Skinnerite Mineral Data +

John Betts Fine Minerals

General Skinnerite Information
Chemical Formula:	Cu3SbS3
Composition:	Molecular Weight = 408.59 gm
	Copper    46.66 %  Cu
	Antimony  29.80 %  Sb
	Sulfur    23.54 %  S
	______
	100.00 %
Empirical Formula:	Cu3SbS3
Environment:	Found in a complex of analcime-natrolite veins cutting naujaites.
IMA Status:	Approved IMA 1974
Locality:	Ilímaussaq intrusive, Kvanefeld, southern Greenland. Link to MinDat.org Location Data.
Name Origin:	Named for Brian J. Skinnner, Yale University, New Haven, Connecticut, USA.
Synonym:	ICSD 74901
	PDF 26-1110
Skinnerite Image
Images:	Skinnerite Comments: Dark gray skinnerite on matrix. Location: Bankove, Kosice, Vychodoslovensky, Slovakia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Skinnerite Crystallography
Axial Ratios:	a:b:c =0.7619:1:1.2946
Cell Dimensions:	a = 7.81, b = 10.25, c = 13.27, Z = 8; beta = 90.35° V = 1,062.28 Den(Calc)= 5.11
Crystal System:	Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c
X Ray Diffraction:	By Intensity(I/Io): 2.831(1), 3.048(0.7), 3.91(0.6),
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	Makovicky E , Balic-Zunic T , The Canadian Mineralogist , 33 (1995) p.655-663
Physical Properties of Skinnerite
Color:	Silver gray.
Density:	5.07
Diaphaniety:	Opaque
Habit:	Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks.
Hardness:	3.5-4 - Copper Penny-Fluorite
Luster:	Metallic
Streak:	reddish black
Optical Properties of Skinnerite
RL Anisotrophism:	Distinct in air, strong in oil, from pale purple to grayish yellow.
RL Color:	Light bluish gray with deep red interanl reflections.
RL Pleochroism:	Weak in air, weak to distinct in oil.
Calculated Properties of Skinnerite
Electron Density:	relectron=4.65 gm/cc note: rSkinnerite =5.11 gm/cc.
Fermion Index	Fermion Index = 0.00176 Boson Index = 0.99824
Photoelectric:	PESkinnerite = 119.12 barns/electron U=PESkinnerite x relectron= 554.19 barns/cc.
Radioactivity:	GRapi = 0 (Gamma Ray American Petroleum Institute Units) Skinnerite is Not Radioactive
Skinnerite Classification
Dana Class:	3.4.8.2 (3)Sulfides - Sulfosalts
	(3.4)where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals
	(3.4.8)Dana Group
	3.4.8.1 Wittichenite Cu3BiS3 P 212121 2 2 2
	3.4.8.2 Skinnerite Cu3SbS3 P 21/c 2/m
	3.4.8.3 Moeloite! Pb6Sb6S14(S3) P 21221 2 2 2
Strunz Class:	II/E.03-10 II - Sulfides and sulphosalts
	II/E - Sulfosalts (S : As,Sb,Bi = x), Sulfosalts with predominant Iron and Copper x = 2.0
	II/E.03 - Skinnerite - Wittichenite series
	II/E.03-10 Skinnerite Cu3SbS3 P 21/c 2/m
	II/E.03-20 Wittichenite Cu3BiS3 P 212121 2 2 2
Other Skinnerite Information
References:	NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
See Also:	Links to other databases for Skinnerite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris Search for Skinnerite using:   Web webmineral.com [ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO] Visit our Advertisers for Skinnerite : AA Mineral Specimens B & L Fine Minerals Dan Weinrich Fine Minerals Dan Weinrich Auctions e-Rocks Auctions Excalibur Minerals Exceptional Minerals Fabre Minerals Greenside Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club MineralsWeb Fine Minerals Rockshop.cz T G Fine Minerals Wrights Rock Shop Translate Skinnerite Mineral Data : Ask about Skinnerite 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 Español Print or Cut-and-Paste your Skinnerite Specimen Label here : Skinnerite Cu3SbS3 Dana No: 3.4.8.2 Strunz No: II/E.03-10 Locality:   Notes: