Ferrilotharmeyerite Mineral Data

John Betts Fine Minerals

General Ferrilotharmeyerite Information
Chemical Formula:	Ca(Zn,Cu++)(Fe+++,Zn)(AsO4)2(OH,H2O)2
Composition:	Molecular Weight = 490.79 gm
	Calcium    7.35 %  Ca   10.28 % CaO
	Zinc      10.66 %  Zn   13.27 % ZnO
	Iron      10.24 %  Fe   14.64 % Fe2O3
	Copper     3.88 %  Cu    4.37 % Cu2O
	Arsenic   30.53 %  As   46.83 % As2O5
	Hydrogen   0.51 %  H     4.59 % H2O
	Lead       4.22 %  Pb    4.55 % PbO
	Oxygen    32.60 %  O
	______        ______
	100.00 %       98.53 % = TOTAL OXIDE
Empirical Formula:	Ca0.9Pb0.1Fe3+0.9Zn0.8Cu0.3(AsO4)2(OH)1.5(H2O)0.5
Environment:	On museum specimens from a dolostone-hosted hydrothermal polymetallic ore deposit.
IMA Status:	Approved IMA 1992
Locality:	Tsumeb, Namibia. Link to MinDat.org Location Data.
Name Origin:	As the ferric iron analog of lotharmeyerite
Synonym:	ICSD 76614
	IMA1986-024
	PDF 45-1390
Ferrilotharmeyerite Image
Images:	Ferrilotharmeyerite Comments: Brown crystalline aggregates of ferrilotharmeyerite on quartz. Location: Pucher Shaft, Schneeberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 6 mm. © Thomas Witzke / Abraxas-Verlag
Ferrilotharmeyerite Crystallography
Axial Ratios:	a:b:c =1.4437:1:1.1841
Cell Dimensions:	a = 9.006, b = 6.238, c = 7.387, Z = 2; beta = 115.54° V = 374.45 Den(Calc)= 4.35
Crystal System:	Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m
X Ray Diffraction:	By Intensity(I/Io): 2.938(1), 3.175(1), 3.398(1),
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	Krause W , Belendorff K , Bernhardt H J , McCammon C A , Effenberger H , Mikenda W , European Journal of Mineralogy , 10 (1998) p.179-206, Crystal chemistry of the tsumcorite-group minerals. New data on ferrilotharmeyerite,, tsumcorite, thometzekite, mounanaite, helmutwinklerite, and a redefinition of gartrellite
Physical Properties of Ferrilotharmeyerite
Cleavage:	[001] Good
Color:	Brownish yellow, Yellow brown.
Density:	4.25
Diaphaniety:	Transparent to Translucent
Fracture:	Brittle - Uneven - Very brittle fracture producing uneven fragments.
Habit:	Subhedral Crystals - Occurs as crystals which tend to exhibit a recognizable crystal shape.
Habit:	Tabular - Form dimensions are thin in one direction.
Habit:	Wedge shaped - Crystals shaped like a wedge.
Hardness:	3 - Calcite
Luster:	Adamantine - Greasy
Streak:	light yellow
Optical Properties of Ferrilotharmeyerite
Gladstone-Dale:	CI meas= -0.012 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.011 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1943,KPDmeas= 0.1988,KC= 0.1964
Optical Data:	Biaxial (+), a=1.83, b=1.835, g=1.87, bire=0.0400, 2V(Calc)=44, 2V(Meas)=40. Dispersion r > v distinct.
Pleochroism (x):	olive green or orange.
Pleochroism (y):	pale green or yellow.
Pleochroism (z):	colorless or colorless.
Calculated Properties of Ferrilotharmeyerite
Electron Density:	relectron=4.09 gm/cc note: rFerrilotharmeyerite =4.35 gm/cc.
Fermion Index	Fermion Index = 0.01612 Boson Index = 0.98388
Photoelectric:	PEFerrilotharmeyerite = 101.22 barns/electron U=PEFerrilotharmeyerite x relectron= 414.12 barns/cc.
Radioactivity:	GRapi = 0 (Gamma Ray American Petroleum Institute Units) Ferrilotharmeyerite is Not Radioactive
Ferrilotharmeyerite Classification
Dana Class:	37.1.6.2 (37)Anhydrous Acid Phosphates, etc
	(37.1)with miscellaneous formulae
	(37.1.6)Dana Group
	37.1.6.1 Lotharmeyerite CaZnMn(AsO3OH)4(OH)3 C 2/m,C 2,Cm Mono
	37.1.6.2 Ferrilotharmeyerite Ca(Zn,Cu)(Fe,Zn)(AsO4)2(OH,H2O)2 C 2/m 2/m
	37.1.6.3 Cobaltlotharmeyerite! Ca(Co,Fe,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m
	37.1.6.4 Nickellotharmeyerite! Ca(Ni,Fe,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m
Strunz Class:	VII/C.31-10 VII - Phosphates, Arsenates and Vanadates
	VII/C - Water-bearing phosphates without unfamiliar anions, cations of medium and big size: Fe, Mn, Zn, Mg and Ca, (NH4)1+
	VII/C.31 - Mawbyite - Gartrellite series
	VII/C.31-02 Schneebergite! Bi(Co,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m
	VII/C.31-04 Nickelschneebergite! Bi(Ni,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m
	VII/C.31-05 Mawbyite Pb(FeZn)2(AsO4)2(OH,H2O)2 C 2/m 2/m
	VII/C.31-06 Cabalzarite! Ca(Mg,Al,Fe)2(AsO4)2(H2O,OH)2 C 2/m 2/m
	VII/C.31-08 Nickellotharmeyerite! Ca(Ni,Fe,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m
	VII/C.31-10 Ferrilotharmeyerite Ca(Zn,Cu)(Fe,Zn)(AsO4)2(OH,H2O)2 C 2/m 2/m
	VII/C.31-20 Lotharmeyerite CaZnMn(AsO3OH)4(OH)3 C 2/m,C 2,Cm Mono
	VII/C.31-30 Manganlotharmeyerite! Ca(Mn,Mg,)2(AsO4)2(OH,H2O)2 C 2/m 2/m
	VII/C.31-35 Cobaltlotharmeyerite! Ca(Co,Fe,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m
	VII/C.31-36 Cobalttsumcorite! Pb(Co,Fe)2(AsO4)2(OH,H2O)2 C 2/m 2/m
	VII/C.31-40 Thometzekite Pb(Cu,Zn)2(AsO4)2·2(H2O) C 2/m 2/m
	VII/C.31-50 Tsumcorite PbZnFe(AsO4)2·(H2O) C 2/m 2/m
	VII/C.31-74 Krettnichite! PbMn2(VO4)2(OH)2 C 2/m 2/m
	VII/C.31-78 Lukrahnite! Ca(Cu,Zn)(Fe,Zn)(AsO4)2(OH,H2O)2 P1 1
	VII/C.31-80 Phosphogartrellite! PbCuFe(PO4)2(OH,H2O)2 P1 1
	VII/C.31-90 Gartrellite Pb(Cu,Fe)2(AsO4,SO4)2(CO3,H2O)0.7 P1,P 1 Tri
	VII/C.31-92 Zincgartrellite! Pb(Zn,Fe,Cu)2(AsO4)2(OH,H2O)2 P1 1
	VII/C.31-98 Rappoldite! Pb(Co,Ni,Zn,)2(AsO4)2·2(H2O) P1 1
	VII/C.31-100 Helmutwinklerite PbZn2(AsO4)2·2(H2O) P1 1
Other Ferrilotharmeyerite Information
References:	NAME( AntBidBlaNic4) PHYS. PROP.(37th List of New Min.,Min. Mag.,1996) OPTIC PROP.(AntBidBlaNic4)
See Also:	Links to other databases for Ferrilotharmeyerite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 - WWW-MINCRYST 12 -École des Mines de Paris Search for Ferrilotharmeyerite using:   Web webmineral.com [ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO] Visit our Advertisers for Ferrilotharmeyerite : 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 Ferrilotharmeyerite Mineral Data : Ask about Ferrilotharmeyerite 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 Ferrilotharmeyerite Specimen Label here : Ferrilotharmeyerite Ca(Zn,Cu++)(Fe+++,Zn)(AsO4)2(OH,H2O)2 Dana No: 37.1.6.2 Strunz No: VII/C.31-10 Locality:   Notes: