Yimengite Mineral Data Pronunciation Guide

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General Information
Chemical Formula:	K(Cr,Ti,Fe,Mg)12O19
IMA Status:	Approved IMA
Classification
Dana Class:	7.4.1.2 (7)Multiple Oxides
	(7.4)with O19 groups
	(7.4.1)(Hexagonal, P63/mmc)
Strunz Class:	IV/C.08-10 IV - Oxides
	IV/C - Oxides with metal : oxygen = 2:3 (M2O3 and related compounds)
	IV/C.08 - Yimngite - Otjisumeite series
Crystallography
Axial Ratios:	a:c = 1:3.90468
Cell Dimensions:	a = 5.875, c = 22.94, Z = 2; V = 685.71
Crystal System:	Hexagonal - Dihexagonal Dipyramidal H-M Symbol (6/m 2/m 2/m) Space Group: P63/mmc
X Ray Diffraction:	By Intensity(I/Io): 2.63(1) 1.622(0.9) 2.78(0.9)
Physical Properties
Cleavage:	[0001] Perfect
Color:	black.
Density:	4.34
Diaphaniety:	Opaque
Hardness:	4 - Fluorite
Luster:	Metallic
Streak:	brown
Other Information
References:	PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
See Also:	Links to other data for Yimengite :   1 -Athena Mineralogy   2 - EUROmin Project   3 -MinDat.org Location Data   4 -MinMax   5 -École des Mines de Paris Search for Yimengite using: [ALTAVISTA] [All-The-Web] [EXCITE] [GO.COM] [GOOGLE] [LYCOS] [LookSmart] [MAMMA] [MSN.COM] [NORTHERN LIGHT] [YAHOO] Visit our Advertisers for Yimengite : The Arkenstone Fine Minerals John Betts Fine Minerals Dakota Matrix Minerals Exceptional Minerals Fabre Minerals JCrystal Software OsoSoft Minerals Rare Minerals Tsumeb Minerals Dan Weinrich Fine Minerals

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