Atokite Mineral Data +

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General Atokite Information
Chemical Formula:	(Pd,Pt)3Sn
Composition:	Molecular Weight = 504.47 gm
	Tin        23.53 %  Sn
	Palladium  47.47 %  Pd
	Platinum   29.00 %  Pt
	______
	100.00 %
Empirical Formula:	Pd2.25Pt0.75Sn
Environment:	As very sparse grains in concentrates of ore.
IMA Status:	Approved IMA 1975
Locality:	In the Rustenburg and Atok platinum mines, on the Merensky Reef, Bushveld Complex, about 48 km southeast of Pietersburg, Transvaal, South Africa. Link to MinDat.org Location Data.
Name Origin:	For the Atok mine, South Africa.
Synonym:	ICSD 40335
	PDF 29-967
Atokite Image
Images:	Atokite   Taimyrite Comments: Photomicrograph (oil immersion) of atokite and taimyrite intergrowth inside tetraauricupride reaction rim on Pt-Fe alloy. Outlined section shows atokite relics within taimyrite. (CanMin, v 42, p 610). Location: Kondyor PGE placer, Khabarovskiy Kray, eastern Siberia, Russia,. Scale: See Image. © Canadian Mineralogist
Images:	Atokite   Sobolevskite Comments: Back-scattered electron image showing a) intergrowth of atokite, mertieite-II [Pd8Sb3] and telluroan sobolevskite [(Pd,Pt)(Bi,Te)] within tetra-auricupride rim. (CanMin, v 42, p 611). Location: Kondyor PGE placer, Khabarovskiy Kray, eastern Siberia, Russia. Scale: See Image. © Canadian Mineralogist
Atokite Crystallography
Cell Dimensions:	a = 3.991, Z = 1; V = 63.57 Den(Calc)= 13.18
Crystal System:	Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F m3m
X Ray Diffraction:	By Intensity(I/Io): 1.202(1), 2.295(1), 1.408(0.9),
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	Mihalik P , Hiemstra S A , de Villiers J P R , The Canadian Mineralogist , 13 (1975) p.146-150, Rustenburgite and atokite, two new platinum-group minerals from the, Merensky Reef, Bushveld igneous complex, Locality: the Rustenburg and Atok Platinum Mines in the Bushveld Igneous complex, South Africa View Additional jPOWD Structure files for Atokite [1] [2]
Physical Properties of Atokite
Color:	White.
Density:	14.9
Diaphaniety:	Opaque
Hardness:	5 - Apatite
Luster:	Metallic
Optical Properties of Atokite
RL Anisotrophism:	Slight due to strain.
RL Color:	Light cream.
RL Pleochroism:	None to slight.
Calculated Properties of Atokite
Electron Density:	relectron=11.1 gm/cc note: rAtokite =13.2 gm/cc.
Fermion Index	Fermion Index = 0.24312 Boson Index = 0.75688
Photoelectric:	PEAtokite = 642.22 barns/electron U=PEAtokite x relectron=7,114.33 barns/cc.
Radioactivity:	GRapi = 0 (Gamma Ray American Petroleum Institute Units) Atokite is Not Radioactive
Atokite Classification
Dana Class:	1.2.5.3 (1)Native Elements
	(1.2)with platinum group metals and alloys
	(1.2.5)Isoferroplatinum group (Space Group Pm3m)
	1.2.5.1 Isoferroplatinum (Pt,Pd)3(Fe,Cu) P m3m 4/m 3 2/m
	1.2.5.2 Rustenburgite (Pt,Pd)3Sn F m3m 4/m 3 2/m
	1.2.5.3 Atokite (Pd,Pt)3Sn F m3m 4/m 3 2/m
	1.2.5.4 Zvyagintsevite (Pd,Pt,Au)3(Pb,Sn) P m3m 4/m 3 2/m
	1.2.5.5 Chengdeite Ir3Fe P m3m 4/m 3 2/m
	1.2.5.6 Yixunite! Pt3In P m3m 4/m 3 2/m
Strunz Class:	I/A.16-20 I - Elements
	I/A - Metallic and intermetallic compounds, Platinum-Iron-compounds with Tin/Lead and related compunds
	I/A.16 - Zvyagintsevite - Plumbopalladinite series
	I/A.16-10 Zvyagintsevite (Pd,Pt,Au)3(Pb,Sn) P m3m 4/m 3 2/m
	I/A.16-20 Atokite (Pd,Pt)3Sn F m3m 4/m 3 2/m
	I/A.16-30 Rustenburgite (Pt,Pd)3Sn F m3m 4/m 3 2/m
	I/A.16-40 Niggliite PtSn P 63/mmc 6/m 2/m 2/m
	I/A.16-50 Stannopalladinite (Pd,Cu)3Sn2(?) P 63/mmc 6/m 2/m 2/m
	I/A.16-60 Palarstanide Pd8(Sn,As)3 P 6322 6 2 2
	I/A.16-70 Plumbopalladinite Pd3Pb2 P 63/mmc 6/m 2/m 2/m
Other Atokite Information
References:	NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
See Also:	Links to other databases for Atokite : 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 Atokite using:   Web webmineral.com [ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO] Visit our Advertisers for Atokite : AA Mineral Specimens B & L Fine Minerals Dan Weinrich Fine Minerals Dan Weinrich 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 The GeoZone Wrights Rock Shop Translate Atokite Mineral Data : Ask about Atokite 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 Atokite Specimen Label here : Atokite (Pd,Pt)3Sn Dana No: 1.2.5.3 Strunz No: I/A.16-20 Locality:   Notes: