Nuffieldite Mineral Data (original) (raw)

General Nuffieldite Information

Help on Chemical Formula: Chemical Formula:

Pb2Cu(Pb,Bi)Bi2S7

Help on Composition: Composition:

Molecular Weight = 1,328.46 gm

Copper 4.78 % Cu

Bismuth 39.33 % Bi

Lead 38.99 % Pb

Sulfur 16.90 % S

______

100.00 %

Help on Empirical Formula: Empirical Formula:

Pb2.5CuBi2.5S7

Help on Environment: Environment:

Found in vugs in a small quartz vein in the Lime Creek stock.

Help on IMA Status: IMA Status:

Approved IMA 1968

Help on Locality: Locality:

Lime Creek stock, Alice Arm, BC, Canada. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for Edward W. Nuffield (1914-), Canadian mineralogist.

Help on Name Pronunciation: Name Pronunciation:

Nuffieldite + Pronunciation Say NUFFIELDITE

Help on Synonym: Synonym:

ICSD 84625

IMA1967-003

PDF 19-675

Search for Nuffieldite Images

Click Here To Search Images:

Nuffieldite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =0.6833:1:0.1884

Help on Cell Dimensions: Cell Dimensions:

a = 14.61, b = 21.38, c = 4.03, Z = 4; V = 1,258.82 Den(Calc)= 7.01

Help on Crystal System: Crystal System:

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

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 3.54(1), 3.66(1), 4(0.9),

Click Here for Large Nuffieldite Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

| | Moelo Y , Meerschaut A , Makovicky E , The Canadian Mineralogist , 35 (1997) p.1497-1508, Refinement of the crystal structure of nuffieldite, Pb2Cu1.4(Pb.4Bi.4Sb.2)Bi2S7:, Structural relationships and genesis of complex lead sulfosalt structures | | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Nuffieldite

Help on Cleavage: Cleavage:

{001} Perfect

Help on Color: Color:

Gray, Steel gray, Grayish green, Reddish brown.

Help on Density: Density:

7.01

Help on Diaphaneity: Diaphaneity:

Opaque

Help on Fracture: Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Help on Habit: Habit:

Acicular - Occurs as needle-like crystals.

Help on Habit: Habit:

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

Help on Hardness: Hardness:

3.5-4 - Copper Penny-Fluorite

Help on Luster: Luster:

Metallic

Help on Streak: Streak:

grayish black

Optical Properties of Nuffieldite

Help on RL Anisotrophism: RL Anisotrophism:

Very weak, from bluish gray to grayish red.

Help on RL Color: RL Color:

Pale creamy white.

Calculated Properties of Nuffieldite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=5.84 gm/cc
note: Specific Gravity of Nuffieldite =7.01 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.08
Boson Index = 0.92

Help on Photoelectric: Photoelectric:

PENuffieldite =1,481.29 barns/electron
U=PENuffieldite x rElectron Density=8,652.83 barns/cc.

Help on Radioactivity: Radioactivity:

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

Nuffieldite Classification

Help on Dana Class: Dana Class:

03.03.04.01 (03)Sulfides - Sulfosalts

(03.03)where 3 < z/y < 4 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.03.04)Dana Group

03.03.04.01 Nuffieldite Pb2Cu(Pb,Bi)Bi2S7 Pbnm 2/m 2/m 2/m

03.03.04.02 Tsugaruite! Pb4As2S7 Pba2 or Pbam Ortho

Help on Strunz Class: Strunz Class:

02.JB.25g 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.J - Sulfosalts of PbS Archetype

02.JB -Galena derivatives, with Pb

02.JB.25g Nuffieldite Pb2Cu(Pb,Bi)Bi2S7 Pbnm 2/m 2/m 2/m

Other Nuffieldite Information

Help on References: References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

Help on See Also: See Also:

Links to other databases for Nuffieldite :
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

Search for Nuffieldite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Nuffieldite :

A Bijoux Google Search for Nuffieldite
Adam's Minerals Google Search for Nuffieldite
Cape Minerals Google Search for Nuffieldite
Dakota Matrix Minerals Google Search for Nuffieldite
Excalibur Mineral Corp. Google Search for Nuffieldite
Exceptional Minerals Google Search for Nuffieldite
John Betts Fine Minerals Search for Nuffieldite
McDougall Minerals Google Search for Nuffieldite
Mineral News Website Link
Rock and Mineral Shows Google Search for Nuffieldite
Weinrich Minerals, Inc. Google Search for Nuffieldite

Ask about Nuffieldite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espa�ol

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

Nuffieldite

Pb2Cu(Pb,Bi)Bi2S7
Dana No: 03.03.04.01 Strunz No: 02.JB.25g
Locality:

Notes: