Ogdensburgite Mineral Data +

Fabre Minerals

General Ogdensburgite Information
Chemical Formula:	Ca2(Zn,Mn)Fe+++4(AsO4)4(OH)6·6(H2O)
Composition:	Molecular Weight = 1,132.66 gm
	Calcium     7.08 %  Ca    9.90 % CaO
	Manganese   0.97 %  Mn    1.25 % MnO
	Zinc        4.62 %  Zn    5.75 % ZnO
	Iron       19.72 %  Fe   28.20 % Fe2O3
	Arsenic    26.46 %  As   40.58 % As2O5
	Hydrogen    1.60 %  H    14.31 % H2O
	Oxygen     39.55 %  O
	______        ______
	100.00 %      100.00 % = TOTAL OXIDE
Empirical Formula:	Ca2Zn0.8Mn2+0.2Fe3+4(AsO4)4(OH)6·6(H2O)
Environment:	Secondary Fe arsenate.
IMA Status:	Approved IMA 1981
Locality:	Sterling Hill mine, Ogdensburg, New Jersy, USA. Link to MinDat.org Location Data.
Name Origin:	Named for the locality.
Ogdensburgite Image
Images:	Ogdensburgite Comments: Reddish-brown, massive ogdensburgite. Location: Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA. Scale: Picture size 6 mm. © Thomas Witzke / Abraxas-Verlag
Ogdensburgite Crystallography
Axial Ratios:	a:b:c =0.765:1:0.4418
Cell Dimensions:	a = 11.351, b = 14.837, c = 6.555, Z = 2; V = 1,103.96 Den(Calc)= 3.41
Crystal System:	Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Bmmm
X Ray Diffraction:	By Intensity(I/Io): 14.8(1), 2.656(0.3), 4.52(0.3),
Physical Properties of Ogdensburgite
Cleavage:	[001] Perfect, [010] Fair, [100] Poor
Color:	Brownish red, Dark brown, Reddish orange.
Density:	2.92 - 3.11, Average = 3.01
Diaphaniety:	Translucent
Habit:	Bladed - Aggregates of thin lath-like crystals (e.g. kyanite).
Habit:	Encrustations - Forms crust-like aggregates on matrix.
Habit:	Micaceous - Platy texture with "flexible" plates.
Hardness:	2 - Gypsum
Luminescence:	Non-fluorescent.
Luster:	Resinous
Streak:	brown yellow
Optical Properties of Ogdensburgite
Gladstone-Dale:	CI meas= -0.071 (Fair) - where the CI = (1-KPDmeas/KC) CI calc= 0.053 (Good) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2232,KPDmeas= 0.2524,KC= 0.2356
Optical Data:	Biaxial (-), a=1.715, b=1.783, g=1.785, bire=0.0700, 2V(Calc)=18, 2V(Meas)=5-10.
Pleochroism (x):	yellow.
Pleochroism (y):	reddish brown.
Pleochroism (z):	reddish brown.
Calculated Properties of Ogdensburgite
Electron Density:	relectron=3.29 gm/cc note: rOgdensburgite =3.41 gm/cc.
Fermion Index	Fermion Index = 0.00636 Boson Index = 0.99364
Photoelectric:	PEOgdensburgite = 27.16 barns/electron U=PEOgdensburgite x relectron= 89.45 barns/cc.
Radioactivity:	GRapi = 0 (Gamma Ray American Petroleum Institute Units) Ogdensburgite is Not Radioactive
Ogdensburgite Classification
Dana Class:	42.9.7.1 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
	(42.9)where (A)3 (XO4)2 Zq · x(H2O)
	(42.9.7)Dana Group
	42.9.7.1 Ogdensburgite Ca2(Zn,Mn)Fe4(AsO4)4(OH)6·6(H2O) Bmmm 2/m 2/m 2/m
Strunz Class:	VII/D.49-10 VII - Phosphates, Arsenates and Vanadates
	VII/D - Water-bearing phosphates with unfamiliar anions, cations of very big and medium size: Al, Mg and Ca, Na, K
	VII/D.49 - Ogdensburgite
	VII/D.49-10 Ogdensburgite Ca2(Zn,Mn)Fe4(AsO4)4(OH)6·6(H2O) Bmmm 2/m 2/m 2/m
Other Ogdensburgite Information
References:	NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
See Also:	Links to other databases for Ogdensburgite : 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 (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 -École des Mines de Paris Search for Ogdensburgite using:   Web webmineral.com [ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO] Visit our Advertisers for Ogdensburgite : 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 Ogdensburgite Mineral Data : Ask about Ogdensburgite 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 Ogdensburgite Specimen Label here : Ogdensburgite Ca2(Zn,Mn)Fe+++4(AsO4)4(OH)6·6(H2O) Dana No: 42.9.7.1 Strunz No: VII/D.49-10 Locality:   Notes: