Kraisslite Mineral Data +

Greenside Minerals

General Kraisslite Information
Chemical Formula:	(Mn++,Mg)24Zn3Fe+++(As+++O3)2(As+++++O4)3(SiO4)6(OH)18
Composition:	Molecular Weight = 3,019.54 gm
	Magnesium   1.53 %  Mg    2.54 % MgO
	Manganese  40.03 %  Mn   51.68 % MnO
	Zinc        6.93 %  Zn    8.63 % ZnO
	Iron        1.29 %  Fe    1.85 % Fe2O3
	Silicon     5.95 %  Si   12.74 % SiO2
	Arsenic    11.66 %  As    6.55 % As2O3 / 10.28 % As2O5
	Hydrogen    0.60 %  H     5.37 % H2O
	Oxygen     32.00 %  O
	______        ______
	100.00 %       99.63 % = TOTAL OXIDE
Empirical Formula:	Mn2+22Mg1.9Zn3.2Fe3+0.7(AsO3)2(AsO4)2.7(SiO4)6.4(OH)18
Environment:	Secondary mineral in the zincite zone of a metamorphosed stratiform zinc deposit.
IMA Status:	Approved IMA 1978
Locality:	Sterling Hill mine, Ogdensburg, Sussex County, New Jersey, USA. Link to MinDat.org Location Data.
Name Origin:	Named for Frederick Kraissl, Jr. (1899-1986) and Alice L. Kraissl (1905-1986), of Hackensack, New Jersey.
Kraisslite Image
Images:	Kraisslite Comments: Yellow crystalline kraisslite in calcite. Location: Sterling Mine, Ogdensburg, Sussex County, New Jersey, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Kraisslite Crystallography
Axial Ratios:	a:c = 1:5.33819
Cell Dimensions:	a = 8.22, c = 43.88, Z = 2; V = 2,567.68 Den(Calc)= 3.91
Crystal System:	Hexagonal - TrapezohedralH-M Symbol (6 2 2) Space Group: P 6322
X Ray Diffraction:	By Intensity(I/Io): 2.74(1), 2.194(0.55), 2.437(0.55),
Physical Properties of Kraisslite
Cleavage:	[0001] Perfect
Color:	Copper brown, Dark copper brown.
Density:	3.876
Diaphaniety:	Translucent
Fracture:	Brittle - Generally displayed by glasses and most non-metallic minerals.
Habit:	Compact - Occurs as a compact mass.
Habit:	Foliated - Two dimensional platy forms.
Habit:	Scaly - Morphology like fish scales.
Hardness:	3-4 - Calcite-Fluorite
Luster:	Sub Metallic
Streak:	golden brown
Optical Properties of Kraisslite
Optical Data:	Uniaxial (+), e=1.805.
Calculated Properties of Kraisslite
Electron Density:	relectron=3.71 gm/cc note: rKraisslite =3.91 gm/cc.
Fermion Index	Fermion Index = 0.00757 Boson Index = 0.99243
Photoelectric:	PEKraisslite = 22.53 barns/electron U=PEKraisslite x relectron= 83.62 barns/cc.
Radioactivity:	GRapi = 0 (Gamma Ray American Petroleum Institute Units) Kraisslite is Not Radioactive
Kraisslite Classification
Dana Class:	43.4.10.1 (43)Compound Phosphates, etc.
	(43.4)(Anhydrous Compound Anions With Hydroxyl or Halogen)
	(43.4.10)Dana Group
	43.4.10.1 Kraisslite (Mn,Mg)24Zn3Fe(AsO3)2(AsO4)3(SiO4)6(OH)18 P 6322 6 2 2
	43.4.10.2 Ekatite! (Fe,Fe,Zn)12(OH)6[AsO3]6[AsO3,HOSiO3]2 P 63mc 6mm
Strunz Class:	VIII/B.11-30 VIII - Silicates
	VIII/B - Nesosubsilicates, with anions unfamiliar to tetraheders, cations of octahedral and tetrahedral orientation [4/6]
	VIII/B.11 - Dixenite - Kraisslite series
	VIII/B.11-10 Dixenite CuMn14Fe(AsO3)5(SiO4)2(AsO4)(OH)6 R 3 3
	VIII/B.11-15 Turtmannite! (Mn,Mg)25.5[(V,As)O4]3(SiO4)3[AsO3]xO5-5x(OH)20x R 3c 3 2/m
	VIII/B.11-20 Mcgovernite Mn9Mg4Zn2As2Si2O17(OH)14 R 3c 3 2/m
	VIII/B.11-30 Kraisslite (Mn,Mg)24Zn3Fe(AsO3)2(AsO4)3(SiO4)6(OH)18 P 6322 6 2 2
	VIII/B.11-40 Asbecasite Ca3(Ti,Sn)As6Si2Be2O20 P 3c 3m
Other Kraisslite Information
References:	NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
See Also:	Links to other databases for Kraisslite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 - Franklin Minerals(Dunn) 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 -École des Mines de Paris Search for Kraisslite using:   Web webmineral.com [ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO] Visit our Advertisers for Kraisslite : 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 Kraisslite Mineral Data : Ask about Kraisslite 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 Kraisslite Specimen Label here : Kraisslite (Mn++,Mg)24Zn3Fe+++(As+++O3)2(As+++++O4)3(SiO4)6(OH)18 Dana No: 43.4.10.1 Strunz No: VIII/B.11-30 Locality:   Notes: