Koechlinite Mineral Data +

Heliodor

General Koechlinite Information
Chemical Formula:	Bi2MoO6
Composition:	Molecular Weight = 609.90 gm
	Bismuth     68.53 %  Bi   76.40 % Bi2O3
	Molybdenum  15.73 %  Mo   23.60 % MoO3
	Oxygen      15.74 %  O
	______        ______
	100.00 %      100.00 % = TOTAL OXIDE
Empirical Formula:	Bi2MoO6
Environment:	In cavities in vein material composed of quartz, bismuth, and smaltite.
IMA Status:	Valid Species (Pre-IMA) 1914
Locality:	Daniel mine, Schneeberg, Sazony, Germany. Link to MinDat.org Location Data.
Name Origin:	Named for Rudolf Koechlin (1862-1939), Austrian mineralogist.
Synonym:	ICSD 17070
	PDF 21-102
Koechlinite Image
Images:	Koechlinite Comments: Greenish yellow crystal of koechlinite on quartz. Location: Adam Heber Mine, Neust?dtel, Schneeberg district, Erzgebirge, Saxony, Germany. Scale: Picture size 1 mm. © Thomas Witzke / Abraxas-Verlag
Koechlinite Crystallography
Axial Ratios:	a:b:c =0.3393:1:0.3381
Cell Dimensions:	a = 5.502, b = 16.213, c = 5.483, Z = 4; V = 489.11 Den(Calc)= 8.28
Crystal System:	Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: C mca
X Ray Diffraction:	By Intensity(I/Io): 3.15(1), 1.652(0.2), 2.741(0.18),
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Physical Properties of Koechlinite
Cleavage:	[010] Perfect
Color:	Greenish yellow, Yellow, White.
Density:	8.26
Diaphaniety:	Transparent
Fracture:	Brittle - Generally displayed by glasses and most non-metallic minerals.
Luster:	Vitreous (Glassy)
Streak:	yellow white
Optical Properties of Koechlinite
Gladstone-Dale:	CI meas= -0.121 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.118 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1932,KPDmeas= 0.1937,KC= 0.1728
Optical Data:	Biaxial (-), a=2.52, b=2.61, g=2.67, bire=0.1500, 2V(Calc)=76, 2V(Meas)=large. Dispersion r < v strong.
Calculated Properties of Koechlinite
Electron Density:	relectron=6.95 gm/cc note: rKoechlinite =8.28 gm/cc.
Fermion Index	Fermion Index = 0.04014 Boson Index = 0.95986
Photoelectric:	PEKoechlinite =1,342.38 barns/electron U=PEKoechlinite x relectron=9,330.81 barns/cc.
Radioactivity:	GRapi = 0 (Gamma Ray American Petroleum Institute Units) Koechlinite is Not Radioactive
Koechlinite Classification
Dana Class:	48.2.2.1 (48)Anhydrous Molybdates and Tungstates
	(48.2)where (A)2 XO4
	(48.2.2)Dana Group
	48.2.2.1 Koechlinite Bi2MoO6 C mca 2/m 2/m 2/m
Strunz Class:	VI/G.01-60 VI - Sulfates,Chromates,Molybdates and Tungstates
	VI/G - Molybdates [MoO4]2- and wolframates [WO4]2-
	VI/G.01 - Scheelite - Wulfenite series, (Powellite - Raspite)
	VI/G.01-10 Powellite CaMoO4 I 41/a 4/m
	VI/G.01-20 Scheelite CaWO4 I 41/a 4/m
	VI/G.01-25 Paraniite-(Y) Ca2Y(AsO4)(WO4)2 I 41/a 4/m
	VI/G.01-30 Wulfenite PbMoO4 I 41/a 4/m
	VI/G.01-40 Stolzite PbWO4 I 41/a 4/m
	VI/G.01-50 Raspite PbWO4 P 2/n 2/m
	VI/G.01-60 Koechlinite Bi2MoO6 C mca 2/m 2/m 2/m
	VI/G.01-70 Russellite Bi2WO6 P ca21 mm2
Other Koechlinite Information
References:	NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
See Also:	Links to other databases for Koechlinite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris Search for Koechlinite using:   Web webmineral.com [ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO] Visit our Advertisers for Koechlinite : AA Mineral Specimens B & L Fine Minerals Crystal Vaults 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 Koechlinite Mineral Data : Ask about Koechlinite 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 Koechlinite Specimen Label here : Koechlinite Bi2MoO6 Dana No: 48.2.2.1 Strunz No: VI/G.01-60 Locality:   Notes: