Jinshajiangite Mineral Data

Jinshajiangite Mineral Data +

General Jinshajiangite Information

Chemical Formula:

Na2K5BaCa(Fe,Mn)8(Ti,Fe,Nb,Zr)4Si8O32(O,F,H2O)6

Composition:

Molecular Weight = 1,770.72 gm

Potassium 1.99 % K 2.39 % K₂O

Barium 8.53 % Ba 9.52 % BaO

Sodium 2.34 % Na 3.15 % Na₂O

Calcium 2.26 % Ca 3.17 % CaO

Zirconium 0.52 % Zr 0.70 % ZrO₂

Titanium 9.73 % Ti 16.24 % TiO₂

Manganese 10.24 % Mn 13.22 % MnO

Niobium 0.79 % Nb 1.13 % Nb₂O₅

Iron 16.08 % Fe 19.07 % FeO / 1.80 % Fe₂O₃

Silicon 12.69 % Si 27.15 % SiO₂

Hydrogen 0.07 % H 0.66 % H₂O

Oxygen 32.08 % O

Fluorine 2.68 % F 2.68 % F

- % F -1.13 % -O=F₂

______ ______

100.00 % 99.75 % = TOTAL OXIDE

Empirical Formula:

Na_1.8K_0.9Ba_1.1CaFe²⁺_4.7Mn²⁺_3.3Ti_3.6Fe³⁺_0.4Nb_0.15Zr_0.1Si₈O₃₂O_2.8F_2.5 (H₂O)_0.6(OH)_0.1

Environment:

Occurs in an albite-arfvedsontie dike in alkalic syenites.

IMA Status:

Approved IMA 1982

Locality:

Jinshajiang River, Sichuan Province, China. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Jinshajiangite Image

Images:

Jinshajiangite

Comments: Reddish elongated junshajiangite grain to 0.3mm in matrix.
Location: Norra Karr, Sweden. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Jinshajiangite Crystallography

Axial Ratios:

a:b:c =0.775:1:1.5033

Cell Dimensions:

a = 10.732, b = 13.847, c = 20.817, Z = 4; beta = 95.05° V = 3,081.52 Den(Calc)= 3.82

Crystal System:

MonoclinicSpace Group: C 2/m,Cm,C 2

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

By Intensity(I/I_o): 3.44(1), 2.57(0.8), 3.15(0.8),

Physical Properties of Jinshajiangite

Cleavage:

[010] Perfect, [100] Perfect

Color:

Brown red, Yellow red, Black, Black red.

Density:

3.61

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

Tabular - Form dimensions are thin in one direction.

Habit:

Thin - Flat dimensioned crystals.

Hardness:

4.5-5 - Near Apatite

Luster:

Vitreous (Glassy)

Streak:

light yellow

Optical Properties of Jinshajiangite

Optical Data:

Biaxial (+), a=1.729, b=1.802, g=1.852, bire=0.1230, 2V(Calc)=76, 2V(Meas)=72. Dispersion r < v.

Pleochroism (x):

light golden yellow.

Pleochroism (y):

brownish yellow.

Pleochroism (z):

brownish red.

Calculated Properties of Jinshajiangite

Electron Density:

r_electron=3.64 gm/cc
note: r_{Jinshajiangite}=3.82 gm/cc.

Fermion Index

Fermion Index = 0.03789
Boson Index = 0.96211

Photoelectric:

PE_{Jinshajiangite}= 48.03 barns/electron
U=PE_{Jinshajiangite} x r_electron= 174.66 barns/cc.

Radioactivity:

GRapi = 27.29 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Jinshajiangite - barely detectable

Jinshajiangite Classification

Dana Class:

78.1.5.1 (78)Unclassified silicates

(78.1)possible nesosilicates

(78.1.5)Jinshianghite group

78.1.5.1 Jinshajiangite Na2K5BaCa(Fe,Mn)8(Ti,Fe,Nb,Zr)4Si8O32(O,F,H2O)6 C 2/m,Cm,C 2 Mono

78.1.5.2 Perraultite (Na,Ca)2(Ba,K)2(Mn,Fe)8(Ti,Nb)4Si8O32(OH,F,O)6 C 2 2

Strunz Class:

VIII/D.03-10 VIII - Silicates

VIII/D - Unclassified silicates, mostly cations of small size Mg, Fe, Mn, Cu

VIII/D.03 - Jinshajiangite - Perraultite series

VIII/D.03-10 Jinshajiangite Na2K5BaCa(Fe,Mn)8(Ti,Fe,Nb,Zr)4Si8O32(O,F,H2O)6 C 2/m,Cm,C 2 Mono

VIII/D.03-20 Perraultite (Na,Ca)2(Ba,K)2(Mn,Fe)8(Ti,Nb)4Si8O32(OH,F,O)6 C 2 2

Other Jinshajiangite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Jinshajiangite :
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 -École des Mines de Paris

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Jinshajiangite

Na2K5BaCa(Fe,Mn)8(Ti,Fe,Nb,Zr)4Si8O32(O,F,H2O)6
Dana No: 78.1.5.1 Strunz No: VIII/D.03-10
Locality:

Notes: