Potassic-magnesiosadanagaite Mineral Data

Potassic-magnesiosadanagaite Mineral Data

General Potassic-magnesiosadanagaite Information

Chemical Formula:

(K,Na)Ca2(Mg,Fe++,Al,Ti)5[(Si,Al)8O22](OH)2

Composition:

Molecular Weight = 900.44 gm

Potassium 3.26 % K 3.92 % K₂O

Sodium 0.64 % Na 0.86 % Na₂O

Calcium 8.90 % Ca 12.46 % CaO

Magnesium 6.75 % Mg 11.19 % MgO

Titanium 1.33 % Ti 2.22 % TiO₂

Aluminum 8.24 % Al 15.57 % Al₂O₃

Iron 9.30 % Fe 11.97 % FeO

Silicon 18.71 % Si 40.04 % SiO₂

Hydrogen 0.22 % H 2.00 % H₂O

Oxygen 42.64 % O

______ ______

100.00 % 100.22 % = TOTAL OXIDE

Empirical Formula:

K_0.75Na_0.25Ca₂Mg_2.5Fe²⁺_1.5Al_0.75Ti_0.25(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

Magnesiosadanagaite - 1982

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Potassic-magnesiosadanagaite Crystallography

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

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.28(1), 8.48(0.8), 3.15(0.7),

Physical Properties of Potassic-magnesiosadanagaite

Cleavage:

[110] Perfect

Color:

Dark brown, Black.

Density:

3.27

Diaphaniety:

Transparent to Translucent

Hardness:

6 - Orthoclase

Luster:

Vitreous (Glassy)

Streak:

light brown

Optical Properties of Potassic-magnesiosadanagaite

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.

Calculated Properties of Potassic-magnesiosadanagaite

Electron Density:

r_electron=3.23 gm/cc
note: r_{Potassic-magnesiosadanagaite}=3.27 gm/cc.

Fermion Index

Fermion Index = 0.0195
Boson Index = 0.9805

Photoelectric:

PE_{Potassic-magnesiosadanagaite}= 5.50 barns/electron
U=PE_{Potassic-magnesiosadanagaite} x r_electron= 17.79 barns/cc.

Radioactivity:

GRapi = 46.48 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Potassic-magnesiosadanagaite - barely detectable

Potassic-magnesiosadanagaite Classification

Dana Class:

66.1.3a.16 (66)Inosilicate Double-Width Unbranched Chains, W=2

(66.1)Dana Type

(66.1.3a)Group 2, the calcic amphiboles

66.1.3a.1 Tremolite []Ca2Mg5Si8O22(OH)2 C 2/m 2/m

66.1.3a.2 Actinolite Ca2(Mg,Fe)5Si8O22(OH)2 C 2/m 2/m

66.1.3a.3 Ferro-actinolite []Ca2Fe5Si8O22(OH)2 C 2/m 2/m

66.1.3a.4 Magnesiohornblende Ca2[Mg4(Al,Fe)]Si7AlO22(OH)2 C 2/m 2/m

66.1.3a.5 Ferrohornblende []Ca2[Fe4(Al,Fe)]Si7AlO22(OH)2 C 2/m 2/m

66.1.3a.6 Tschermakite []Ca2(Mg3AlFe)Si6Al2O22(OH)2 C 2/m 2/m

66.1.3a.6a Aluminoferrotschermakite! []Ca2(Fe2)3Al2(Si6Al2)O22(OH)2 C 2/m 2/m

66.1.3a.6b Ferri-ferrotschermakite! []Ca2(Fe2)3(Fe3)2(Si6Al2)O22(OH)2 C 2/m 2/m

66.1.3a.6c Ferrotschermakite! []Ca2(Fe3AlFe)Si6Al2O22(OH) C 2/m 2/m

66.1.3a.7 Ferro-aluminotschermakite* Ca2Fe3Al2(Si7Al)O22(OH)2 C 2/m 2/m

66.1.3a.8 Ferritschermakite Ca2(Fe,Mg)3Al2(Si7Al)O22(OH)2 C 2/m 2/m

66.1.3a.9 Ferroferritschermakite* Ca2(Fe,Mg)3Fe2(Si7Al)O22(OH)2 C 2/m 2/m

66.1.3a.10 Edenite NaCa2Mg5Si7AlO22(OH)2 C 2/m 2/m

66.1.3a.10a Fluoro-edenite! NaCa2Mg5Si7AlO22(F,OH)2 C 2/m 2/m

66.1.3a.11 Ferro-edenite NaCa2Fe5Si7AlO22(OH)2 C 2/m 2/m

66.1.3a.12 Pargasite NaCa2(Mg,Fe)4Al(Si6Al2)O22(OH)2 C 2/m 2/m

66.1.3a.12a Potassicpargasite! (K,Na)Ca2(Mg,Fe)5Si8O22(OH,F)2 C 2/m 2/m

66.1.3a.13 Ferropargasite NaCa2(Fe4Al)Si6Al2O22(OH)2 C 2/m 2/m

66.1.3a.13a Ferrochloropargasite! NaCa2(Fe4Al)Si6Al2O22Cl2 C 2/m 2/m

66.1.3a.13b Potassic-chloropargasite! (K,Na)Ca2(Mg,Fe2)4Al(Si6Al2O22)(Cl,OH)2 C 2/m 2/m

66.1.3a.14 Magnesiohastingsite NaCa2(Mg4Fe)Si6Al2O22(OH)2 C 2/m 2/m

66.1.3a.15 Hastingsite NaCa2(Fe4Fe)Si6Al2O22(OH)2 C 2/m 2/m

66.1.3a.15a Potassic-chlorohastingsite! (K,Na)Ca2(Fe,Mg)4Fe[Si6Al2O22](Cl,OH)2 C 2/m 2/m

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

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

66.1.3a.17a Potassicsadanagaite! (K,Na)Ca2[Fe3(Al,Fe)2][Si5Al3O22](OH)2 C 2,Cm,C 2/m Mono

66.1.3a.17b Potassicferrisadanagaite! (K,Na)Ca2(Fe,Mg)2(Fe,Al)2[Si5Al3O22](OH,F,O)2 C 2/m 2/m

66.1.3a.17c Magnesiosadanagaite! NaCa2[Mg3(Al,Fe)2]Si5AlO22(OH)2 C 2/m 2/m

66.1.3a.18 Kaersutite NaCa2(Mg4Ti)Si6Al2O23(OH)2 C 2/m 2/m

66.1.3a.19 Ferrokaersutite NaCa2(Fe4Ti)Si6Al2O22(OH)2 C 2/m 2/m

66.1.3a.20 Fluorocannilloite! CaCa2(Mg4Al)Si5Al3O22F2 C 2/m 2/m

66.1.3a.20a Cannilloite! CaCa2Mg4Al(Si5Al3)O22(OH)2 C 2/m 2/m

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

VIII/F - Inosilicates (chain and band) double chains [Si4O11]6- , Ca2-Amphiboles

VIII/F.10 - Amphibole group, Tremolite - Sadanagaite series

VIII/F.10-10 Tremolite []Ca2Mg5Si8O22(OH)2 C 2/m 2/m

VIII/F.10-20 Actinolite Ca2(Mg,Fe)5Si8O22(OH)2 C 2/m 2/m

VIII/F.10-30 Ferro-actinolite []Ca2Fe5Si8O22(OH)2 C 2/m 2/m

VIII/F.10-40 Magnesiohornblende Ca2[Mg4(Al,Fe)]Si7AlO22(OH)2 C 2/m 2/m

VIII/F.10-50 Ferrohornblende []Ca2[Fe4(Al,Fe)]Si7AlO22(OH)2 C 2/m 2/m

VIII/F.10-60 Tschermakite []Ca2(Mg3AlFe)Si6Al2O22(OH)2 C 2/m 2/m

VIII/F.10-65 Aluminoferrotschermakite! []Ca2(Fe2)3Al2(Si6Al2)O22(OH)2 C 2/m 2/m

VIII/F.10-70 Ferrotschermakite! []Ca2(Fe3AlFe)Si6Al2O22(OH) C 2/m 2/m

VIII/F.10-75 Ferro-aluminotschermakite* Ca2Fe3Al2(Si7Al)O22(OH)2 C 2/m 2/m

VIII/F.10-77 Ferritschermakite Ca2(Fe,Mg)3Al2(Si7Al)O22(OH)2 C 2/m 2/m

VIII/F.10-80* Ferri-ferrotschermakite! []Ca2(Fe2)3(Fe3)2(Si6Al2)O22(OH)2 C 2/m 2/m

VIII/F.10-80 Ferroferritschermakite* Ca2(Fe,Mg)3Fe2(Si7Al)O22(OH)2 C 2/m 2/m

VIII/F.10-90 Edenite NaCa2Mg5Si7AlO22(OH)2 C 2/m 2/m

VIII/F.10-92 Fluoro-edenite! NaCa2Mg5Si7AlO22(F,OH)2 C 2/m 2/m

VIII/F.10-100 Ferro-edenite NaCa2Fe5Si7AlO22(OH)2 C 2/m 2/m

VIII/F.10-104 Cannilloite! CaCa2Mg4Al(Si5Al3)O22(OH)2 C 2/m 2/m

VIII/F.10-105 Fluorocannilloite! CaCa2(Mg4Al)Si5Al3O22F2 C 2/m 2/m

VIII/F.10-110 Pargasite NaCa2(Mg,Fe)4Al(Si6Al2)O22(OH)2 C 2/m 2/m

VIII/F.10-120 Ferropargasite NaCa2(Fe4Al)Si6Al2O22(OH)2 C 2/m 2/m

VIII/F.10-125 Potassicpargasite! (K,Na)Ca2(Mg,Fe)5Si8O22(OH,F)2 C 2/m 2/m

VIII/F.10-130 Magnesiohastingsite NaCa2(Mg4Fe)Si6Al2O22(OH)2 C 2/m 2/m

VIII/F.10-140 Hastingsite NaCa2(Fe4Fe)Si6Al2O22(OH)2 C 2/m 2/m

VIII/F.10-150 Kaersutite NaCa2(Mg4Ti)Si6Al2O23(OH)2 C 2/m 2/m

VIII/F.10-160 Ferrokaersutite NaCa2(Fe4Ti)Si6Al2O22(OH)2 C 2/m 2/m

VIII/F.10-163 Potassicsadanagaite! (K,Na)Ca2[Fe3(Al,Fe)2][Si5Al3O22](OH)2 C 2,Cm,C 2/m Mono

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

VIII/F.10-170 Magnesiosadanagaite! NaCa2[Mg3(Al,Fe)2]Si5AlO22(OH)2 C 2/m 2/m

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

VIII/F.10-220 Potassicferrisadanagaite! (K,Na)Ca2(Fe,Mg)2(Fe,Al)2[Si5Al3O22](OH,F,O)2 C 2/m 2/m

Other Potassic-magnesiosadanagaite Information

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: