Vasilyevite Mineral Data

General Vasilyevite Information

Chemical Formula:

(Hg2)++10O6I3Cl(CO3)

Composition:

Molecular Weight = 4,836.00 gm

Mercury 86.36 % Hg 89.80 % Hg₂O

Carbon 0.22 % C 0.81 % CO₂

Sulfur 0.10 % S 0.10 % S^2-

- % S -0.05 % -O=S

Iodine 7.06 % I 7.06 % I

- % I -0.44 % -O=I₂

Bromine 2.51 % Br 2.51 % Br

- % Br -0.25 % -O=Br₂

Chlorine 0.60 % Cl 0.60 % Cl

- % Cl -0.14 % -O=Cl₂

Oxygen 3.15 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Hg_20.82O_6.85I_2.69Br_1.52Cl_0.82(CO₃)_0.89S_0.15

Environment:

Occurs in milligram grains in quartz-lined vugs in small quartz veins cutting brecciated silicate-carbonate rock.

IMA Status:

Approved IMA 2003 (Dana # Added)

Locality:

Clear Creek claim, San Benitio County, California, USA. Link to MinDat.org Location Data.

Name Origin:

Named for Vladimir Ivanovich Vasilyev (1929-), Institute of of Geology of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia.

Synonym:

IMA2003-016

Vasilyevite Crystallography

Axial Ratios:

a:b:c =0.8771:1:1.7145

Cell Dimensions:

a = 9.344, b = 10.653, c = 18.265, Z = 2; alpha = 93.262°, beta = 90.548°, gamma = 115.422° V = 1,639.34 Den(Calc)= 9.80

Crystal System:

Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1

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

By Intensity(I/I_o): 2.894(1)(312,322), 3.132(0.9)(123,113), 2.722(0.8)(124), 4.205(0.8)(014), 7.645(0.6)(111), 2.629(0.5)(130,140),

Physical Properties of Vasilyevite

Cleavage:

None

Color:

Silvery gray, Black, Dark reddish black.

Diaphaneity:

Translucent to opaque

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

3 - Calcite

Luster:

Subadamantine

Streak:

red brown

Optical Properties of Vasilyevite

Optical Data:

NCalc= 2.51 - from Gladstone-Dale relationship (KC = 0.1544) where Ncalc=Dcalc*KC+1

RL Anisotrophism:

Moderate to strong.

RL Bireflectance:

None.

RL Color:

Gray with abundant orange-red to blood red internal reflections.

RL Pleochroism:

None.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Vasilyevite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	30.20	30.80
420 nm	29.90	30.60
440 nm	29.50	30.40
460 nm	28.90	29.80
470 nm	28.60	29.50
480 nm	28.20	29.20
500 nm	27.60	28.70
520 nm	27.00	27.80
540 nm	26.40	27.30
546 nm	26.20	27.10
560 nm	25.70	26.60
580 nm	24.90	25.90
589 nm	24.60	25.70
600 nm	24.30	25.30
620 nm	23.60	24.80
640 nm	23.00	24.10
650 nm	22.80	24.00
660 nm	22.60	23.60
680 nm	22.20	23.10
700 nm	21.90	22.90

**Standardized Intensity (100%) Reflection Spectra of Vasilyevite in Oil**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	14.60	15.30
420 nm	14.00	14.80
440 nm	13.50	14.40
460 nm	13.20	14.10
470 nm	13.00	13.90
480 nm	12.70	13.60
500 nm	12.30	13.10
520 nm	11.80	12.50
540 nm	11.30	12.10
546 nm	11.10	11.80
560 nm	10.70	11.50
580 nm	10.40	11.10
589 nm	10.20	10.90
600 nm	10.00	10.70
620 nm	9.70	10.40
640 nm	9.20	10.00
650 nm	9.10	9.80
660 nm	9.00	9.60
680 nm	8.70	9.30
700 nm	8.60	9.20

**Calculated Relative Intensity Colors of Vasilyevite in Air**
Relative Intensity	0%	40%	80%	100%	120%	160%	200%	240%	280%	320%	360%
R₁
R₂

**Calculated Relative Intensity Colors of Vasilyevite in Oil**
Relative Intensity	0%	90%	100%	180%	270%	360%	450%	540%	630%	720%	810%	870%
R₁
R₂

Calculated Properties of Vasilyevite

Electron Density:

Bulk Density (Electron Density)=7.94 gm/cc
note: Specific Gravity of Vasilyevite =9.80 gm/cc.

Fermion Index:

Fermion Index = 0.26
Boson Index = 0.74

Photoelectric:

PE_Vasilyevite=1,540.39 barns/electron
U=PE_Vasilyevite x rElectron Density=12231.53 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Vasilyevite is Not Radioactive

Vasilyevite Classification

Dana Class:

10.05.15.01 (10)Oxyhalides and Hydroxyhalides

(10.05)where Am (O,OH)p Xq

(10.05.15)Dana Group

10.05.15.01 Vasilyevite! (Hg2)10O6I3Cl(CO3) P1 1

Strunz Class:

03.DD.45 03 - HALIDES

03.D - Oxyhalides, Hydroxyhalides and Related Double Halides

03.DD -With Hg

03.DD.45 Vasilyevite! (Hg2)10O6I3Cl(CO3) P1 1

Other Vasilyevite Information

References:

NAME( CanMin, v 41, p 1167) PHYS. PROP.(CanMin, v 41, p 1167) OPTIC PROP.(CanMin, v 41, p 1167)

See Also:

Links to other databases for Vasilyevite :
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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Vasilyevite

(Hg2)++10O6I3Cl(CO3)
Dana No: 10.05.15.01 Strunz No: 03.DD.45
Locality:

Notes:

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