Niksergievite Mineral Data (original) (raw)

General Niksergievite Information

Help on Chemical Formula: Chemical Formula:

[Ba,Ca)2(Al,Si)7O10(CO3)(OH)6•nH2O

Help on Composition: Composition:

Molecular Weight = 722.73 gm

Potassium 0.11 % K 0.13 % K2O

Barium 24.13 % Ba 26.94 % BaO

Calcium 3.60 % Ca 5.04 % CaO

Magnesium 0.24 % Mg 0.39 % MgO

Aluminum 13.03 % Al 24.62 % Al2O3

Iron 0.15 % Fe 0.20 % FeO

Silicon 13.29 % Si 28.43 % SiO2

Hydrogen 0.92 % H 8.23 % H2O

Carbon 1.65 % C 6.03 % CO2

Oxygen 42.88 % O

______ ______

100.00 % 100.01 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Ba1.27Ca0.65K0.02Al3.49Si3.42Mg0.07Fe2+0.02O10(CO3)0.99�0.2(H2O)(OH)6.2

Help on Environment: Environment:

Found in intensively metamorphosed dolomites and limestones enriched in galena, sphalerite and pyrite. Surite series.

Help on IMA Status: IMA Status:

Approved IMA 2002 (Dana # Added)

Help on Locality: Locality:

Tekeli Pb-Zn mine (now abandoned) is located in southeast Kazakhstan, 44° N, 78° E, near the village of Tekeli. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named in honor of Prof. Nikolai Grigorievich Sergiev (1901-1960), a Soviet geologist, for his contributions to the geology of Kazakhstan.

Help on Synonym: Synonym:

IMA2002-036

Niksergievite Image

Click Here for Larger Niksergievite Image in a New Browser Window Images:

Click Here for Larger Niksergievite Image Niksergievite Comments: Pale blue to colorless lamellar fragment of niksergievite. Location: Tekeli mine, Karatau, Kazakhstan.Scale: See Image. © Rruff Database

Niksergievite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =0.5758:1:1.7984

Help on Cell Dimensions: Cell Dimensions:

a = 5.176, b = 8.989, c = 16.166, Z = 2; beta = 96.44° V = 747.41 Den(Calc)= 3.21

Help on Crystal System: Crystal System:

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

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 2.585(1)(130,201,131), 2.23(0.9)(134,220 ), 4.49(0.9)(020 ),2.069(0.8)(043 )1.692(0.6)(311,151,240)3.68(0.6)(014,113 ), 16.1(0.4)(001 ),

Physical Properties of Niksergievite

Help on Cleavage: Cleavage:

{001} Perfect

Help on Color: Color:

Light greenish white.

Help on Density: Density:

3.16

Help on Diaphaneity: Diaphaneity:

Translucent

Help on Fracture: Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Help on Habit: Habit:

Platy - Sheet forms (e.g. micas).

Help on Habit: Habit:

Rosette - Bundled tabular aggregates resembling rose flower petals.

Help on Hardness: Hardness:

1-1.5 - Talc or a little harder

Help on Luster: Luster:

Pearly

Help on Streak: Streak:

white

Optical Properties of Niksergievite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= 0.021 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.037 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.19,KPDmeas= 0.193,KC= 0.1973
Ncalc = 1.62 - 1.63

Help on Optical Data: Optical Data:

Biaxial (-), a=1.58, b=1.625, g=1.625, bire=0.0450

Calculated Properties of Niksergievite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=3.03 gm/cc
note: Specific Gravity of Niksergievite =3.16 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.04
Boson Index = 0.96

Help on Photoelectric: Photoelectric:

PENiksergievite = 102.34 barns/electron
U=PENiksergievite x relectron= 310.19 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 1.51 (Gamma Ray American Petroleum Institute Units)
Concentration of Niksergievite per GRapi unit = 66.34 (%)

Estimated Radioactivity from Niksergievite - barely detectable

Niksergievite Classification

Help on Dana Class: Dana Class:

71.02.04.03 (71)Phyllosilicate Sheets of Six-Membered Rings

(71.02)with 2:1 Layers

(71.02.04)Surite group

71.02.04.01 Ferrisurite (Pb,Cu)2-3(CO3)1.5-2(OH,F)0.5-1[(Fe,Al)2Si4O10(OH)2]•n(H2O) P 21 or P 21/m Mono

71.02.04.02 Surite (Pb,Cu)2-3(CO3)1.5-2(OH,F)0.5-1[(Al,Fe)2(Si,Al)4O10(OH)2]•n(H2O) P 21 ro P 21/m Mono

71.02.04.03 Niksergievite! [Ba,Ca)2(Al,Si)7O10(CO3)(OH)6•nH2O C 2/m, C 2, or Cm Mono

Help on Strunz Class: Strunz Class:

09.EC.75 09 - SILICATES (Germanates)

09.E - Phyllosilicates

09.EC -Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets

09.EC.75 Ferrisurite (Pb,Cu)2-3(CO3)1.5-2(OH,F)0.5-1[(Fe,Al)2Si4O10(OH)2]•n(H2O) P 21 or P 21/m Mono

09.EC.75 Surite (Pb,Cu)2-3(CO3)1.5-2(OH,F)0.5-1[(Al,Fe)2(Si,Al)4O10(OH)2]•n(H2O) P 21 ro P 21/m Mono

09.EC.75 Niksergievite! [Ba,Ca)2(Al,Si)7O10(CO3)(OH)6•nH2O C 2/m, C 2, or Cm Mono

Other Niksergievite Information

Help on References: References:

NAME( AmMin, v90, no7, p1163) PHYS. PROP.(AmMin, v90, no7, p1163) OPTIC PROP.(AmMin, v90, no7, p1163)

Help on See Also: See Also:

Links to other databases for Niksergievite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Print or Cut-and-Paste your Niksergievite Specimen Label here :

Niksergievite

[Ba,Ca)2(Al,Si)7O10(CO3)(OH)6•nH2O
Dana No: 71.02.04.03 Strunz No: 09.EC.75
Locality:

Notes: