Roxbyite Mineral Data

Roxbyite Mineral Data
Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images       News Help About



[Content and History] [Recent Issues] [Back Issues] [Subscriptions] [Contacts]
See Also: [Diamond Crystals] [Excalibur Minerals] [Hudson Institute] [Minerals on CDROM]
Mineral News was founded some twenty years ago and has developed a following of
avid mineral collectors seeking timely information about new finds and other items
of interest to the collector community. Articles are solicited from collector and scientific authors.


General Roxbyite Information

Help on Chemical Formula: Chemical Formula: Cu1.78S
Help on Composition: Composition: Molecular Weight = 145.18 gm
   Copper  77.91 %  Cu
   Sulfur  22.09 %  S
          ______ 
          100.00 % 
Help on Empirical Formula: Empirical Formula: Cu1.78S
Help on Environment: Environment: Products of corrosion of a 1375 BC bronze harpoon head from a shipwreck.
Help on IMA Status: IMA Status: Approved IMA 1988
Help on Locality: Locality: Roxby Downs, AS, Australia. Eastern Mediterranean Sea. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from the locality.
Help on Name Pronunciation: Name Pronunciation: Roxbyite Say ROXBYITE
 

Roxbyite Image

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

Roxbyite

Comments: Bronzy, metallic, massive roxbyite associated with hematite, co-type sample.
Location: Olympic Dam mine, Roxby Downs, South Australia, Australia. Scale: See Image.
© Rruff Database

Roxbyite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.7407:1:0.4323
Help on Cell Dimensions: Cell Dimensions: a = 53.79, b = 30.9, c = 13.36, Z = 512; beta = 90° V = 22,205.80 Den(Calc)= 5.56
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.933(1), 2.375(0.9), 1.857(0.8),
 

Physical Properties of Roxbyite

Help on Cleavage: Cleavage: {100} Poor
Help on Color: Color: Bluish black.
Help on Density: Density: 5.555
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Powdery - Forms a loose, poorly-coherent pulverulent mass.
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luster: Luster: Metallic - Dull
 

Optical Properties of Roxbyite

Help on RL Anisotrophism: RL Anisotrophism: Very weak.
Help on RL Color: RL Color: White to off-shite with a blue tinge.
 

Calculated Properties of Roxbyite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.18 gm/cc
note: Specific Gravity of Roxbyite =5.56 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.001656554
Boson Index = 0.998343446
Help on Photoelectric: Photoelectric: PERoxbyite = 36.38 barns/electron
U=PERoxbyite x rElectron Density= 188.42 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Roxbyite is Not Radioactive
 

Roxbyite Classification
Help on Dana Class: Dana Class: 02.04.07.04 (02)Sulfides - Including Selenides and Tellurides
  (02.04)where Am Bn Xp, with (m+n):p=2:1
  (02.04.07)Chalcocite Group ([Cu]2-x S] formulae)
 
02.04.07.01 Chalcocite Cu2S P 21/c 2/m
 
02.04.07.02 Djurleite Cu31S16 P 21/n 2/m
 
02.04.07.03 Digenite Cu9S5 R 3m 3 2/m
 
02.04.07.04 Roxbyite Cu1.78S C 2/m 2/m
 
02.04.07.05 Anilite Cu7S4 P nma 2/m 2/m 2/m
 
02.04.07.06 Geerite Cu8S5 R 3m, R 3m, or R 32 Trig
 
02.04.07.07 Spionkopite Cu1.4S P 3m1 ? 3m
Help on Strunz Class: Strunz Class: 02.BA.05d 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.B - Metal Sulfides, M:S > 1:1 (mainly 2:1)
  02.BA -With Cu, Ag, Au
 
02.BA.05d Roxbyite Cu1.78S C 2/m 2/m
 

Other Roxbyite Information
Help on References: References: NAME( CanMin, 10/98) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Roxbyite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info

Search for Roxbyite using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Roxbyite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

Excalibur Minerals

Exceptional Minerals

Fabre Minerals

Heliodor

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Roxbyite Mineral Data :

Ask about Roxbyite 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 Espaņol

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

Roxbyite

Cu1.78S
Dana No: 02.04.07.04 Strunz No: 02.BA.05d
Locality:

 

Notes: