Paraguanajuatite Mineral Data (original) (raw)

General Paraguanajuatite Information

Help on Chemical  Formula: Chemical Formula:

Bi2(Se,S)3

Help on Composition: Composition:

Molecular Weight = 691.82 gm

Bismuth 60.41 % Bi

Selenium 25.68 % Se

Sulfur 13.91 % S

______

100.00 %

Help on Empirical Formula: Empirical Formula:

Bi2Se2.25S3

Help on Environment: Environment:

Intergrown with guanajuatite in contact metamorhpic as wall as in hydrothermal veins.

Help on IMA Status: IMA Status:

Valid Species (Pre-IMA) 1948

Help on Locality: Locality:

Santa Catarina mine, Sierra de Santa Rosa, Guanajuato, Mexico. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for the supposed relationship to guanajuatite.

Help on Name Pronunciation: Name Pronunciation:

Paraguanajuatite + Pronunciation Say PARAGUANAJUATITE

Help on Synonym: Synonym:

ICSD 20385

PDF 33-214

Paraguanajuatite Image

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

Paraguanajuatite Crystallography

Help on Axial Ratios: Axial Ratios:

a:c = 1:6.92363

Help on Cell Dimensions: Cell Dimensions:

a = 4.125, c = 28.56, Z = 3; V = 420.86 Den(Calc)= 8.19

Help on Crystal System: Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 3.03(1), 2.23(0.6), 1.404(0.4),

Click Here for Large Paraguanajuatite Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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H - Help Screen
I - Data Info
A - Atoms On/Off
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B - Bonds On/Off
Help on Above

| | Nakajima S , Journal of Physics and Chemistry of Solids , 24 (1963) p.479-485, The crystal structure of Bi2Te3-xSex, Locality: synthetic | | ------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Paraguanajuatite

Help on Cleavage: Cleavage:

{0001} Perfect

Help on Color: Color:

Lead gray, Yellowish white.

Help on Density: Density:

6.6

Help on Diaphaneity: Diaphaneity:

Opaque

Help on Fracture: Fracture:

Flexible - Flexible fragments.

Help on Habit: Habit:

Inclusions - Generally found as inclusions in other minerals.

Help on Hardness: Hardness:

2.5-3 - Finger Nail-Calcite

Help on Luster: Luster:

Metallic

Help on Streak: Streak:

gray

Optical Properties of Paraguanajuatite

Help on RL Anisotrophism: RL Anisotrophism:

Distinct.

Help on RL Pleochroism: RL Pleochroism:

Distinct in air.

Help on Reflectivity Reflectivity

Standardized Intensity (100%) Reflection Spectra of Paraguanajuatite in Air

λ R1 R 2 R1(λ) R2(λ)
400 nm 47.00 51.70
420 nm 48.10 52.60
440 nm 49.20 53.50
460 nm 50.00 54.20
480 nm 50.50 54.60
500 nm 50.90 55.00
520 nm 51.10 55.10
540 nm 51.00 55.00
560 nm 50.80 54.60
580 nm 50.50 54.20
600 nm 50.00 53.70
620 nm 49.50 53.00
640 nm 48.80 52.20
660 nm 48.20 51.50
680 nm 47.40 50.60
700 nm 46.50 49.80

Calculated Relative Intensity Colors of Paraguanajuatite in Air

RelativeIntensity 0% 20% 40% 60% 80% 100% 120% 140% 160% 180%
R1
R2

Calculated Properties of Paraguanajuatite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=6.88 gm/cc
note: Specific Gravity of Paraguanajuatite =8.19 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Help on Photoelectric: Photoelectric:

PEParaguanajuatite =1,180.03 barns/electron
U=PEParaguanajuatite x rElectron Density=8,116.32 barns/cc.

Help on Radioactivity: Radioactivity:

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

Paraguanajuatite Classification

Help on  Dana Class: Dana Class:

02.11.07.04 (02)Sulfides - Including Selenides and Tellurides

(02.11)where Am Bn Xp, with (m+n):p=2:3

(02.11.07)Tetradymite Group (Trigonal: R-3m)

02.11.07.01 Tetradymite Bi2Te2S R 3m 3 2/m

02.11.07.02 Tellurobismuthite Bi2Te3 R 3m 3 2/m

02.11.07.03 Tellurantimony Sb2Te3 R 3m 3 2/m

02.11.07.04 Paraguanajuatite Bi2(Se,S)3 R 3m 3 2/m

02.11.07.05 Kawazulite Bi2(Te,Se,S)3 R 3m 3 2/m

02.11.07.06 Skippenite Bi2Se2(Te,S) R 3m 3 2/m

02.11.07.07 Vihorlatite! Bi24Se17Te4 P 3m1 3 2/m

Help on  Strunz Class: Strunz Class:

02.DC.05c 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.D - Metal Sulfides, M:S = 3:4 and 2:3

02.DC -Variable M:S

02.DC.05c Kawazulite Bi2(Te,Se,S)3 R 3m 3 2/m

02.DC.05c Paraguanajuatite Bi2(Se,S)3 R 3m 3 2/m

02.DC.05c Skippenite Bi2Se2(Te,S) R 3m 3 2/m

02.DC.05c Tetradymite Bi2Te2S R 3m 3 2/m

02.DC.05c Tellurantimony Sb2Te3 R 3m 3 2/m

02.DC.05c Tellurobismuthite Bi2Te3 R 3m 3 2/m

Other Paraguanajuatite Information

Help on References: References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

Help on See Also: See Also:

Links to other databases for Paraguanajuatite :
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
15 - WWW-MINCRYST

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

Paraguanajuatite

Bi2(Se,S)3
Dana No: 02.11.07.04 Strunz No: 02.DC.05c
Locality:

Notes: