Pautovite Mineral Data

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General Pautovite Information

Chemical Formula:

CsFe2S3

Composition:

Molecular Weight = 336.73 gm

Cesium 35.92 % Cs

Potassium 0.23 % K

Rubidium 1.27 % Rb

Thallium 0.61 % Tl

Iron 33.50 % Fe

Sulfur 28.47 % S

______

100.00 %

Empirical Formula:

Cs_0.91Rb_0.05K_0.02Tl_0.01Fe²⁺_2.02S_2.99

Environment:

Hydrothermal assemblage typically as an overgrowth on needle-shaped to hair-like crystals of belovite-(Ce). Cs-dominant analogue of rasvumite and picotpaulite

IMA Status:

Approved IMA 2004 (Dana # Added)

Locality:

Palitra peralkaline pegmatite, Lovozero, Kola Peninsula, Russia. Link to MinDat.org Location Data.

Name Origin:

Name for Leonid Anatol'evich Pautov, a Russian mineralogist affiliated with the Fersman Mineralogical Museum of Russian Academy of Sciences, Moscow.

Synonym:

IMA2004-005

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Pautovite Crystallography

Axial Ratios:

a:b:c =0.8427:1:0.4877

Cell Dimensions:

a = 9.477, b = 11.245, c = 5.485, Z = 4; V = 584.53 Den(Calc)= 3.83

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: C mcm

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

By Intensity(I/I_o): 4.69(0.3)(200 ), 4.28(0.2)(111 ), 2.981(1)(221 ),2.723(0.4)(002 ), 2.629(0.15)(311 ), 2.003(0.3)(312,151,421), 1.91(0.6)(042,060 ), 1.862(0.2)(510,350 ), 1.785(0.3)(402 ),

Crystal Structure:

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Mitchell R H , Ross K C , Potter E G , Journal of Solid State Chemistry , 177 (2004) p.1867-1872, Crystal structures of CsFe2S3 and RbFe2S3: Synthetic analogs of rasvumite KFe2S3, Locality: synthetic

Physical Properties of Pautovite

Cleavage:

{110} Perfect, {110} Perfect

Color:

Dark steel gray.

Diaphaneity:

Opaque

Fracture:

Plastic - Splintery - Thin, soft flexable, elongated fractures produced by intersecting good cleavages or partings (e.g. hornblende).

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).

Hardness:

2.5 - Finger Nail

Luster:

Metallic - Dull

Optical Properties of Pautovite

RL Anisotrophism:

Yes with no internal reflections.

RL Bireflectance:

Strong.

RL Color:

Grayish white to gray.

RL Pleochroism:

Grayish-white to grey with slight pink tint.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Pautovite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
470 nm	13.95	24.60
546 nm	14.65	23.45
589 nm	15.15	24.55
650 nm	16.00	27.05

**Calculated Relative Intensity Colors of Pautovite in Air**
Relative Intensity	0%	70%	100%	140%	210%	280%	350%	420%	490%	560%	630%
R₁
R₂

Calculated Properties of Pautovite

Electron Density:

Bulk Density (Electron Density)=3.49 gm/cc
note: Specific Gravity of Pautovite =3.83 gm/cc.

Fermion Index:

Fermion Index = 0.0092381226
Boson Index = 0.9907618774

Photoelectric:

PE_Pautovite= 173.66 barns/electron
U=PE_Pautovite x r_electron= 606.21 barns/cc.

Radioactivity:

GRapi = 493.81 (Gamma Ray American Petroleum Institute Units)
Concentration of Pautovite per GRapi unit = 0.20 (%)

Estimated Radioactivity from Pautovite - barely detectable

Pautovite Classification

Dana Class:

02.09.11.02 (02)Sulfides - Including Selenides and Tellurides

(02.09)where Am Bn Xp, with (m+n):p=1:1

(02.09.11)Dana Group

02.09.11.01 Rasvumite KFe2S3 C mcm 2/m 2/m 2/m

02.09.11.02 Pautovite! CsFe2S3 C mcm 2/m 2/m 2/m

Strunz Class:

02.FB.20 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.F - Sulfides of Arsenic, Alkalies; Sulfides with Halide, Oxide, Hydroxide, H2O

02.FB -With Alkalies (without Cl, etc.)

02.FB.20 Rasvumite KFe2S3 C mcm 2/m 2/m 2/m

02.FB.20 Pautovite! CsFe2S3 C mcm 2/m 2/m 2/m

Other Pautovite Information

References:

NAME( AmMin, v91, p712) PHYS. PROP.(AmMin, v91, p712) OPTIC PROP.(AmMin, v91, p712)

See Also:

Links to other databases for Pautovite :
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
10 - Ruff.Info

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Pautovite

CsFe2S3
Dana No: 02.09.11.02 Strunz No: 02.FB.20
Locality:

Notes: