Playfairite Mineral Data (original) (raw)

General Playfairite Information

Help on Chemical Formula: Chemical Formula:

Pb16Sb18S43

Help on Composition: Composition:

Molecular Weight = 6,885.54 gm

Antimony 31.83 % Sb

Lead 48.15 % Pb

Sulfur 20.03 % S

______

100.00 %

Help on Empirical Formula: Empirical Formula:

Pb16Sb18S43

Help on Environment: Environment:

As masses and stringer through dolomitic and calcitic marbles. Found at the edges of other sulfosalt minerals.

Help on IMA Status: IMA Status:

Approved IMA 1967

Help on Locality: Locality:

Taylor pit, near Madoc, Huntingdon Township, Hastings County, Ontario, Canada Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for John Playfair (1748-1819), Professor of Natural Philosophy, Edinburgh, Scotland.

Help on Name Pronunciation: Name Pronunciation:

Playfairite + Pronunciation Say PLAYFAIRITE

Help on Synonym: Synonym:

IMA1966-019

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Playfairite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =10.9011:1:5.1824

Help on Cell Dimensions: Cell Dimensions:

a = 45.12, b = 4.139, c = 21.45, Z = 2; beta = 92.53° V = 4,001.92 Den(Calc)= 5.71

Help on Crystal System: Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/m

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 3.32(1), 3.39(1), 2.785(0.7),

Physical Properties of Playfairite

Help on Cleavage: Cleavage:

{100} Perfect

Help on Color: Color:

Lead gray, Black.

Help on Density: Density:

5.8

Help on Diaphaneity: Diaphaneity:

Opaque

Help on Habit: Habit:

Striated - Parallel lines on crystal surface or cleavage face.

Help on Habit: Habit:

Tabular - Form dimensions are thin in one direction.

Help on Hardness: Hardness:

3.5-4 - Copper Penny-Fluorite

Help on Luster: Luster:

Metallic

Help on Streak: Streak:

black

Optical Properties of Playfairite

Help on RL Pleochroism: RL Pleochroism:

Strong, white to brownish gray.

Calculated Properties of Playfairite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=4.84 gm/cc
note: Specific Gravity of Playfairite =5.71 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.1
Boson Index = 0.9

Help on Photoelectric: Photoelectric:

PEPlayfairite = 983.67 barns/electron
U=PEPlayfairite x rElectron Density=4,760.63 barns/cc.

Help on Radioactivity: Radioactivity:

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

Playfairite Classification

Help on Dana Class: Dana Class:

03.06.04.01 (03)Sulfides - Sulfosalts

(03.06)where 2 < z/y < 2.49 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.06.04)Dana Group

03.06.04.01 Playfairite Pb16Sb18S43 P 21/m 2/m

Help on Strunz Class: Strunz Class:

02.LB.55 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.L - Unclassified Sulfosalts

02.LB -With essential Pb

02.LB.55 Playfairite Pb16Sb18S43 P 21/m 2/m

Other Playfairite 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 Playfairite :
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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Print or Cut-and-Paste your Playfairite Specimen Label here :

Playfairite

Pb16Sb18S43
Dana No: 03.06.04.01 Strunz No: 02.LB.55
Locality:

Notes: