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.

Name Pronunciation:

Jinshajiangite + Pronunciation

Synonym:

IMA1981-061

Surkhobite

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:

Monoclinic Space 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

Gladstone-Dale:

CI meas= 0.024 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.077 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2079,KPDmeas= 0.22,KC= 0.2254
Ncalc = 1.81 - 1.86

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:

Bulk Density (Electron Density)=3.44 gm/cc
note: Specific Gravity of Jinshajiangite =3.61 gm/cc.

Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Photoelectric:

PE_{Jinshajiangite}= 48.03 barns/electron
U=PE_{Jinshajiangite} x r_electron= 165.06 barns/cc.

Radioactivity:

GRapi = 27.29 (Gamma Ray American Petroleum Institute Units)
Concentration of Jinshajiangite per GRapi unit = 3.66 (%)

Estimated Radioactivity from Jinshajiangite - barely detectable

Jinshajiangite Classification

Dana Class:

78.01.05.01 (78)Unclassified silicates

(78.01)possible nesosilicates

(78.01.05)Jinshianghite group

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

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

Strunz Class:

09.BE.67 09 - SILICATES (Germanates)

09.B - Sorosilicates

09.BE -Si2O7 groups with additional anions;

09.BE.67 Jinshajiangite Na2K5BaCa(Fe,Mn)8(Ti,Fe,Nb,Zr)4Si8O32(O,F,H2O)6 C 2/m,Cm,C 2 Mono

09.BE.67 Perraultite (Na,Ca)2(Ba,K)2(Mn,Fe)8(Ti,Nb)4Si8O32(OH,F,O)6 C 2 2

09.BE.67 Surkhobite KBa3Ca2Na2(Mn,Fe,Fe)16Ti8(Si2O7)8O8(OH)4(F,O,OH)8 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 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Jinshajiangite

Na2K5BaCa(Fe,Mn)8(Ti,Fe,Nb,Zr)4Si8O32(O,F,H2O)6
Dana No: 78.01.05.01 Strunz No: 09.BE.67
Locality:

Notes:

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