)= 3.21 |
Crystal System: |
MonoclinicSpace Group: C 2,Cm,C 2/m |
X Ray Diffraction: |
By Intensity(I/Io): 3.28(1), 8.48(0.8), 3.15(0.7), |
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Physical Properties of Potassic-magnesiosadanagaite
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Cleavage: |
[110] Perfect |
Color: |
Dark brown, Black. |
Density: |
3.27 |
Diaphaniety: |
Transparent to Translucent |
Hardness: |
6 - Orthoclase |
Luster: |
Vitreous (Glassy) |
Streak: |
light brown |
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Optical Properties of Potassic-magnesiosadanagaite
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Gladstone-Dale: |
CI meas= 0.007 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= -0.011 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2138,KPDmeas= 0.2099,KC= 0.2114 |
Optical Data: |
Biaxial (-), a=1.674, b=1.686, g=1.699, bire=0.0250, 2V(Calc)=90, 2V(Meas)=90. |
Pleochroism (x): |
colorless or pale brown. |
Pleochroism (z): |
brownish yellow or greenish brown. |
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Calculated Properties of Potassic-magnesiosadanagaite
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Electron Density: |
relectron=3.23 gm/cc note: rPotassic-magnesiosadanagaite =3.27 gm/cc. |
Fermion Index |
Fermion Index = 0.0195 Boson Index = 0.9805 |
Photoelectric: |
PEPotassic-magnesiosadanagaite = 5.50 barns/electron U=PEPotassic-magnesiosadanagaite x relectron= 17.79 barns/cc. |
Radioactivity: |
GRapi = 46.48 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Potassic-magnesiosadanagaite - barely detectable
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Potassic-magnesiosadanagaite Classification
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Dana Class: |
66.1.3a.16 (66)Inosilicate Double-Width Unbranched Chains, W=2 |
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(66.1)Dana Type |
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(66.1.3a)Group 2, the calcic amphiboles |
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66.1.3a.1 Tremolite []Ca2Mg5Si8O22(OH)2 C 2/m 2/m |
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66.1.3a.2 Actinolite Ca2(Mg,Fe)5Si8O22(OH)2 C 2/m 2/m |
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66.1.3a.3 Ferro-actinolite []Ca2Fe5Si8O22(OH)2 C 2/m 2/m |
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66.1.3a.4 Magnesiohornblende Ca2[Mg4(Al,Fe)]Si7AlO22(OH)2 C 2/m 2/m |
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66.1.3a.5 Ferrohornblende []Ca2[Fe4(Al,Fe)]Si7AlO22(OH)2 C 2/m 2/m |
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66.1.3a.6 Tschermakite []Ca2(Mg3AlFe)Si6Al2O22(OH)2 C 2/m 2/m |
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66.1.3a.6a Aluminoferrotschermakite! []Ca2(Fe2)3Al2(Si6Al2)O22(OH)2 C 2/m 2/m |
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66.1.3a.6b Ferri-ferrotschermakite! []Ca2(Fe2)3(Fe3)2(Si6Al2)O22(OH)2 C 2/m 2/m |
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66.1.3a.6c Ferrotschermakite! []Ca2(Fe3AlFe)Si6Al2O22(OH) C 2/m 2/m |
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66.1.3a.7 Ferro-aluminotschermakite* Ca2Fe3Al2(Si7Al)O22(OH)2 C 2/m 2/m |
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66.1.3a.8 Ferritschermakite Ca2(Fe,Mg)3Al2(Si7Al)O22(OH)2 C 2/m 2/m |
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66.1.3a.9 Ferroferritschermakite* Ca2(Fe,Mg)3Fe2(Si7Al)O22(OH)2 C 2/m 2/m |
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66.1.3a.10 Edenite NaCa2Mg5Si7AlO22(OH)2 C 2/m 2/m |
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66.1.3a.10a Fluoro-edenite! NaCa2Mg5Si7AlO22(F,OH)2 C 2/m 2/m |
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66.1.3a.11 Ferro-edenite NaCa2Fe5Si7AlO22(OH)2 C 2/m 2/m |
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66.1.3a.12 Pargasite NaCa2(Mg,Fe)4Al(Si6Al2)O22(OH)2 C 2/m 2/m |
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66.1.3a.12a Potassicpargasite! (K,Na)Ca2(Mg,Fe)5Si8O22(OH,F)2 C 2/m 2/m |
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66.1.3a.13 Ferropargasite NaCa2(Fe4Al)Si6Al2O22(OH)2 C 2/m 2/m |
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66.1.3a.13a Ferrochloropargasite! NaCa2(Fe4Al)Si6Al2O22Cl2 C 2/m 2/m |
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66.1.3a.13b Potassic-chloropargasite! (K,Na)Ca2(Mg,Fe2)4Al(Si6Al2O22)(Cl,OH)2 C 2/m 2/m |
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66.1.3a.14 Magnesiohastingsite NaCa2(Mg4Fe)Si6Al2O22(OH)2 C 2/m 2/m |
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66.1.3a.15 Hastingsite NaCa2(Fe4Fe)Si6Al2O22(OH)2 C 2/m 2/m |
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66.1.3a.15a Potassic-chlorohastingsite! (K,Na)Ca2(Fe,Mg)4Fe[Si6Al2O22](Cl,OH)2 C 2/m 2/m |
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66.1.3a.16 Potassic-magnesiosadanagaite (K,Na)Ca2(Mg,Fe,Al,Ti)5[(Si,Al)8O22](OH)2 C 2,Cm,C 2/m Mono |
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66.1.3a.17 Sadanagaite (K,Na)Ca2(Fe,Mg,Al,Ti)5[(Si,Al)8O22](OH)2 C 2,Cm,C 2/m Mono |
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66.1.3a.17a Potassicsadanagaite! (K,Na)Ca2[Fe3(Al,Fe)2][Si5Al3O22](OH)2 C 2,Cm,C 2/m Mono |
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66.1.3a.17b Potassicferrisadanagaite! (K,Na)Ca2(Fe,Mg)2(Fe,Al)2[Si5Al3O22](OH,F,O)2 C 2/m 2/m |
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66.1.3a.17c Magnesiosadanagaite! NaCa2[Mg3(Al,Fe)2]Si5AlO22(OH)2 C 2/m 2/m |
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66.1.3a.18 Kaersutite NaCa2(Mg4Ti)Si6Al2O23(OH)2 C 2/m 2/m |
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66.1.3a.19 Ferrokaersutite NaCa2(Fe4Ti)Si6Al2O22(OH)2 C 2/m 2/m |
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66.1.3a.20 Fluorocannilloite! CaCa2(Mg4Al)Si5Al3O22F2 C 2/m 2/m |
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66.1.3a.20a Cannilloite! CaCa2Mg4Al(Si5Al3)O22(OH)2 C 2/m 2/m |
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66.1.3a.21 IMA2004-034! ([],Na)(Na,Ca)2(Mg,Fe)4Fe[Si8O22](OH)2 C 2/m 2/m |
Strunz Class: |
VIII/F.10-165 VIII - Silicates |
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VIII/F - Inosilicates (chain and band) double chains [Si4O11]6- , Ca2-Amphiboles |
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VIII/F.10 - Amphibole group, Tremolite - Sadanagaite series |
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VIII/F.10-10 Tremolite []Ca2Mg5Si8O22(OH)2 C 2/m 2/m |
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VIII/F.10-20 Actinolite Ca2(Mg,Fe)5Si8O22(OH)2 C 2/m 2/m |
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VIII/F.10-30 Ferro-actinolite []Ca2Fe5Si8O22(OH)2 C 2/m 2/m |
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VIII/F.10-40 Magnesiohornblende Ca2[Mg4(Al,Fe)]Si7AlO22(OH)2 C 2/m 2/m |
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VIII/F.10-50 Ferrohornblende []Ca2[Fe4(Al,Fe)]Si7AlO22(OH)2 C 2/m 2/m |
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VIII/F.10-60 Tschermakite []Ca2(Mg3AlFe)Si6Al2O22(OH)2 C 2/m 2/m |
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VIII/F.10-65 Aluminoferrotschermakite! []Ca2(Fe2)3Al2(Si6Al2)O22(OH)2 C 2/m 2/m |
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VIII/F.10-70 Ferrotschermakite! []Ca2(Fe3AlFe)Si6Al2O22(OH) C 2/m 2/m |
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VIII/F.10-75 Ferro-aluminotschermakite* Ca2Fe3Al2(Si7Al)O22(OH)2 C 2/m 2/m |
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VIII/F.10-77 Ferritschermakite Ca2(Fe,Mg)3Al2(Si7Al)O22(OH)2 C 2/m 2/m |
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VIII/F.10-80* Ferri-ferrotschermakite! []Ca2(Fe2)3(Fe3)2(Si6Al2)O22(OH)2 C 2/m 2/m |
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VIII/F.10-80 Ferroferritschermakite* Ca2(Fe,Mg)3Fe2(Si7Al)O22(OH)2 C 2/m 2/m |
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VIII/F.10-90 Edenite NaCa2Mg5Si7AlO22(OH)2 C 2/m 2/m |
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VIII/F.10-92 Fluoro-edenite! NaCa2Mg5Si7AlO22(F,OH)2 C 2/m 2/m |
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VIII/F.10-100 Ferro-edenite NaCa2Fe5Si7AlO22(OH)2 C 2/m 2/m |
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VIII/F.10-104 Cannilloite! CaCa2Mg4Al(Si5Al3)O22(OH)2 C 2/m 2/m |
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VIII/F.10-105 Fluorocannilloite! CaCa2(Mg4Al)Si5Al3O22F2 C 2/m 2/m |
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VIII/F.10-110 Pargasite NaCa2(Mg,Fe)4Al(Si6Al2)O22(OH)2 C 2/m 2/m |
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VIII/F.10-120 Ferropargasite NaCa2(Fe4Al)Si6Al2O22(OH)2 C 2/m 2/m |
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VIII/F.10-125 Potassicpargasite! (K,Na)Ca2(Mg,Fe)5Si8O22(OH,F)2 C 2/m 2/m |
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VIII/F.10-130 Magnesiohastingsite NaCa2(Mg4Fe)Si6Al2O22(OH)2 C 2/m 2/m |
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VIII/F.10-140 Hastingsite NaCa2(Fe4Fe)Si6Al2O22(OH)2 C 2/m 2/m |
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VIII/F.10-150 Kaersutite NaCa2(Mg4Ti)Si6Al2O23(OH)2 C 2/m 2/m |
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VIII/F.10-160 Ferrokaersutite NaCa2(Fe4Ti)Si6Al2O22(OH)2 C 2/m 2/m |
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VIII/F.10-163 Potassicsadanagaite! (K,Na)Ca2[Fe3(Al,Fe)2][Si5Al3O22](OH)2 C 2,Cm,C 2/m Mono |
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VIII/F.10-165 Potassic-magnesiosadanagaite (K,Na)Ca2(Mg,Fe,Al,Ti)5[(Si,Al)8O22](OH)2 C 2,Cm,C 2/m Mono |
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VIII/F.10-170 Magnesiosadanagaite! NaCa2[Mg3(Al,Fe)2]Si5AlO22(OH)2 C 2/m 2/m |
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VIII/F.10-180 Sadanagaite (K,Na)Ca2(Fe,Mg,Al,Ti)5[(Si,Al)8O22](OH)2 C 2,Cm,C 2/m Mono |
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VIII/F.10-220 Potassicferrisadanagaite! (K,Na)Ca2(Fe,Mg)2(Fe,Al)2[Si5Al3O22](OH,F,O)2 C 2/m 2/m |
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Other Potassic-magnesiosadanagaite Information
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References: |
NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) |
See Also: |
Links to other databases for Potassic-magnesiosadanagaite :
1 -Am. Min. Crystal Structure Database
2 -Athena
3 -Google Images
4 -Google Scholar
5 -MinDAT
6 -MinMax(Deutsch)
7 -MinMax(English)
8 -Mineralienatlas (Deutsch)
9 -QUT Mineral Atlas
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Potassic-magnesiosadanagaite
(K,Na)Ca2(Mg,Fe++,Al,Ti)5[(Si,Al)8O22](OH)2
Dana No: 66.1.3a.16 Strunz No: VIII/F.10-165
Locality:
Notes:
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